WO2015192289A1 - 基于可变电容的天线调节方法及相关装置 - Google Patents

基于可变电容的天线调节方法及相关装置 Download PDF

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Publication number
WO2015192289A1
WO2015192289A1 PCT/CN2014/079931 CN2014079931W WO2015192289A1 WO 2015192289 A1 WO2015192289 A1 WO 2015192289A1 CN 2014079931 W CN2014079931 W CN 2014079931W WO 2015192289 A1 WO2015192289 A1 WO 2015192289A1
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WIPO (PCT)
Prior art keywords
capacitance value
signal strength
threshold
antenna
capacitance
Prior art date
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Ceased
Application number
PCT/CN2014/079931
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English (en)
French (fr)
Inventor
许浩维
黄建仁
李建铭
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP14895204.7A priority Critical patent/EP3142189B1/en
Priority to JP2016570025A priority patent/JP6305570B2/ja
Priority to PCT/CN2014/079931 priority patent/WO2015192289A1/zh
Priority to CN201480012019.6A priority patent/CN105518936B/zh
Priority to US15/318,624 priority patent/US10199727B2/en
Priority to KR1020167035784A priority patent/KR101835260B1/ko
Publication of WO2015192289A1 publication Critical patent/WO2015192289A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/16Circuits
    • H04B1/18Input circuits, e.g. for coupling to an antenna or a transmission line
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/22Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation in accordance with variation of frequency of radiated wave
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/25Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/321Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/15Setup of multiple wireless link connections
    • H04W76/16Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer

Definitions

  • GSM Global System for Mobi le communication
  • TDMA Time Divided Multiple Access
  • CDMA Code Division Multiple Access
  • LTE Long Term Evolution
  • Different communication systems have different working frequency bands.
  • the antenna of the mobile terminal is required to cover a wider operating frequency band in order to meet the communication quality requirements of different communication systems.
  • the antenna applied to the mobile terminal is usually provided with a variable capacitor, and the different capacitance values of the variable capacitor correspond to different operating bands of the antenna; by adjusting the capacitance value of the variable capacitor, It can realize the adjustment of the working frequency band of the antenna, realize the expansion of the working frequency band of the antenna, adapt to different communication systems, and ensure the communication quality.
  • the adjustment method of the existing antenna with variable capacitance is generally: setting the priority of one of the plurality of systems supported by the antenna to the highest priority, and determining the capacitance corresponding to the working frequency band of the communication system with the highest priority And adjusting the capacitance value of the variable capacitor in the antenna to the capacitance value determined above, that is, adjusting the operating frequency band of the antenna according to the operating frequency band of the communication system with the highest priority.
  • the capacitance value of the variable capacitor is adjusted to the capacitance value corresponding to the working frequency band of the GSM system.
  • the capacitance value is adjusted to the capacitance value corresponding to GSM 850 MHz regardless of the operating frequency band of the LTE system, thereby ensuring the optimal communication quality of the GSM system for realizing voice services.
  • the communication quality of the LTE system that implements data services will be poor. It can be seen that the above adjustment method can only guarantee the communication quality of the system with the highest priority, and cannot balance the communication quality of other low priority systems supported by the antenna, so that it cannot be applied to the low priority at the same time. The communication quality of the system is also required.
  • an antenna adjustment method based on a variable capacitor is provided, which is applied to an antenna with a variable capacitance, and the antenna with variable capacitance supports At least two communication systems; the antenna adjustment method includes: detecting a first signal strength of the first communication system supported by the antenna having a variable capacitance; determining whether the first signal strength satisfies a first release condition; The first release condition includes: the first signal strength is greater than the first threshold, or the first signal strength is not less than the first threshold; when the first signal strength meets the first release condition, The capacitance value of the variable capacitor is adjusted to a preset capacitance value; wherein the preset capacitance value is between the
  • the antenna adjustment method further includes: when the first signal strength does not meet the first release condition, The capacitance value is adjusted to the first capacitance value.
  • the antenna adjustment method further includes: determining, when the first signal strength does not meet the first release condition, determining the first signal strength Whether the first recovery condition is met; when the first signal strength satisfies the first recovery condition, the capacitance value of the variable capacitor is adjusted to the first capacitance value; wherein the first recovery condition includes The first signal strength is less than the first recovery threshold, or the first signal strength is not greater than the first recovery threshold; the first recovery threshold is less than the first threshold.
  • the capacitor of the variable capacitor Adjusting the value to the preset capacitance value, comprising: determining whether the first signal strength meets a second release condition; and adjusting a capacitance value of the variable capacitor when the first signal strength satisfies the second release condition To the place
  • the second threshold value includes: the first signal strength is greater than a second threshold, or the first signal strength is not less than the second threshold; the second threshold is greater than The first threshold is stated.
  • the antenna adjustment method further includes: when the first signal strength does not meet the second release condition, Adjusting the capacitance value of the variable capacitor to a first preset capacitor value; wherein the preset capacitor value includes the first preset capacitor value, and the first preset capacitor value is between the first Between a capacitance value and a second capacitance value; or, when the first signal strength does not satisfy the second release condition, determining whether the first signal strength satisfies a second recovery condition; when the first signal When the intensity meets the second recovery condition, the capacitance value of the variable capacitor is adjusted to the first preset capacitance value; wherein the second recovery condition includes: the first signal strength is less than the second recovery The threshold, or the first signal strength is not greater than the second recovery threshold; and the second recovery threshold is between the first threshold and the second threshold.
  • a variable capacitance based antenna adjustment apparatus for an antenna having a variable capacitance, the antenna having a variable capacitance supporting at least two communication systems; the antenna adjustment apparatus comprising: a signal detection unit a first signal strength for detecting the first communication system supported by the antenna having a variable capacitance; a first release determining unit, configured to determine whether the first signal strength meets a first release condition; The releasing condition includes: the first signal strength is greater than the first threshold, or the first signal strength is not less than the first threshold; and the first adjusting unit is configured to: when the first signal strength meets the first When the condition is released, the capacitance value of the variable capacitor is adjusted to a preset capacitance value; wherein the preset capacitance value is between the first capacitance value and the second capacitance value, or is equal to the second a capacitance value; the first capacitance value is a capacitance value corresponding to an operating frequency band of the first communication system; and the second capacitance value is supported by the
  • the antenna adjusting apparatus further includes: a second adjusting unit, configured to: when the first signal strength does not meet the first release condition, The capacitance value of the variable capacitor is adjusted to the first capacitance value.
  • the antenna adjusting apparatus further includes: a first recovery determining unit, configured to: when the first signal strength does not satisfy the first release condition Determining whether the first signal strength meets a first recovery condition; a third adjustment unit, configured to be in the first When the signal strength meets the first recovery condition, the capacitance value of the variable capacitor is adjusted to the first capacitance value; wherein, the first recovery condition includes: the first signal strength is less than a first recovery threshold Or the first signal strength is not greater than the first recovery threshold; the first recovery threshold is less than the first threshold.
  • the first adjusting unit includes: a second release determining unit, configured to determine whether the first signal strength meets a second release condition, and a first sub-adjustment unit, configured to: when the first signal strength meets the second release condition, The capacitance value of the variable capacitor is adjusted to the second capacitor value; wherein, the second release condition includes: the first signal strength is greater than a second threshold, or the first signal strength is not less than the second threshold The second threshold is greater than the first threshold.
  • the first adjusting unit further includes: a second sub-adjusting unit, configured to: When the second release condition is satisfied, the capacitance value of the variable capacitor is adjusted to a first preset capacitance value; wherein the preset capacitance value includes the first preset capacitance value, and the first The preset capacitance value is between the first capacitance value and the second capacitance value; or the second recovery determination unit is configured to determine that the first signal strength does not satisfy the second release condition Whether the first signal strength meets the second recovery condition; the third sub-modulation unit is configured to adjust the capacitance value of the variable capacitor to the first when the first signal strength meets the second recovery condition
  • the second recovery condition includes: the first signal strength is less than a second recovery threshold, or the first signal strength is not greater than a second recovery threshold; the second recovery threshold is Said A threshold and the second threshold between.
  • a wireless communication terminal in a third aspect, includes an antenna having a variable capacitance and an antenna adjuster; the antenna having a variable capacitance supports at least two communication systems; And detecting a first signal strength of the first communication system supported by the antenna with variable capacitance, and adjusting a capacitance value of the variable capacitor to when the first signal strength meets a first release condition
  • the first release condition includes: the first signal strength is greater than the first threshold, or The first signal strength is not less than the first threshold; the preset capacitance value is between the first capacitance value and the second capacitance value, or equal to the second capacitance value; the first capacitance value a capacitance value corresponding to an operating frequency band of the first communication system; the second capacitance value is a capacitance value corresponding to an operating frequency band of the second communication system supported by the antenna having the variable capacitance.
  • the first signal strength of the first communication system with the highest priority supported by the antenna with variable capacitance is detected by the embodiment of the present application, and the first signal strength is strong, so that the first release is satisfied. And adjusting the capacitance value of the variable capacitor to a preset capacitance value, wherein the preset capacitance value is closer to a second capacitance value corresponding to an operating frequency band of the second communication system supported by the antenna, so that The working frequency band of the antenna with variable capacitance is closer to the operating frequency band of the second communication system, thereby improving the communication quality of the second communication system.
  • the first signal strength is attenuated at the same time, the first signal is before the attenuation.
  • the antenna adjustment method provided by the embodiment of the present application not only preferentially satisfies the communication quality of the first communication system with higher priority than the conventional capacitance value corresponding to the operating frequency band of the first communication system. It is required that, when the signal of the first communication system is strong, the communication quality of the second communication system with lower priority is improved by adjusting the capacitance value of the variable capacitor, and the variable capacitance is achieved.
  • the antenna supports the purpose of communication quality of multiple systems.
  • FIG. 1 is a schematic flow chart of a method for adjusting an antenna based on a variable capacitor according to an embodiment of the present application
  • FIG. 2 is a schematic flow chart of another method for adjusting an antenna based on a variable capacitor according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram showing a relationship between a first signal strength and a capacitance value in the antenna adjusting method shown in FIG. 2;
  • FIG. 4 is a schematic flowchart diagram of still another method for adjusting an antenna based on a variable capacitor according to an embodiment of the present disclosure
  • 5 is a schematic diagram showing a relationship between a first signal strength and a capacitance value in the antenna adjustment method shown in FIG. 4;
  • FIG. 6 is a schematic diagram showing a relationship between a first signal strength and a capacitance value in an antenna adjustment method according to another embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an antenna adjusting device based on a variable capacitor according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another antenna adjusting device based on a variable capacitor according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of still another antenna adjusting device based on a variable capacitor according to an embodiment of the present disclosure
  • FIG. 10 is a schematic structural view of another antenna adjusting device based on a variable capacitor according to an embodiment of the present disclosure
  • FIG. 11 is a schematic structural diagram of a wireless communication terminal according to an embodiment of the present disclosure
  • FIG. 12 is a schematic structural diagram of a communication component of FIG. 11
  • FIG. 13 is another schematic structural diagram of the communication component of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Embodiments of the present application provide a method and an apparatus for adjusting an antenna based on a variable capacitor, so as to solve the problem that the conventional antenna adjustment method cannot balance the communication quality and application limitation of multiple systems supported by the antenna.
