WO2016049851A1 - 一种通信终端 - Google Patents

一种通信终端 Download PDF

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Publication number
WO2016049851A1
WO2016049851A1 PCT/CN2014/087943 CN2014087943W WO2016049851A1 WO 2016049851 A1 WO2016049851 A1 WO 2016049851A1 CN 2014087943 W CN2014087943 W CN 2014087943W WO 2016049851 A1 WO2016049851 A1 WO 2016049851A1
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WO
WIPO (PCT)
Prior art keywords
antenna
terminal
communication terminal
electrically connected
sub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/087943
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English (en)
French (fr)
Inventor
李建铭
王汉阳
黄建仁
许浩维
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2014/087943 priority Critical patent/WO2016049851A1/zh
Priority to CN201480074485.7A priority patent/CN105940551B/zh
Priority to EP14902918.3A priority patent/EP3190661B1/en
Publication of WO2016049851A1 publication Critical patent/WO2016049851A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/378—Combination of fed elements with parasitic elements
    • H01Q5/385—Two or more parasitic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; 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
    • H01Q1/243—Supports; 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/04—Multimode antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24—Arrangements 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 by switching energy from one active radiating element to another, e.g. for beam switching
    • H01Q3/247—Arrangements 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 by switching energy from one active radiating element to another, e.g. for beam switching by switching different parts of a primary active element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable
    • H01Q9/145—Length of element or elements adjustable by varying the electrical length
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Definitions