  • a method for adjusting an antenna based on a variable capacitor includes the following steps. Step:
  • the first release condition may be: the first signal strength is greater than the first threshold, or the first signal strength is not less than the first threshold. .
  • the first signal strength meets the first release condition, adjust a capacitance value of the variable capacitor to a preset capacitance value.
  • the preset capacitance value is between the first capacitance value and the second capacitance value, or is equal to the second capacitance value.
  • the first capacitance value is a capacitance value corresponding to an operating frequency band of the first communication system; and the second capacitance value is a capacitance value corresponding to an operating frequency band of the second communication system supported by the antenna having the variable capacitance.
  • the first communication system has a higher priority than the second communication system.
  • an operating frequency band of an antenna having a variable capacitance may increase as a capacitance value of the variable capacitor increases.
  • the first capacitance value is smaller than the second capacitance value, and the preset capacitance value is greater than the first capacitance value.
  • the preset capacitance value is less than or equal to the second capacitance value; the operating frequency band of the antenna with the variable capacitance may also decrease as the capacitance value of the variable capacitance increases, and the corresponding first capacitance value is greater than the second capacitance value,
  • the preset capacitance value is smaller than the first capacitance value, and the preset capacitance value is greater than or equal to the second capacitance value.
  • the antenna adjustment period ⁇ is set, and the antenna adjustment method is performed once in each antenna adjustment period to implement automatic loop execution of the antenna adjustment method; the smaller the ⁇ is, the more frequently the adjustment of the working frequency band of the antenna can be performed. Good guarantee the communication quality of each communication system.
  • the above antenna with variable capacitance may be any of the following:
  • Antenna based on SGLTE technology generally used for diversity sharing of GSM and LTE systems;
  • Antenna based on voice network and LTE (SVLTE) technology generally used for diversity sharing of CDMA systems and LTE systems;
  • CA Carrier Aggregation
  • the two communication systems supported by the antenna are respectively GSM850 system and LTE B38 system, assuming that the priority of GSM850 system is higher than that of LTE B38 system, the first threshold can be set to _85dBm, that is, as long as the first signal strength of GSM850 system reaches _85dBm, the communication quality requirement of GSM850 system can be met. Therefore, when the first signal strength of the GSM850 system is greater than _85dBm, the capacitance value of the variable capacitor is adjusted to a preset capacitance value.
  • the capacitance value of the variable capacitor can be adjusted.
  • the capacitance value corresponding to the working frequency band of the GSM1800 system makes the working frequency band of the antenna closer to the working frequency band of the LTE system, so that the second signal strength of the LTE system is increased, and the first signal strength of the corresponding GSM850 system is lowered, and the actual measurement result is displayed.
  • the capacitance value of the variable capacitor is the capacitance value corresponding to the working frequency band of the GSM850 system
  • the first signal strength is not attenuated
  • the second signal strength is attenuated by 2 dB
  • the capacitance value of the variable capacitor is the GSM1800 system. 5dB
  • the second signal strength is only attenuated by 0. 5dB; That is, after the adjustment, the second signal strength is increased by 1.5 dB, the communication quality of the LTE system is enhanced, and the first signal strength is attenuated by 13.5 dB, which becomes -83.
  • the capacitance value of the variable capacitor is always maintained at the first capacitance value.
  • the capacitance value of the variable capacitor is adjusted to the preset capacitance value, because the preset is relative to the first capacitance value.
  • the capacitance value is closer to the second capacitance value, such that the operating frequency band of the antenna having the variable capacitance is adjusted to be closer to the operating frequency band of the second communication system, thereby enhancing the second signal strength of the second communication system, and the communication
  • the quality is improved; although the first signal strength is attenuated at the same time (equivalent to releasing a small portion of the signal of the first communication system), since the first signal strength is strong before the attenuation, the first signal strength after the attenuation is still Can meet the communication quality requirements of the first communication system.
  • the antenna adjustment method provided by the embodiment of the present application not only preferentially satisfies the communication quality requirement of the first communication system with higher priority, but also can be adjusted by the adjustment when the signal of the first communication system is strong.
  • the capacitance value of the capacitor is used to improve the communication quality of the second communication system having a lower priority, and the communication quality of the plurality of systems supported by the antenna having the variable capacitance is achieved.
  • the capacitance value of the variable capacitor is adjusted to the first capacitance value.
  • the first signal strength does not satisfy the first release condition, indicating that the signal strength of the first communication system is weak.
  • the capacitance value of the variable capacitor is set to a capacitance value corresponding to the operating frequency band of the first communication system (ie, The first capacitance value) can preferentially satisfy the communication quality requirement of the first communication system with higher priority.
  • the above embodiment can achieve the purpose of achieving the communication quality of a plurality of systems supported by the antenna having the variable capacitance, and is suitable for occasions where the signal strength fluctuation is not large.
  • the capacitance value of the variable capacitor is also at the first capacitance value and the preset capacitance value. Frequent switching (ie, ping-pong effect) causes damage to variable capacitors and reduced lifetime.
  • the embodiment of the present application provides another type of variable capacitor based on FIG. Antenna adjustment method.
  • the antenna adjustment method based on a variable capacitor includes the following steps:
  • step S21 detecting a first signal strength of the first communication system supported by the antenna with variable capacitance; S22, determining whether the first signal strength meets a first release condition, if the first signal strength meets the first In a release condition, step S23 is performed, otherwise step S24 is performed; the first release condition includes: the first signal strength is greater than the first threshold, or the first signal strength is not less than the first threshold.
  • the first capacitance value is a capacitance value corresponding to an operating frequency band of the first communication system
  • the second capacitance value is a capacitance value corresponding to an operating frequency band of the second communication system supported by the antenna having the variable capacitance.
  • the first communication system has a higher priority than the second communication system.
  • an operating frequency band of an antenna having a variable capacitance may increase as a capacitance value of the variable capacitor increases.
  • the first capacitance value is smaller than the second capacitance value, and the preset capacitance value is greater than the first capacitance value.
  • the preset capacitance value is less than or equal to the second capacitance value; the operating frequency band of the antenna with the variable capacitance may also decrease as the capacitance value of the variable capacitance increases, and the corresponding first capacitance value is greater than the second capacitance value,
  • the preset capacitance value is smaller than the first capacitance value, and the preset capacitance value is greater than or equal to the second capacitance value.
  • the first recovery condition includes: The signal strength is less than the first threshold, or the first signal strength is not greater than the first threshold; the first threshold is less than the first threshold.
  • the first recovery threshold may be set according to a communication quality requirement of the first communication system according to an actual situation, and is generally not less than a minimum signal strength required to meet the communication quality requirement of the first communication system; for example, according to an application.
  • the first recovery threshold can be set to -90 dBm : when the first signal strength is less than -90 dBm, the capacitance value is set to the first capacitance value
  • the working frequency band of the antenna is made the same as the working frequency band of the first communication system, and the signal attenuation of the first communication system caused by the inconsistency between the antenna and the operating band of the first communication system can be avoided, thereby ensuring the communication quality of the first communication system.
  • FIG. 3 shows the relationship between the first signal strength and the capacitance value when the operating band of the antenna increases as the capacitance value of the variable capacitor increases. As shown in FIG.
  • the capacitance value of the variable capacitor is adjusted to the preset capacitance value, when the first signal strength is less than the first recovery threshold (Satisfying the first recovery condition), adjusting the capacitance value of the variable capacitor to the first capacitance value; and when the first signal strength is between the first recovery threshold and the first threshold, the capacitance of the variable capacitor The value remains unchanged, and returns to step S21 to re-detect the first signal strength.
  • the following two situations are included: If the first detected first signal strength is greater than the first threshold, the corresponding variable capacitor has a capacitance value preset.
  • the capacitance value when the first detected signal strength decreases to between the first recovery threshold and the first threshold, the variable capacitance is maintained at the preset capacitance value, if the first signal detected last time The intensity is less than the first recovery threshold, and the corresponding capacitance value is the first capacitance value.
  • the variable capacitance is maintained at Said first capacitance value.
  • the difference between the first recovery threshold and the first threshold may be appropriately increased or decreased, and the smaller the difference, the capacitance value is accompanied by the signal.
  • the first recovery threshold can be increased if the first recovery threshold is fixed.
  • the first threshold is to ensure that the signal strength of the first communication system is not attenuated.
  • the first threshold may be appropriately reduced; when the communication quality of the first communication system is very high
  • the first first recovery threshold can be set with the first threshold fixed.
  • the capacitance value of the variable capacitor is adjusted to the preset capacitance value such that the first signal strength is attenuated while the second communication system of the lower priority is second.
  • the signal strength is enhanced to meet the communication quality requirements of the first communication system, and the communication quality of the second communication system can be improved; and the capacitance of the variable capacitor is used only when the first signal strength is attenuated to satisfy the first recovery condition Adjusting the value to the first capacitance value such that the first signal strength is enhanced to ensure communication quality of the first communication system; when the first signal strength does not satisfy the first recovery condition or the first release condition, the variable The capacitance value of the capacitor remains unchanged.
  • FIG. 4 is a flowchart of still another method for adjusting an antenna based on a variable capacitor according to an embodiment of the present disclosure, where the variable capacitor is disposed on the antenna, used to adjust an operating frequency band of the antenna, and the antenna supports At least two communication systems.
  • FIG. 5 is a schematic diagram showing the relationship between the first signal strength and the capacitance value of the variable capacitor in the antenna adjustment method shown in FIG. 4 when the operating band of the antenna increases as the capacitance of the variable capacitor increases.
  • the antenna adjustment method includes the following steps:
  • S31 detecting a first signal strength of the first communication system supported by the antenna with variable capacitance; S32, determining whether the first signal strength meets a first release condition, if the first signal strength satisfies a first release If the condition is not the same as the first threshold, the first signal strength is not greater than the first threshold.
  • step S34 Determine whether the first signal strength meets a second release condition, if the first signal strength meets the second release condition, perform step S34, otherwise perform step S35; wherein, the second release condition includes: The first signal strength is greater than the second threshold, or the first signal strength is not less than the second threshold; and the second threshold is greater than the first threshold.
  • step S31 Adjust a capacitance value of the variable capacitor to a second capacitance value, and return to step S31.
  • the second capacitance value corresponds to an operating frequency band of the second communication system supported by the antenna with variable capacitance.
  • the value of the capacitor The first communication system has a higher priority than the second communication system.
  • step S36 Determine whether the first signal strength meets a second recovery condition, if the first signal strength meets the second recovery condition, perform step S36, otherwise return to step S31; wherein, the second recovery condition includes: The first signal strength is less than the second recovery threshold, or The first signal strength is not greater than a second recovery threshold; and the second recovery threshold is between the first threshold and the second threshold.
  • the second recovery threshold may be set to a minimum value of the first signal strength that optimizes the communication quality of the second communication system on the premise that the communication quality requirement of the first communication system is met.
  • the first preset capacitor value is greater than the first capacitor value, and the first preset capacitor value is less than
  • the second capacitance value is: the first capacitance value is a capacitance value corresponding to an operating frequency band of the first communication system.
  • the first recovery condition includes: The first signal strength is less than the first recovery threshold, or the first signal strength is not greater than the first recovery threshold; the first recovery threshold is less than the first threshold.
  • the first recovery threshold may be set according to a communication quality requirement of the first communication system according to an actual situation, and is generally not less than a minimum signal strength required to meet the communication quality requirement of the first communication system.
  • a capacitance value of the variable capacitor is adjusted according to the signal strength of the first communication system;
  • the relationship between the first signal strength and the capacitance value can be divided into the following five cases. Case 1: When the first signal strength is less than the first recovery threshold, that is, in the first interval (meeting the first recovery condition), the signal strength of the first communication system is weak, and even the communication quality requirement cannot be met.
  • adjusting the capacitance value of the variable capacitor to the first capacitor value ensures that the communication quality of the first communication system with higher priority reaches the optimal in the present case, and the communication quality of the corresponding second communication system. Poor.
  • Case 2 When the first signal strength is between the first threshold and the second recovery threshold, that is, in the third interval (while satisfying the first release condition and the second recovery condition), the signal strength of the first communication system is Under the premise of satisfying the communication quality requirements of the user, there is a certain signal margin (ie, the difference between the first signal strength and the first threshold), and the signal margin can be released for use in the second communication system;
  • Embodiments adjust a capacitance value to a preset capacitance value between the first capacitance value and the second capacitance value such that an operating frequency band of the antenna is located between an operating frequency band of the first communication system and an operating frequency band of the second communication system, The signal margin of the first communication system is released to enhance the signal of the second communication system, thereby improving the communication quality of the second communication system
  • Case 3 When the first signal strength is greater than the second threshold, that is, in the fifth interval (satisfying the second release condition), the signal of the first communication system is strong, not only can meet the communication quality requirements of itself, but also The signal margin, therefore, the embodiment adjusts the capacitance value to the second capacitance value, so that the communication quality of the second communication system is optimized.
  • the signal residual is The amount is large, so the communication quality requirement of the first communication system can also be ensured after the attenuation.
  • Case 4 When the first signal strength is between the first recovery threshold and the first threshold, that is, in the second interval, the capacitance value is unchanged; that is: if the first signal strength is enhanced from the first interval to the second interval, Then, the capacitance value is maintained at a first capacitance value corresponding to the first interval. If the first signal strength is attenuated from the third interval to the second interval, the capacitance value is maintained at a first preset capacitance value corresponding to the third interval.
  • Case 5 When the first signal strength is between the second recovery threshold and the second threshold, that is, in the fourth interval, the capacitance value does not change; that is: if the first signal strength has a third interval increase or decrease to the fourth interval The capacitance value is maintained at a preset capacitance value corresponding to the third interval. If the first signal strength is attenuated from the fifth interval to the fourth interval, the capacitance value is maintained at the second capacitance value corresponding to the fifth interval.
  • the embodiment of the present application divides the signal strength into five intervals, the first interval, the third interval, and the fifth interval, by setting a first recovery threshold, a first threshold, a second recovery threshold, and a second threshold.
  • the capacitance value of the variable capacitor is set to the corresponding capacitance value of the interval. If it is located in the second interval or the fourth interval, the capacitance value is not adjusted; not only the multiple systems supported by the antenna with the variable capacitance are realized.
  • the purpose of the communication quality is to avoid the "ping-pong effect" of the capacitance value of the variable capacitor, reduce the number of adjustments of the variable capacitor, and reduce the damage to the variable capacitor.
  • one or more thresholds may be set between the first threshold and the second recovery threshold, and the third interval is divided into multiple sub-intervals, and a corresponding preset capacitance value is set.
  • the overall communication quality of a plurality of communication systems having antennas with variable capacitance is optimized. Still taking the working frequency band of the antenna as the capacitance value of the variable capacitor increases, as shown in FIG. 6, a third recovery threshold and a third threshold may be set between the first threshold and the second recovery threshold, wherein The third recovery threshold is less than the third threshold.
  • the capacitance value of the variable capacitor in the antenna is set to a first capacitance corresponding to the operating frequency band of the first communication system. a value, when the first signal strength is between the first threshold and the third recovery threshold, setting a capacitance value of the variable capacitor to a first preset capacitance value, when the first signal strength is between When the third threshold is between the second threshold and the second threshold The capacitance value of the variable capacitor is set to a second preset capacitance. When the first signal strength is greater than the second threshold, the capacitance value of the variable capacitor is set to a second capacitance value, when the first signal strength is introduced.
  • the capacitance value of the variable capacitor is not changed between the first recovery threshold and the first threshold, or between the third recovery threshold and the third threshold, or between the second recovery threshold and the second threshold;
  • the first preset capacitance value is between the first capacitance value and the second preset capacitance value
  • the second preset capacitance value is between the first preset capacitance value and the second capacitance value.
  • the embodiment of the present application further provides an antenna adjusting device based on a variable capacitor; the variable capacitance-based antenna adjusting device is applied to an antenna having a variable capacitor, which may be integrated in whole or in part.
  • the antenna can also be disposed independently of each other in the wireless communication terminal; the antenna with variable capacitance supports at least two communication systems; as shown in FIG.
  • the variable capacitance-based antenna adjustment device 700 includes the following unit a signal detecting unit 710, configured to detect a first signal strength of the first communication system supported by the antenna with variable capacitance; a first release determining unit 720, configured to determine whether the first signal strength meets a first release
  • the first release condition includes: the first signal strength is greater than the first threshold, or the first signal strength is not less than the first threshold; the first adjustment unit 730 is configured to be in the first When the signal strength satisfies the first release condition, the capacitance value of the variable capacitor is adjusted to a preset capacitance value.
  • the preset capacitance value is between the first capacitance value and the second capacitance value, or equal to the second capacitance value; the first capacitance value is corresponding to the working frequency band of the first communication system.
  • the capacitance value; the second capacitance value is a capacitance value corresponding to an operating frequency band of the second communication system supported by the antenna having the variable capacitance.
  • the capacitance value of the variable capacitor is always maintained at the first capacitance value, and the working frequency band of the antenna with variable capacitance is closer to the working frequency band of the second communication system, thereby making the first
  • the communication quality of the second communication system is improved.
  • the antenna adjusting apparatus provided in the embodiment of the present application can ensure the communication quality of the first communication system with higher priority, and can adjust the variable capacitance when the signal of the first communication system is strong.
  • the antenna adjusting apparatus 700 may further include: a second adjusting unit, configured to: when the first signal strength does not satisfy the first release condition, the capacitance value of the variable capacitor Adjusted to the first capacitance value.
  • the antenna adjusting apparatus 700 may further include: a first recycling determining unit 741, configured to: when the first signal strength does not satisfy the first release condition, Determining whether the first signal strength meets the first recovery condition; the third adjusting unit 742 is configured to adjust the capacitance value of the variable capacitor to the first signal strength when the first signal strength meets the first recovery condition
  • the first capacitance value is described.
  • the first recovery condition includes: the first signal strength is less than the first recovery threshold, or the first signal strength is not greater than the first recovery threshold; and the first recovery threshold is less than the first threshold.
  • the capacitance value of the variable capacitor is not adjusted, that is, if the first signal strength detected last time is greater than the first threshold, and the capacitance value of the corresponding variable capacitor is a preset capacitance value, the first detected in this time.
  • the corresponding capacitance value is The first capacitance value maintains the variable capacitance at the first capacitance value when it is detected that the first signal strength rises to between the first recovery threshold and the first threshold.
  • the first adjusting unit 730 includes: a second release determining unit 731, configured to determine whether the first signal strength meets a second release condition;
  • the second release condition includes: the first signal strength is greater than the second threshold, or the first signal strength is not less than the second threshold; the second threshold is greater than the first threshold;
  • the first sub-adjusting unit 732 is configured to adjust the capacitance value of the variable capacitor to the second capacitance value when the first signal strength satisfies the second release condition.
  • the first adjusting unit 730 may further include: a second sub-adjusting unit, configured to adjust a capacitance value of the variable capacitor to a first preset capacitance value; The preset capacitance value is between the first capacitance value and the second capacitance value.
  • the first adjusting unit 730 may further include: a second recycling determining unit 733, when the first signal strength does not satisfy the second release condition, Determining whether the first signal strength meets a second recovery condition; the third sub-adjusting unit 734 is configured to adjust a capacitance value of the variable capacitor to the first signal strength when the first signal strength satisfies a second recovery condition a first preset capacitance value, wherein the second recovery condition includes: the first signal strength is less than a second recovery threshold, or the first signal strength is not greater than a second recovery threshold; Between the first threshold and the second threshold.
  • the embodiment of the present application divides the signal strength into five intervals, the first interval, the third interval, and the fifth interval, by setting a first recovery threshold, a first threshold, a second recovery threshold, and a second threshold.
  • a first recovery threshold a first threshold
  • a second recovery threshold a second threshold
  • the capacitance value of the variable capacitor is set to the corresponding capacitance value of the interval. If it is located in the second interval or the fourth interval, the capacitance value is not adjusted; not only the multiple systems supported by the antenna with the variable capacitance are realized.
  • FIG. 11 is a structural block diagram of a wireless communication terminal 800 according to an embodiment of the present disclosure; the wireless communication terminal 800 may be a mobile phone, a tablet device, a notebook computer, or the like. Referring to FIG.
  • the wireless communication terminal 800 may include one or more of the following Components: processing component 810, memory 820, communication component 830, power component 840, sensor component 850, input/output (I/O) interface 860, multimedia component 870, and audio component 880.
  • processing component 810 typically controls the overall operation of the wireless communication terminal, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • processing component 810 can include one or more processors 811 to execute local or remote instructions. Additionally, processing component 810 can include one or more modules to facilitate interaction between component 810 and other components.
  • Memory 820 is configured to store various types of data to support operation on the wireless communication terminal.
  • the memory 820 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPR0M), Programmable Read Only Memory (PR0M), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPR0M erasable Programmable Read Only Memory
  • PR0M Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk or Optical Disk.
  • Power component 840 provides power to various components of the wireless communication terminal.
  • Sensor assembly 850 includes one or more sensors for providing status assessments of various aspects to the wireless communication terminal.
  • the input/output component 860 provides an interface between the processing component 810 and the peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons can include, but are not limited to: Home button, Volume button, Start button, and Lock button.
  • the multimedia component 870 includes a screen of an output interface provided between the wireless communication terminal and the user.
  • the screen can include a liquid crystal display (LCD) and a touch panel (TP).
  • the multimedia component 870 can also include a front camera and/or a rear camera.
  • the audio component 880 is configured to output and/or input an audio signal.
  • audio component 880 includes a microphone (MIC), a speaker, and the like.
  • Communication component 830 is configured to facilitate wired or wireless communication between the wireless communication terminal and other devices.
  • the wireless communication terminal can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof. Referring to FIG.
  • the communication component 830 includes an antenna 831 having a variable capacitance and an antenna adjuster 832, and may further include at least one of a transmitting circuit and a receiving circuit (not shown).
  • the antenna 831 having a variable capacitance includes an antenna element 8311 and a variable capacitor 8312 connected between the antenna element 8311 and the ground potential GND; the variable capacitor
  • the antenna 831 supports at least two communication systems, wherein the first communication system has the highest priority, i.e., preferentially meets the communication quality requirements of the first communication system.
  • the antenna adjuster 832 is for adjusting the capacitance value of the variable capacitor 8312, thereby realizing the adjustment of the operating frequency of the antenna 831 having the variable capacitance; the antenna adjuster 832 includes the signal detecting device 8321 and the capacitance adjusting device 8322; and the signal detecting device 8321 And a capacitance adjusting device 8322 is respectively connected to the processor 811 in the processing component 810; the signal detecting device 8321 is configured to detect the first signal strength of the first communication system received by the antenna 831 having the variable capacitance, and send it to the processing
  • the processor 81 1 executes the instruction stored in the memory 820 according to the detection result (ie, the first signal strength) output by the signal detecting device 8321, generates corresponding driving signaling, and sends it to the capacitance adjusting device 8322, the capacitance adjusting device.
  • 8322 adjusts the capacitance value of the variable capacitor 8312 according to the driving command to implement the antenna adjustment method, so
  • the signal detecting device 8321 includes a signal amplifier, an adjustable attenuator, a radio frequency transformer, and a power voltage conversion circuit; the working principle is that the signal amplifier amplifies the collected signal (for subsequent processing), The amplified signal is controlled within a certain range by the adjustable attenuator, and the attenuated signal is converted into a differential input signal after passing through the RF transformer, and the power voltage conversion circuit converts the differential input signal into a corresponding DC level output to the processor 81. 1 (The DC level is linear with the signal strength), and the processor can later convert the DC level to a digital signal through a built-in analog-to-digital conversion module for comparison with each threshold.
  • the variable capacitor 8312 can be connected to the lower ground path of the component 8311, as shown in FIG. 12, or can be connected to the feeding end of the component 8311, as shown in FIG. Show.
  • the capacitance adjusting device 8322 may be a current driving circuit, a voltage driving circuit, or the like, and the capacitance value of the variable capacitor 8312 is adjusted by outputting a driving signal corresponding to the capacitance value to the variable capacitor 8312; for example, the current driving circuit may be a variable capacitor 8312 Outputs a current drive signal corresponding to the capacitance value, and the voltage drive circuit can output a voltage drive signal corresponding to the capacitance value to the variable capacitor 8312.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
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Abstract

一种基于可变电容的天线调节方法及相关装置,通过检测具有可变电容 (8312) 的天线 (831) 所支持的优先级最高的第一通信系统的第一信号强度 (S11),在所述第一信号强度较强,以至满足第一释放条件时,将所述可变电容的电容值调节至预设电容值 (S13),其中,该预设电容值更接近于该天线所支持的第二通信系统的工作频带对应的第二电容值,使得具有可变电容的天线的工作频带更接近第二通信系统的工作频带,进而使得第二通信系统的通信质量提高,虽然同时第一信号强度有所衰减,但由于衰减前第一信号强度很强,所以衰减后的第一信号强度仍能满足第一通信系统的通信质量要求。因此可以实现兼顾所述具有可变电容的天线所支持的多个系统的通信质量。

Description

基于可变电容的天线调节方法及相关装置
技术领域 本申请涉及通信技术领域,特别是涉及一种基于可变电容的天线调节方法及相关 装置。 背景技术 随着通信技术的发展, 采用不同无线通信技术的通信系统陆续产生, 例如采 用时分多址 (Time Divi sion Multiple Access , TDMA) 技术的全球移动通信系 统 ( Global System for Mobi le communication , GSM)、 采用码分多址 (Code Division Multiple Access, CDMA)技术的语音通信系统、采用长期演进(Long Term Evolution, LTE ) 技术的数据通信系统等。 不同通信系统对应的工作频带不同, 为了使移动终端能够支持不同的通信系统, 要求移动终端的天线能够覆盖较宽的 工作频带, 以便满足不同通信系统的通信质量要求。 为扩展移动终端天线的工作频带, 应用于移动终端的天线中通常设置有可变 电容, 该可变电容的不同电容值, 对应天线的不同工作频带; 通过调节该可变电 容的电容值大小, 可以实现对天线工作频带的调节, 实现了对天线工作频带的扩 展, 可以适应不同的通信系统, 保证通信质量。 现有具有可变电容的天线的调节 方法通常为, 设置该天线所支持的多种系统中的一种系统的优先级为最高优先 级, 确定该优先级最高的通信系统的工作频带对应的电容值, 并将天线中可变电 容的电容值调节至上述确定的电容值, 即根据该优先级最高的通信系统的工作频 带调节天线的工作频带。以采用 GSM和 LTE同步支持(simultaneous GSM and LTE, SGLTE ) 技术的天线为例, 若设置 GSM系统的优先级最高, 则调节所述可变电容 的电容值至 GSM系统的工作频带对应的电容值, 如当 GSM系统的工作频带为 GSM 850MHz 时, 无论 LTE系统的工作频带如何, 均将所述电容值调节至 GSM 850MHz 对应的电容值, 从而可以保证实现语音业务的 GSM系统的通信质量最优, 但实现 数据业务的 LTE系统的通信质量会很差。 可见, 上述调节方法只能保证具有最高优先级的系统的通信质量, 无法兼顾 天线所支持的其他低优先级系统的通信质量, 从而无法同时适用于对所述低优先 级系统的通信质量也有一定要求的场合。 发明内容 本申请实施例中提供了一种基于可变电容的天线调节方法及相关装置, 以解 决常用的天线调节方法无法兼顾天线所支持的多个系统的通信质量、 应用场合受 限问题。 为了解决上述技术问题, 本申请实施例公开了如下技术方案: 第一方面, 提供一种基于可变电容的天线调节方法, 应用于具有可变电容的 天线,所述具有可变电容的天线支持至少两种通信系统;所述天线调节方法包括: 检测所述具有可变电容的天线支持的第一通信系统的第一信号强度; 判断所 述第一信号强度是否满足第一释放条件; 所述第一释放条件包括: 所述第一信号 强度大于第一门限, 或者, 所述第一信号强度不小于所述第一门限; 当所述第一 信号强度满足所述第一释放条件时, 将所述可变电容的电容值调节至预设电容 值; 其中, 所述预设电容值介于所述第一电容值和第二电容值之间, 或者等于所 述第二电容值; 所述第一电容值为所述第一通信系统的工作频带对应的电容值; 所述第二电容值为所述具有可变电容的天线支持的第二通信系统的工作频带对 应的电容值。 结合第一方面, 在第一方面第一种可能的实现方式中, 所述天线调节方法还 包括: 当所述第一信号强度不满足所述第一释放条件时, 将所述可变电容的电容 值调节至所述第一电容值。 结合第一方面, 在第一方面第二种可能的实现方式中, 所述天线调节方法还 包括: 当所述第一信号强度不满足所述第一释放条件时, 判断所述第一信号强度 是否满足第一回收条件; 当所述第一信号强度满足所述第一回收条件时, 将所述 可变电容的电容值调整至所述第一电容值; 其中, 所述第一回收条件包括: 所述 第一信号强度小于第一回收门限, 或者, 所述第一信号强度不大于所述第一回收 门限; 所述第一回收门限小于第一门限。 结合第一方面, 或者第一方面第一种可能的实现方式, 或者第一方面第二种 可能的实现方式, 在第一方面第三种可能的实现方式中, 将所述可变电容的电容 值调节至预设电容值, 包括: 判断所述第一信号强度是否满足第二释放条件; 当 所述第一信号强度满足所述第二释放条件时, 将所述可变电容的电容值调整至所 述第二电容值; 其中, 所述第二释放条件包括: 所述第一信号强度大于第二门限, 或者,所述第一信号强度不小于所述第二门限;所述第二门限大于所述第一门限。 结合第一方面第三种可能的实现方式, 在第一方面第四种可能的实现方式 中, 所述天线调节方法还包括: 当所述第一信号强度不满足所述第二释放条件时, 将所述可变电容的电容值 调整至第一预设电容值; 其中, 所述预设电容值包括所述第一预设电容值, 且所 述第一预设电容值介于所述第一电容值和第二电容值之间; 或者, 当所述第一信号强度不满足所述第二释放条件时, 判断所述第一信号 强度是否满足第二回收条件; 当所述第一信号强度满足所述第二回收条件时, 将 所述可变电容的电容值调整至所述第一预设电容值; 其中, 所述第二回收条件包 括: 所述第一信号强度小于第二回收门限, 或者, 所述第一信号强度不大于第二 回收门限; 所述第二回收门限介于所述第一门限和第二门限之间。 第二方面, 提供一种基于可变电容的天线调节装置, 应用于具有可变电容的 天线,所述具有可变电容的天线支持至少两种通信系统;所述天线调节装置包括: 信号检测单元, 用于检测所述具有可变电容的天线支持的第一通信系统的第 一信号强度; 第一释放判断单元, 用于判断所述第一信号强度是否满足第一释放 条件; 所述第一释放条件包括: 所述第一信号强度大于第一门限, 或者, 所述第 一信号强度不小于所述第一门限; 第一调节单元, 用于在所述第一信号强度满足 所述第一释放条件时, 将所述可变电容的电容值调节至预设电容值; 其中, 所述预设电容值介于所述第一电容值和第二电容值之间, 或者等于所 述第二电容值; 所述第一电容值为所述第一通信系统的工作频带对应的电容值; 所述第二电容值为所述具有可变电容的天线支持的第二通信系统的工作频带对 应的电容值。 结合第二方面, 在第二方面第一种可能的实现方式中, 所述天线调节装置还 包括: 第二调节单元, 用于在所述第一信号强度不满足所述第一释放条件时, 将 所述可变电容的电容值调节至所述第一电容值。 结合第二方面, 在第二方面第二种可能的实现方式中, 所述天线调节装置还 包括:第一回收判断单元,用于在所述第一信号强度不满足所述第一释放条件时, 判断所述第一信号强度是否满足第一回收条件; 第三调节单元, 用于在所述第一 信号强度满足所述第一回收条件时, 将所述可变电容的电容值调整至所述第一电 容值; 其中, 所述第一回收条件包括: 所述第一信号强度小于第一回收门限, 或 者, 所述第一信号强度不大于所述第一回收门限; 所述第一回收门限小于第一门 限。 结合第二方面, 或者第二方面第一种可能的实现方式, 或者第二方面第二种 可能的实现方式,在第二方面第三种可能的实现方式中,所述第一调节单元包括: 第二释放判断单元, 用于判断所述第一信号强度是否满足第二释放条件; 第一子 调节单元, 用于在所述第一信号强度满足所述第二释放条件时, 将所述可变电容 的电容值调整至所述第二电容值; 其中, 所述第二释放条件包括: 所述第一信号 强度大于第二门限, 或者, 所述第一信号强度不小于所述第二门限; 所述第二门 限大于所述第一门限。 结合第二方面第三种可能的实现方式, 在第二方面第四种可能的实现方式 中, 所述第一调节单元还包括: 第二子调节单元, 用于在所述第一信号强度不满足所述第二释放条件时, 将 所述可变电容的电容值调整至第一预设电容值; 其中, 所述预设电容值包括所述 第一预设电容值, 且所述第一预设电容值介于所述第一电容值和第二电容值之 间; 或者, 第二回收判断单元, 用于在所述第一信号强度不满足所述第二释放条 件时, 判断所述第一信号强度是否满足第二回收条件; 第三子调节单元, 用于在 所述第一信号强度满足所述第二回收条件时, 将所述可变电容的电容值调整至所 述第一预设电容值; 其中, 所述第二回收条件包括: 所述第一信号强度小于第二 回收门限, 或者, 所述第一信号强度不大于第二回收门限; 所述第二回收门限介 于所述第一门限和第二门限之间。 第三方面, 提供一种无线通信终端, 所述无线通信终端包括具有可变电容的 天线和天线调节器; 所述具有可变电容的天线支持至少两种通信系统; 所述天线调节器, 用于检测所述具有可变电容的天线所支持的第一通信系统 的第一信号强度, 并在所述第一信号强度度满足第一释放条件时, 将所述可变电 容的电容值调节至预设电容值; 其中, 所述第一释放条件包括: 所述第一信号强度大于第一门限, 或者, 所 述第一信号强度不小于所述第一门限; 所述预设电容值介于所述第一电容值和第 二电容值之间, 或者等于所述第二电容值; 所述第一电容值为所述第一通信系统 的工作频带对应的电容值; 所述第二电容值为所述具有可变电容的天线支持的第 二通信系统的工作频带对应的电容值。 由以上技术方案可见, 本申请实施例通过检测具有可变电容的天线所支持的 优先级最高的第一通信系统的第一信号强度, 在所述第一信号强度较强, 以至满 足第一释放条件时, 将所述可变电容的电容值调节至预设电容值, 其中, 该预设 电容值更接近于该天线所支持的第二通信系统的工作频带对应的第二电容值, 使 得所述具有可变电容的天线的工作频带更接近第二通信系统的工作频带, 进而使 得第二通信系统的通信质量提高, 虽然同时第一信号强度有所衰减, 但由于衰减 前所述第一信号强度很强, 所以衰减后的第一信号强度仍能满足第一通信系统的 通信质量要求。 因此, 相对于传统的将电容值始终设置在第一通信系统的工作频 带对应的电容值, 本申请实施例提供的天线调节方法, 既优先满足了优先级较高 的第一通信系统的通信质量要求, 又可以在所述第一通信系统的信号很强时, 通 过调节可变电容的电容值, 来提高优先级较低的第二通信系统的通信质量, 达到 了兼顾所述具有可变电容的天线所支持的多个系统的通信质量的目的。 附图说明 为了更清楚地说明本申请实施例或现有技术中的技术方案, 下面将对实施例 或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 对于本领域普 通技术人员而言, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其 他的附图。
图 1 为本申请实施例提供的一种基于可变电容的天线调节方法的流程示意 图;
图 2为本申请实施例提供的另一种基于可变电容的天线调节方法的流程示意 图; 图 3为图 2所示天线调节方法中第一信号强度和电容值之间的变化关系示意 图;
图 4为本申请实施例提供的又一种基于可变电容的天线调节方法的流程示意 图; 图 5为图 4所示天线调节方法中第一信号强度和电容值之间的变化关系示意 图;
图 6为本申请另一实施例提供的天线调节方法中第一信号强度和电容值之间 的变化关系示意图;
图 7 为本申请实施例提供的一种基于可变电容的天线调节装置的结构示意 图;
图 8为本申请实施例提供的另一种基于可变电容的天线调节装置的结构示意 图;
图 9为本申请实施例提供的又一种基于可变电容的天线调节装置的结构示意 图; 图 10 为本申请实施例提供的又一种基于可变电容的天线调节装置的结构示 意图;
图 11为本申请实施例提供的一种无线通信终端的结构示意图; 图 12为图 11中通信组件的一种结构示意图; 图 13为图 11中通信组件的另一种结构示意图。 具体实施方式 本申请实施例提供一种基于可变电容的天线调节方法及相关装置, 以解决常 用的天线调节方法无法兼顾天线所支持的多个系统的通信质量、 应用场合受限问 题。 为了使本技术领域的人员更好地理解本申请实施例中的技术方案, 并使本申 请实施例的上述目的、 特征和优点能够更加明显易懂, 下面结合附图对本申请实 施例中技术方案作进一步详细的说明。
图 1 为本申请实施例提供的一种基于可变电容的天线调节方法的流程示意 图, 该天线调节方法应用于具有可变电容的天线, 所述具有可变电容的天线支持 至少两种通信系统。 实际应用中, 执行该天线调节方法的装置可以全部或部分集 成于天线中, 也可以与天线彼此独立设置于无线通信终端中。 参照图 1, 本申请实施例提供的基于可变电容的天线调节方法, 包括如下步 骤:
511、 检测所述具有可变电容的天线支持的第一通信系统的第一信号强度;
512、 判断所述第一信号强度是否满足第一释放条件; 上述第一释放条件可以为: 所述第一信号强度大于第一门限, 或者, 所述第 一信号强度不小于所述第一门限。
513、 当所述第一信号强度满足所述第一释放条件时, 将所述可变电容的电 容值调节至预设电容值。 其中, 所述预设电容值介于所述第一电容值和第二电容值之间, 或者等于所 述第二电容值。 所述第一电容值为所述第一通信系统的工作频带对应的电容值; 所述第二电容值为所述具有可变电容的天线支持的第二通信系统的工作频带对 应的电容值。 所述第一通信系统的优先级高于第二通信系统。 实际应用中, 具有可变电容的天线的工作频带可以随着可变电容的电容值的 增加而增加, 相应的, 第一电容值小于第二电容值, 预设电容值大于第一电容值, 且预设电容值小于或等于第二电容值; 具有可变电容的天线的工作频带也可以随 着可变电容的电容值的增加而减小, 相应的第一电容值大于第二电容值, 预设电 容值小于第一电容值, 且预设电容值大于或等于第二电容值。
可选的, 设置天线调节周期 τ, 每个天线调节周期 Τ内执行一次上述天线调 节方法, 实现上述天线调节方法的自动循环执行; τ越小, 对天线的工作频带的 调节越频繁, 可以更好的保证各个通信系统的通信质量。 上述具有可变电容的天线可以为以下任意一种:
1 ) 基于 SGLTE技术的天线, 一般用于 GSM和 LTE系统分集共享;
2 ) 基于语音网与 LTE同步支持 (Simultaneous Voice and LTE,SVLTE)技术 的天线, 一般用于 CDMA系统和 LTE系统的分集共享;
3 ) 基于 LTE载波聚合 (Carrier Aggregation, CA) 技术的天线, 一般用于 LTE策略与计费控制 (Pol icy Control and Charging, PCC) 系统及 LTE辅助公 共控制 (Secondary Common Control , SCO 系统的分集共享;
4) 基于双卡技术的天线, 一般用于 GSM和 LTE网络分集共享。 以上述基于 SGLTE 技术的天线为例, 该天线所支持的两种通信系统分别为 GSM850系统和 LTE B38系统, 假设 GSM850系统的优先级高于 LTE B38系统, 第 一门限可以设为 _85dBm, 即只要 GSM850 系统的第一信号强度达到 _85dBm, 即可 满足 GSM850系统的通信质量要求; 故当 GSM850系统的第一信号强度大于 _85dBm 时, 将可变电容的电容值调节至预设电容值, 例如当 GSM850 系统的第一信号强 度为 -70dBm可以将可变电容的电容值调节至 GSM1800 系统的工作频带对应的电 容值, 使得天线的工作频带更接近 LTE系统的工作频带, 从而使 LTE系统的第二 信号强度增加, 相应的 GSM850 系统的第一信号强度降低实际测量结果显示, 调 节前, 即可变电容的电容值为 GSM850 系统的工作频带对应的电容值时, 第一信 号强度无衰减, 第二信号强度衰减 2dB ; 调节后, 即可变电容的电容值为 GSM1800 系统的工作频带对应的电容值后, 第一信号强度衰减 13. 5dB, 第二信号强度只衰 减 0. 5dB ; 即调节后, 第二信号强度增加 1. 5dB, LTE系统的通信质量增强, 第一 信号强度衰减 13. 5dB , 变为 -83. 5dBm, 但仍高于 _85dBm, 仍能满足 GSM850系统 的通信要求。 本申请实施例中, 在所述第一信号强度满足第一释放条件时, 说明此时第一 通信系统的信号强度能满足其通信质量要求; 此时, 相对于现有天线调节方法中 将所述可变电容的电容值始终保持在所述第一电容值, 本申请实施例将所述可变 电容的电容值调节至所述预设电容值, 由于相对于第一电容值, 该预设电容值更 接近于所述第二电容值, 使得调节后所述具有可变电容的天线的工作频带更接近 第二通信系统的工作频带, 进而使得第二通信系统的第二信号强度增强, 通信质 量提高; 虽然同时第一信号强度有所衰减 (相当于将第一通信系统的信号释放一 小部分), 但由于衰减前所述第一信号强度很强, 所以衰减后的第一信号强度仍 能满足第一通信系统的通信质量要求。 因此, 应用本申请实施例提供的天线调节 方法, 既优先满足了优先级较高的第一通信系统的通信质量要求, 又可以在所述 第一通信系统的信号很强时, 通过调节可变电容的电容值, 来提高优先级较低的 第二通信系统的通信质量, 达到了兼顾所述具有可变电容的天线所支持的多个系 统的通信质量的目的。 可选的, 本申请实施例中, 当所述第一信号强度不满足第一释放条件时, 将 所述可变电容的电容值调节至所述第一电容值。 所述第一信号强度不满足第一释放条件, 说明第一通信系统的信号强度较 弱,此时,将可变电容的电容值设置在第一通信系统的工作频带对应的电容值(即 所述第一电容值), 可以优先满足优先级较高的第一通信系统的通信质量要求。 上述实施例可以达到兼顾所述具有可变电容的天线所支持的多个系统的通 信质量的目的, 适用于信号强度波动不大的场合。 在第一信号强度波动较大的情况下, 尤其当第一信号强度在设定的第一门限 附近波动时, 可变电容的电容值也会在所述第一电容值和预设电容值之间频繁切 换 (即乒乓效应), 导致可变电容受损、 使用寿命降低等危害。 为了既能使所述 具有可变电容的天线支持多个通信系统, 又能减少可变电容的电容值调节次数, 本申请实施例提供了图 2所示的另一种基于具有可变电容的天线调节方法。 参照图 2, 该基于具有可变电容的天线调节方法, 包括如下步骤:
S21、 检测所述具有可变电容的天线支持的第一通信系统的第一信号强度; S22、 判断所述第一信号强度是否满足第一释放条件, 如果所述第一信号强 度满足所述第一释放条件, 则执行步骤 S23, 否则执行步骤 S24 ; 所述第一释放条件包括: 所述第一信号强度大于第一门限, 或者, 所述第一 信号强度不小于所述第一门限。
523、 将所述可变电容的电容值调节至预设电容值, 并返回步骤 S21 ; 其中, 所述预设电容值介于所述第一电容值和第二电容值之间, 或者等于所 述第二电容值。 所述第一电容值为所述第一通信系统的工作频带对应的电容值; 所述第二电容值为所述具有可变电容的天线支持的第二通信系统的工作频带对 应的电容值。 所述第一通信系统的优先级高于第二通信系统。 实际应用中, 具有可变电容的天线的工作频带可以随着可变电容的电容值的 增加而增加, 相应的, 第一电容值小于第二电容值, 预设电容值大于第一电容值, 且预设电容值小于或等于第二电容值; 具有可变电容的天线的工作频带也可以随 着可变电容的电容值的增加而减小, 相应的第一电容值大于第二电容值, 预设电 容值小于第一电容值, 且预设电容值大于或等于第二电容值。
524、 判断所述第一信号强度是否满足第一回收条件, 如果所述第一信号强 度满足第一回收条件, 则执行步骤 S25, 否则返回步骤 S21 ; 所述第一回收条件包括: 所述第一信号强度小于第一回收门限, 或者, 所述 第一信号强度不大于所述第一回收门限; 所述第一回收门限小于第一门限。 所述 第一回收门限可以根据实际场合对第一通信系统的通信质量要求设置, 一般不小 于满足第一通信系统的通信质量要求所需的最小信号强度; 例如, 根据某一应用 场合下对第一通信系统的通信质量要求, 当第一通信系统的第一信号强度小于 -lOOdBm时, 第一通信系统的通信质量将受到影响, 此时可变电容的电容值的取 值必须保证第一通信系统的信号无衰减或衰减后仍不小于 -lOOdBm; 可以将第一 回收门限设置为 -90dBm: 当第一信号强度小于 -90dBm时, 将电容值设置为所述第 一电容值, 使得天线的工作频带与第一通信系统的工作频带相同, 可以避免因天 线与第一通信系统的工作频带不一致导致第一通信系统的信号衰减, 从而可以保 证第一通信系统的通信质量。
S25、 将所述可变电容的电容值调整至所述第一电容值, 并返回步骤 S21。 图 3示出了天线的工作频带随可变电容的电容值的增大而增大时第一信号强 度和电容值的变化关系。 如图 3所示: 当第一信号强度大于第一门限 (满足第一 释放条件) 时, 将可变电容的电容值调节至所述预设电容值, 当第一信号强度小 于第一回收门限 (满足第一回收条件) 时, 将可变电容的电容值调节至所述第一 电容值; 而当第一信号强度介于第一回收门限和第一门限之间时, 可变电容的电 容值保持不变, 并返回步骤 S21, 重新检测第一信号强度; 具体包括如下两种情 况: 若上一次检测到的第一信号强度大于第一门限, 对应的可变电容的电容值为 预设电容值, 则在本次检测到的第一信号强度降低至第一回收门限和第一门限之 间时, 将可变电容保持在所述预设电容值, 若上一次检测到的第一信号强度小于 第一回收门限, 对应的电容值为第一电容值, 则在本次检测到第一信号强度升高 至第一回收门限和第一门限之间时, 将可变电容保持在所述第一电容值。 另外, 根据不同场合下对天线所支持的每个系统的通信质量的不同需求, 可 以适当增大或减小第一回收门限和第一门限的差值, 该差值越小, 电容值随信号 强度的变化越灵敏、 对可变电容的损坏也越大; 例如, 当对优先级较低的第二通 信系统的通信质量要求很低时, 在第一回收门限固定的情况下, 可以增大第一门 限, 尽量保证第一通信系统的信号强度不衰减, 反之, 若对第二通信系统的通信 质量有一定要求, 可适当减小第一门限; 当对第一通信系统的通信质量要求很高 时, 可以在第一门限固定的情况下, 设定较大的第一回收门限。 由上述技术方案可知, 本申请实施例通过检测优先级较高的第一通信系统的 第一信号强度, 并分别判断该第一信号强度是否满足第一释放条件和第一回收条 件, 当第一信号强度增强至满足第一释放条件时, 将可变电容的电容值调节至所 述预设电容值, 使得第一信号强度衰减, 同时优先级较低的第二通信系统的第二 信号强度增强, 即可以满足第一通信系统的通信质量要求, 有可以提高第二通信 系统的通信质量; 当且仅当第一信号强度衰减至满足第一回收条件时, 将可变电 容的电容值调节至所述第一电容值, 使得第一信号强度增强, 以保证第一通信系 统的通信质量; 当第一信号强度既不满足第一回收条件也不满足第一释放条件 时, 可变电容的电容值保持不变; 应用本实施例, 不仅可以达到兼顾所述具有可 变电容的天线所支持的多个系统的通信质量的目的, 还可以减少对可变电容的调 节次数, 避免可变电容的电容值出现 "乒乓效应", 降低对可变电容的损害。 图 4为本申请实施例提供的又一种基于可变电容的天线调节方法的流程图, 所述可变电容设置于所述天线上, 用于调节所述天线的工作频带, 且该天线支持 至少两种通信系统。图 5为天线的工作频带随可变电容的电容值的增大而增大时, 图 4所示天线调节方法中第一信号强度与可变电容的电容值之间的变化关系示意 图。
参照图 4和图 5, 该天线调节方法包括如下步骤:
S31、 检测所述具有可变电容的天线支持的第一通信系统的第一信号强度; S32、 判断所述第一信号强度是否满足第一释放条件, 如果所述第一信号强 度满足第一释放条件, 则执行步骤 S33, 否则执行步骤 S37 ; 所述第一释放条件包括: 所述第一信号强度大于第一门限, 或者, 所述第一 信号强度不小于所述第一门限。
533、 判断所述第一信号强度是否满足第二释放条件, 如果所述第一信号强 度满足第二释放条件, 则执行步骤 S34, 否则执行步骤 S35 ; 其中, 所述第二释放条件包括: 所述第一信号强度大于第二门限, 或者, 所 述第一信号强度不小于所述第二门限; 所述第二门限大于第一门限。
534、 将所述可变电容的电容值调节至第二电容值, 并返回步骤 S31 ; 其中, 所述第二电容值为所述具有可变电容的天线支持的第二通信系统的工 作频带对应的电容值。 所述第一通信系统的优先级高于第二通信系统。
535、 判断所述第一信号强度是否满足第二回收条件, 如果所述第一信号强 度满足第二回收条件, 则执行步骤 S36, 否则返回步骤 S31 ; 其中, 所述第二回收条件包括: 所述第一信号强度小于第二回收门限, 或者, 所述第一信号强度不大于第二回收门限; 所述第二回收门限介于所述第一门限和 第二门限之间。 所述第二回收门限可以设置为在满足第一通信系统的通信质量要 求的前提下, 使第二通信系统的通信质量达到最优的第一信号强度的最小值。
536、 将所述可变电容的电容值调整至第一预设电容值, 并返回步骤 S31 ; 所述第一预设电容值大于第一电容值, 且所述第一预设电容值小于所述第二 电容值; 所述第一电容值为所述第一通信系统的工作频带对应的电容值。
537、 判断所述第一信号强度是否满足第一回收条件, 如果所述第一信号强 度满足第一回收条件, 则执行步骤 S38, 否则返回步骤 S31 ; 其中, 所述第一回收条件包括: 所述第一信号强度小于第一回收门限, 或者, 所述第一信号强度不大于所述第一回收门限; 所述第一回收门限小于第一门限。 所述第一回收门限可以根据实际场合对第一通信系统的通信质量要求设置, 一般 不小于满足第一通信系统的通信质量要求所需的最小信号强度。
538、 将所述可变电容的电容值调整至第一电容值, 并返回步骤 S31。 本申请实施例不仅设置有第一门限和第一回收门限, 还设置有第二门限和第 二回收门限, 根据第一通信系统的信号强度调节可变电容的电容值; 如图 5所示 的第一信号强度和电容值的变化关系, 可以分为以下 5种情况。 情况一: 当第一信号强度小于第一回收门限, 即位于第一区间 (满足第一回 收条件) 时, 说明第一通信系统的信号强度较弱, 甚至不能满足自身的通信质量 要求, 此时本实施例将可变电容的电容值调节至所述第一电容值, 可以保证优先 级较高的第一通信系统的通信质量达到本场合下的最优, 相应的第二通信系统的 通信质量较差。 情况二: 当第一信号强度介于第一门限和第二回收门限之间, 即位于第三区 间 (同时满足第一释放条件和第二回收条件) 时, 说明第一通信系统的信号强度 在满足自身的通信质量要求的前提下, 还有一定的信号余量 (即第一信号强度与 第一门限的差值), 可以将该信号余量释放出去, 用于第二通信系统; 因此本实 施例将电容值调节至介于第一电容值和第二电容值之间的预设电容值, 使得天线 的工作频带位于第一通信系统的工作频带和第二通信系统的工作频带之间, 释放 第一通信系统的信号余量, 以增强第二通信系统的信号, 从而在不影响第一通信 系统的通信质量的前提下, 提高第二通信系统的通信质量。 情况三: 当第一信号强度大于第二门限, 即位于第五区间 (满足第二释放条 件) 时, 说明第一通信系统的信号很强, 不仅能满足自身的通信质量要求, 还有 很大的信号余量, 因此, 本实施例将电容值调节至第二电容值, 使得第二通信系 统的通信质量达到最优, 另一方面, 虽然第一信号强度衰减, 但由于调节前其信 号余量很大, 故衰减后也可以保证第一通信系统的通信质量要求。 情况四: 当第一信号强度介于第一回收门限和第一门限之间, 即位于第二区 间时, 电容值不变; 即: 如果第一信号强度由第一区间增强至第二区间, 则电容 值保持在第一区间对应的第一电容值, 如果第一信号强度由第三区间衰减至第二 区间, 则电容值保持在第三区间对应的第一预设电容值。 情况五: 当第一信号强度介于第二回收门限和第二门限之间, 即位于第四区 间时, 电容值不变; 即: 如果第一信号强度有第三区间增减至第四区间, 则电容 值保持在第三区间对应的预设电容值, 如果第一信号强度由第五区间衰减至第四 区间, 则电容值保持在第五区间对应的第二电容值。 由以上技术方案可知, 本申请实施例通过设置第一回收门限、 第一门限、 第 二回收门限和第二门限, 将信号强度分为五个区间, 第一区间、 第三区间和第五 区间分别对应一电容值; 检测优先级较高的第一通信系统的第一信号强度, 判断 该第一信号强度位于哪个区间; 若位于第一区间、 或第三区间、 或第五区间, 则 将可变电容的电容值设置为该区间对应电容值, 若位于第二区间或第四区间, 则 不调节电容值的大小; 不仅实现了兼顾所述具有可变电容的天线所支持的多个系 统的通信质量的目的, 还可以避免可变电容的电容值出现 "乒乓效应", 减少可 变电容的调节次数, 减小对可变电容的损害。 在本申请的其他实施例中, 还可以在上述第一门限和第二回收门限之间设置 一个或多个门限,将上述第三区间划分为多个子区间,并设置对应的预设电容值, 使得具有可变电容的天线的多个通信系统的综合通信质量达到最佳。 仍以天线的 工作频带随可变电容的电容值的增大而增大为例, 参见图 6, 可以在上述第一门 限和第二回收门限之间设置第三回收门限和第三门限, 其中第三回收门限小于第 三门限; 当第一通信系统的第一信号强度小于第一回收门限时, 将天线中可变电 容的电容值设置为与第一通信系统的工作频带对应的第一电容值, 当所述第一信 号强度介于第一门限和第三回收门限之间时, 将所述可变电容的电容值设置为第 一预设电容值, 当所述第一信号强度介于第三门限和第二回收门限之间时, 将所 述可变电容的电容值设置为第二预设电容, 当所述第一信号强度大于第二门限 时, 将所述可变电容的电容值设置为第二电容值, 当第一信号强度介于第一回收 门限和第一门限之间、 或者介于第三回收门限和第三门限之间、 或者介于第二回 收门限和第二门限之间时, 不改变可变电容的电容值; 其中, 第一预设电容值介 于第一电容值和第二预设电容值之间, 第二预设电容值介于第一预设电容值和第 二电容值之间。 由以上技术方案可知, 为第一信号强度设置的门限个数越多, 可变电容的可 取值越多, 天线的工作频带越能更好的兼顾多个通信系统的通信质量要求。 本申 请实施例中, 各个门限的具体取值不作限定, 实际应用中可以根据对通信系统的 通信质量要求设置门限的个数以及每个门限的具体取值。 与上述方法实施例对应的, 本申请实施例还提供了一种基于可变电容的天线 调节装置; 该基于可变电容的天线调节装置应用于具有可变电容的天线, 可以全 部或部分集成于天线中, 也可以与天线彼此独立设置于无线通信终端中; 所述具 有可变电容的天线支持至少两种通信系统; 如图 7所示, 该基于可变电容的天线 调节装置 700包括如下单元: 信号检测单元 710, 用于检测所述具有可变电容的天线支持的第一通信系统 的第一信号强度; 第一释放判断单元 720,用于判断所述第一信号强度是否满足第一释放条件; 所述第一释放条件包括: 所述第一信号强度大于第一门限, 或者, 所述第一信号 强度不小于所述第一门限; 第一调节单元 730, 用于在所述第一信号强度满足第一释放条件时, 将所述 可变电容的电容值调节至预设电容值。 其中, 所述预设电容值介于所述第一电容值和第二电容值之间, 或者等于所 述第二电容值; 所述第一电容值为所述第一通信系统的工作频带对应的电容值; 所述第二电容值为所述具有可变电容的天线支持的第二通信系统的工作频带对 应的电容值。 由以上技术方案可知, 本申请实施例提供的基于可变电容的天线调节装置, 在所述第一信号强度满足第一释放条件时, 将所述可变电容的电容值调节至所述 预设电容值, 由于该预设电容值更接近于所述第二电容值, 相对于现有天线调节 方法中将所述可变电容的电容值始终保持在所述第一电容值, 本申请实施例使得 所述具有可变电容的天线的工作频带更接近第二通信系统的工作频带, 进而使得 第二通信系统的通信质量提高, 虽然同时第一通信系统的信号强度有所减弱, 但 由于所述第一信号强度很强, 所以不会对第一通信系统的通信质量造成很大影 响。 因此, 应用本申请实施例提供的天线调节装置, 既可以保证优先级较高的第 一通信系统的通信质量, 又可以在所述第一通信系统的信号较强时, 通过调节可 变电容的电容值, 来提高优先级较低的第二通信系统的通信质量, 达到了兼顾所 述具有可变电容的天线所支持的多个系统的通信质量的目的。 在本申请的一个可行实施例中, 上述天线调节装置 700还可以包括: 第二调节单元, 用于在所述第一信号强度不满足第一释放条件时, 将所述可 变电容的电容值调节至所述第一电容值。
参见图 8, 在本申请的另一个可行实施例中, 上述天线调节装置 700还可以 包括: 第一回收判断单元 741, 用于在所述第一信号强度不满足所述第一释放条件 时, 判断所述第一信号强度是否满足第一回收条件; 第三调节单元 742, 用于在所述第一信号强度满足所述第一回收条件时, 将 所述可变电容的电容值调整至所述第一电容值。 其中, 所述第一回收条件包括: 所述第一信号强度小于第一回收门限, 或者, 所述第一信号强度不大于所述第一回收门限; 所述第一回收门限小于第一门限。 本申请实施例中, 当所述第一信号强度大于所述第一回收门限, 且所述第一 信号强度小于第一门限 (既不满足第一回收条件, 又不满足第一释放条件) 时, 不调节可变电容的电容值, 即: 若上一次检测到的第一信号强度大于第一门限, 对应的可变电容的电容值为预设电容值, 则在本次检测到的第一信号强度降低至 第一回收门限和第一门限之间时, 将可变电容保持在所述预设电容值, 若上一次 检测到的第一信号强度小于第一回收门限, 对应的电容值为第一电容值, 则在本 次检测到第一信号强度升高至第一回收门限和第一门限之间时, 将可变电容保持 在所述第一电容值。
参见图 9, 在本申请的另一个可行实施例中, 上述第一调节单元 730包括: 第二释放判断单元 731,用于判断所述第一信号强度是否满足第二释放条件; 其中, 所述第二释放条件包括: 所述第一信号强度大于第二门限, 或者, 所述第 一信号强度不小于所述第二门限; 所述第二门限大于所述第一门限;
第一子调节单元 732, 用于在所述第一信号强度满足第二释放条件时, 将所 述可变电容的电容值调整至所述第二电容值。
在本申请的另一个可行实施例中, 第一调节单元 730还可以包括: 第二子调节单元, 用于将所述可变电容的电容值调整至第一预设电容值; 所 述第一预设电容值介于所述第一电容值和第二电容值之间。 参见图 10,在本申请的另一个可行实施例中,第一调节单元 730还可以包括: 第二回收判断单元 733, 用于在所述第一信号强度不满足所述第二释放条件 时, 判断所述第一信号强度是否满足第二回收条件; 第三子调节单元 734, 用于在所述第一信号强度满足第二回收条件时, 将所 述可变电容的电容值调整至所述第一预设电容值;其中,所述第二回收条件包括: 所述第一信号强度小于第二回收门限, 或者, 所述第一信号强度不大于第二回收 门限; 所述第二回收门限介于所述第一门限和第二门限之间。 由以上技术方案可知, 本申请实施例通过设置第一回收门限、 第一门限、 第 二回收门限和第二门限, 将信号强度分为五个区间, 第一区间、 第三区间和第五 区间分别对应一电容值; 检测优先级较高的第一通信系统的第一信号强度, 判断 该第一信号强度位于哪个区间; 若位于第一区间、 或第三区间、 或第五区间, 则 将可变电容的电容值设置为该区间对应电容值, 若位于第二区间或第四区间, 则 不调节电容值的大小; 不仅实现了兼顾所述具有可变电容的天线所支持的多个系 统的通信质量的目的, 可以避免可变电容的电容值出现 "乒乓效应", 减少可变 电容的调节次数, 减小对可变电容的损害。 为了描述的方便,描述以上装置时根据功能划分为各种单元分别描述。当然, 在实施本申请时可以把各单元的功能在同一个或多个软件和 /或硬件中实现。 与上述天线调节装置对应的, 本申请实施例还提供了一种无线通信终端。 图 11为本申请实施例提供的无线通信终端 800的结构框图; 该无线通信终 端 800可以是手机、 平板设备、 笔记本电脑等。 参见图 11,本申请实施例提供的无线通信终端 800可以包括以下一个或多个 组件:处理组件 810、存储器 820、通信组件 830、电源组件 840、传感器组件 850、 输入 /输出 (I/O ) 接口 860、 多媒体组件 870和音频组件 880。 其中, 处理组件 810通常控制无线通信终端的整体操作, 诸如与显示, 电话 呼叫, 数据通信, 相机操作和记录操作相关联的操作。 处理组件 810可以包括一 个或多个处理器 811来执行本地或者远程指令此外, 处理组件 810可以包括一个 或多个模块, 便于处理组件 810和其他组件之间的交互。
存储器 820被配置为存储各种类型的数据以支持在无线通信终端上的操作。 存储器 820可以由任何类型的易失性或非易失性存储设备或者它们的组合实现, 如静态随机存取存储器 (SRAM) , 电可擦除可编程只读存储器 (EEPR0M) , 可擦除 可编程只读存储器 (EPR0M ) , 可编程只读存储器 (PR0M ) , 只读存储器 (ROM ) , 磁存储器, 快闪存储器, 磁盘或光盘。
电源组件 840为所述无线通信终端的各种组件提供电力。 传感器组件 850包括一个或多个传感器, 用于为所述无线通信终端提供各个 方面的状态评估。
输入 /输出组件 860为处理组件 810和外围接口模块之间提供接口, 上述外 围接口模块可以是键盘, 点击轮, 按钮等。 这些按钮可包括但不限于: 主页按钮、 音量按钮、 启动按钮和锁定按钮。
多媒体组件 870包括在所述无线通信终端和用户之间提供的一个输出接口的 屏幕。 在一些实施例中, 屏幕可以包括液晶显示器 (LCD ) 和触摸面板 (TP)。 在 一些实施例中, 多媒体组件 870还可以包括前置摄像头和 /或后置摄像头。 音频组件 880被配置为输出和 /或输入音频信号。 例如, 音频组件 880包括 麦克风 (MIC)、 扬声器等。 通信组件 830被配置为便于所述无线通信终端和其他设备之间有线或无线方 式的通信。 所述无线通信终端可以接入基于通信标准的无线网络, 如 Wi-Fi, 2G 或 3G, 或它们的组合。 参照图 12, 在本申请另一个可行的实施例中, 通信组件 830包括具有可变电 容的天线 831和天线调节器 832, 还可以包括发送电路和接收电路(图中未示出) 中的至少一种。 其中, 具有可变电容的天线 831包括天线元件 831 1和可变电容 8312, 可变电容 8312接于天线元件 8311和地电位 GND之间; 该具有可变电容的 天线 831支持至少两种通信系统, 其中第一通信系统的优先级最高, 即优先满足 第一通信系统的通信质量要求。 天线调节器 832用于调节可变电容 8312的电容 值, 从而实现对具有可变电容的天线 831的工作频率的调节; 天线调节器 832包 括信号检测器件 8321和电容调节器件 8322 ;信号检测器件 8321和电容调节器件 8322分别与处理组件 810中的处理器 811连接; 信号检测器件 8321用于检测具 有可变电容的天线 831接收到的第一通信系统的第一信号强度, 并将其发送至处 理器 811 ;处理器 81 1根据信号检测器件 8321输出的检测结果(即第一信号强度) 执行存储器 820中存储的指令, 生成对应的驱动信令并将其发送至电容调节器件 8322, 电容调节器件 8322根据所述驱动指令调节可变电容 8312的电容值, 实现 上述天线调节方法, 使得在满足第一通信系统的通信指令要求的前提下, 提高其 他通信系统的通信质量。
在本申请一个可行的实施例中, 上述信号检测器件 8321 包括信号放大器、 可调衰减器、 射频变压器和功率电压转换电路; 其工作原理为信号放大器将收集 到的信号放大 (以便后续处理), 通过可调衰减器将放大后的信号控制在一定范 围内, 衰减后的信号经过射频变压器后转化为差分输入信号, 功率电压转换电路 将该差分输入信号转换为对应的直流电平输出至处理器 81 1 (该直流电平与信号 强度呈线性关系), 进而处理器可通过内置的模数转换模块将该直流电平后转换 为数字信号, 以便与各个门限比较。
本申请实施例所述的具有可变电容的天线中, 可变电容 8312 可以接于元件 8311的下地路径上, 如图 12所示, 也可以接于元件 8311的馈入端, 如图 13所 示。 电容调节器件 8322 可以为电流驱动电路、 电压驱动电路等, 通过向可变电 容 8312输出与电容值对应的驱动信号,实现调节可变电容 8312的电容值;例如, 电流驱动电路可以向可变电容 8312 输出与电容值对应的电流驱动信号、 电压驱 动电路可以向可变电容 8312输出与电容值对应的电压驱动信号。 本说明书中的各个实施例均采用递进的方式描述, 各个实施例之间相同相似 的部分互相参见即可, 每个实施例重点说明的都是与其他实施例的不同之处。 尤 其, 对于装置或系统实施例而言, 由于其基本相似于方法实施例, 所以描述得比 较简单, 相关之处参见方法实施例的部分说明即可。 以上所描述的装置及系统实 施例仅仅是示意性的, 其中所述作为分离部件说明的单元可以是或者也可以不是 物理上分开的, 作为单元显示的部件可以是或者也可以不是物理单元, 即可以位 于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中 的部分或者全部模块来实现本实施例方案的目的。 本领域普通技术人员在不付出 创造性劳动的情况下, 即可以理解并实施。 以上所述仅是本申请的具体实施方式, 应当指出, 对于本技术领域的普通技 术人员来说, 在不脱离本申请原理的前提下, 还可以做出若干改进和润饰, 这些 改进和润饰也应视为本申请的保护范围。

Claims

权 利 要 求
1、 一种基于可变电容的天线调节方法, 其特征在于, 应用于具有可变 电容的天线, 所述具有可变电容的天线支持至少两种通信系统; 所述天线调 节方法包括: 检测所述具有可变电容的天线支持的第一通信系统的第一信号强度; 判断所述第一信号强度是否满足第一释放条件; 所述第一释放条件包 括: 所述第一信号强度大于第一门限, 或者, 所述第一信号强度不小于所述 第一门限; 当所述第一信号强度满足所述第一释放条件时, 将所述可变电容的电容 值调节至预设电容值; 其中, 所述预设电容值介于所述第一电容值和第二电容值之间, 或者等于所述 第二电容值; 所述第一电容值为所述第一通信系统的工作频带对应的电容 值; 所述第二电容值为所述具有可变电容的天线支持的第二通信系统的工作 频带对应的电容值。
2、 根据权利要求 1所述的天线调节方法, 其特征在于, 还包括: 当所述第一信号强度不满足所述第一释放条件时, 将所述可变电容的电 容值调节至所述第一电容值。
3、 根据权利要求 1所述的天线调节方法, 其特征在于, 还包括: 当所述第一信号强度不满足所述第一释放条件时, 判断所述第一信号强 度是否满足第一回收条件; 当所述第一信号强度满足所述第一回收条件时, 将所述可变电容的电容 值调整至所述第一电容值; 其中, 所述第一回收条件包括: 所述第一信号强度小于第一回收门限, 或者, 所述第一信号强度不大于所述第一回收门限; 所述第一回收门限小于第一门 限。
4、 根据权利要求 广 3 任一项所述的天线调节方法, 其特征在于, 将所 述可变电容的电容值调节至预设电容值, 包括: 判断所述第一信号强度是否满足第二释放条件; 当所述第一信号强度满足所述第二释放条件时, 将所述可变电容的电容 值调整至所述第二电容值; 其中, 所述第二释放条件包括: 所述第一信号强度大于第二门限, 或者, 所述 第一信号强度不小于所述第二门限; 所述第二门限大于所述第一门限。
5、 根据权利要求 4所述的天线调节方法, 其特征在于, 还包括: 当所述第一信号强度不满足所述第二释放条件时, 将所述可变电容的电 容值调整至第一预设电容值; 其中, 所述预设电容值包括所述第一预设电容 值, 且所述第一预设电容值介于所述第一电容值和第二电容值之间; 或者, 当所述第一信号强度不满足所述第二释放条件时, 判断所述第一信号强 度是否满足第二回收条件; 当所述第一信号强度满足所述第二回收条件时, 将所述可变电容的电容 值调整至所述第一预设电容值; 其中, 所述第二回收条件包括: 所述第一信号强度小于第二回收门限, 或者, 所述第一信号强度不大于第二回收门限; 所述第二回收门限介于所述第一门 限和第二门限之间。
6、 一种基于可变电容的天线调节装置, 其特征在于, 应用于具有可变 电容的天线, 所述具有可变电容的天线支持至少两种通信系统; 所述天线调 节装置包括: 信号检测单元, 用于检测所述具有可变电容的天线支持的第一通信系统 的第一信号强度; 第一释放判断单元, 用于判断所述第一信号强度是否满足第一释放条 件; 所述第一释放条件包括: 所述第一信号强度大于第一门限, 或者, 所述 第一信号强度不小于所述第一门限; 第一调节单元, 用于在所述第一信号强度满足所述第一释放条件时, 将 所述可变电容的电容值调节至预设电容值; 其中, 所述预设电容值介于所述第一电容值和第二电容值之间, 或者等于所述 第二电容值; 所述第一电容值为所述第一通信系统的工作频带对应的电容 值; 所述第二电容值为所述具有可变电容的天线支持的第二通信系统的工作 频带对应的电容值。
7、 根据权利要求 6所述的天线调节装置, 其特征在于, 还包括: 第二调节单元, 用于在所述第一信号强度不满足所述第一释放条件时, 将所述可变电容的电容值调节至所述第一电容值。
8、 根据权利要求 6所述的天线调节装置, 其特征在于, 还包括: 第一回收判断单元, 用于在所述第一信号强度不满足所述第一释放条件 时, 判断所述第一信号强度是否满足第一回收条件; 第三调节单元, 用于在所述第一信号强度满足所述第一回收条件时, 将 所述可变电容的电容值调整至所述第一电容值; 其中, 所述第一回收条件包括: 所述第一信号强度小于第一回收门限, 或者, 所述第一信号强度不大于所述第一回收门限; 所述第一回收门限小于 第一门限。
9、 根据权利要求 6〜8任一项所述的天线调节装置, 其特征在于, 所述 第一调节单元包括: 第二释放判断单元, 用于判断所述第一信号强度是否满足第二释放条 件; 第一子调节单元, 用于在所述第一信号强度满足所述第二释放条件时, 将所述可变电容的电容值调整至所述第二电容值; 其中, 所述第二释放条件包括: 所述第一信号强度大于第二门限, 或者, 所述 第一信号强度不小于所述第二门限; 所述第二门限大于所述第一门限。
10、 根据权利要求 9所述的天线调节装置, 其特征在于, 所述第一调节 单元还包括: 第二子调节单元, 用于在所述第一信号强度不满足所述第二释放条件 时, 将所述可变电容的电容值调整至第一预设电容值; 其中, 所述预设电容 值包括所述第一预设电容值, 且所述第一预设电容值介于所述第一电容值和 第二电容值之间; 或者, 第二回收判断单元, 用于在所述第一信号强度不满足所述第二释放条件 时, 判断所述第一信号强度是否满足第二回收条件; 第三子调节单元, 用于在所述第一信号强度满足所述第二回收条件时, 将所述可变电容的电容值调整至所述第一预设电容值; 其中, 所述第二回收条件包括: 所述第一信号强度小于第二回收门限, 或者, 所述第一信号强度不大于第二回收门限; 所述第二回收门限介于所述第一门 限和第二门限之间。
11、 一种无线通信终端, 其特征在于, 所述无线通信终端包括具有可变 电容的天线和天线调节器; 所述具有可变电容的天线支持至少两种通信系 统; 所述天线调节器, 用于检测所述具有可变电容的天线所支持的第一通信 系统的第一信号强度, 并在所述第一信号强度度满足第一释放条件时, 将所 述可变电容的电容值调节至预设电容值; 其中, 所述第一释放条件包括: 所述第一信号强度大于第一门限, 或者, 所述第一信号强度不小于所述第一门限; 所述预设电容值介于所述第一电容 值和第二电容值之间, 或者等于所述第二电容值; 所述第一电容值为所述第 一通信系统的工作频带对应的电容值; 所述第二电容值为所述具有可变电容 的天线支持的第二通信系统的工作频带对应的电容值。
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