  • the present invention relates to communication technologies, and in particular, to a communication terminal.
  • terminal antennas are required to have good radiation efficiency and performance.
  • the strong region of the electric field intensity distribution of the terminal antenna may cause loss attenuation due to the contact between the head and the hand when approaching the head and the human hand, thereby reducing the radiation efficiency and performance of the antenna.
  • an inverted antenna Inverted F Antenna, IFA
  • a Planar Inverted F Antenna PIFA
  • the present invention provides a communication terminal for solving the problem of performance difference between the left and right heads and the hand approaching the terminal in the prior art.
  • a first aspect of the embodiments of the present invention provides a communication terminal, including:
  • a feed terminal a ground terminal, an antenna and a switch component, the antenna being of an asymmetrical structure
  • the feed terminal is electrically connected to a feed circuit in the communication terminal, and the ground terminal is electrically connected to a ground end of the communication terminal;
  • the switch component is configured to switch between a first connection mode and a second connection mode
  • the first connection manner includes: the power feeding terminal is electrically connected to the first end of the antenna, and the ground terminal is electrically connected to the second end of the antenna;
  • the second connection manner includes the ground terminal being electrically connected to the first end of the antenna, and the feed terminal being electrically connected to the second end of the antenna.
  • the antenna is a loop antenna with an asymmetric structure.
  • a second aspect of the embodiments of the present invention provides a communications terminal, including:
  • the antenna comprising an inverted T-shaped member, a first sub-antenna and a second sub-antenna; the inverted T-shaped member comprising a cross bar and a vertical leg;
  • the feed terminal is electrically connected to a feed circuit in the communication terminal, and the ground terminal is electrically connected to a ground end of the communication terminal;
  • the vertical leg of the inverted T-shaped member is electrically connected to the feed terminal
  • the first sub-antenna and the second sub-antenna are respectively disposed on two sides of the vertical leg;
  • the fixed end of the single pole double throw switch is electrically connected to the ground terminal; the first contact end of the single pole double throw switch is electrically connected to the first sub antenna, and the second contact end and the second sub The antenna is electrically connected.
  • the antenna further includes a first inductor
  • the first inductor is disposed between the first sub-antenna and the first contact end.
  • the antenna further includes a second inductor
  • the second inductor is disposed between the second sub-antenna and the second contact end.
  • the communication terminal includes: a feeding terminal, a grounding terminal, an antenna and a switch component, the antenna is an asymmetric structure; the feeding terminal is electrically connected with the feeding circuit in the terminal, the grounding terminal and the terminal The grounding end is electrically connected; the switch component is configured to switch between the first connection mode and the second connection mode; the first connection mode comprises: the feeding terminal is electrically connected to the first end of the antenna, and the grounding terminal is electrically connected to the second end of the antenna The second connection mode includes the ground terminal being electrically connected to the first end of the antenna, and the feed terminal being electrically connected to the second end of the antenna.
  • the communication terminal only includes one feeding terminal and one grounding terminal, so that the number of pads can be reduced, and when the left and right heads and the hand are close to the terminal, different connection modes can be switched through the switching components, so that the communication terminal can be applied to the left hand.
  • the handheld mode is different from the right hand, or different head proximity postures, so as to ensure that when the left and right heads and hands approach the communication terminal, the influence on the communication terminal is similar, thereby ensuring that the performance gain of the communication terminal is similar.
  • FIG. 1a is a schematic structural diagram of a communication terminal according to Embodiment 1 of the present invention.
  • FIG. 1b is a schematic structural diagram of another communication terminal according to Embodiment 1 of the present invention.
  • FIG. 2a is a schematic structural diagram of a communication terminal according to Embodiment 2 of the present invention.
  • 2b is a schematic diagram of electric field intensity distribution of a loop antenna with a symmetrical structure
  • FIG. 2c is a schematic structural diagram of another communication terminal according to Embodiment 2 of the present invention.
  • FIG. 2 is a schematic structural diagram of still another communication terminal according to Embodiment 2 of the present invention.
  • FIG. 2 e is a schematic structural diagram of still another communication terminal according to Embodiment 2 of the present invention.
  • FIG. 3 is a schematic structural diagram of a communication terminal according to Embodiment 3 of the present invention.
  • 3b is a schematic structural diagram of a communication terminal according to Embodiment 3 of the present invention.
  • FIG. 3c is a schematic diagram showing the performance of the communication terminal provided by the third embodiment of the present invention when the left hand is used;
  • FIG. 3d is a schematic diagram showing the performance of the communication terminal provided by the third embodiment of the present invention when the right hand is used.
  • FIG. 1 is a schematic structural diagram of a communication terminal according to Embodiment 1 of the present invention. As shown in FIG. 1a, the communication terminal 1 includes a feed terminal 10, a ground terminal 11, an antenna 12, and a switch member 13.
  • the feed terminal 10 is electrically connected to a feed circuit in the communication terminal
  • the ground terminal 11 is electrically connected to a ground terminal in the communication terminal.
  • the communication terminal here can be a mobile device, a user terminal Terminals, wireless communication devices, etc., in addition, it should be noted that the terminals mentioned in the context refer to communication terminals; the feeding circuit here is used to process the transmission signals generated by the terminal transmitters and provide them to the communication terminal 1 And after the communication terminal 1 receives the signal, the received signal is processed and transmitted to the receiver of the terminal.
  • the antenna 12 has an asymmetrical structure.
  • the antenna 12 described above may be implemented by a loop antenna having an asymmetric structure.
  • the switch member 13 is for switching between the first connection mode and the second connection mode.
  • the first connection mode includes the power supply terminal 10 electrically connected to the first end 120 of the antenna 12, the ground terminal 11 is electrically connected to the second end 121 of the antenna 12, and the second connection mode includes the ground terminal 11 and the first end of the antenna 12.
  • the terminal 120 is electrically connected, and the feed terminal 10 is electrically connected to the second end 121 of the antenna 12.
  • the first connection mode and the second connection mode described above correspond to FIGS. 1a and 1b, respectively.
  • the two ends of the switching component 13 respectively connected to the feeding terminal 10 and the grounding terminal 11 can be used as a fixed end, and respectively connected to the antenna 12 Both ends of the first end 120 and the second end 121 serve as contact ends.
  • the two ends of the switch member 13 connected to the feed terminal 10 and the ground terminal 11 respectively may be used as the contact ends, and the two ends of the first end 120 and the second end 121 of the antenna 12 are respectively fixed ends. .
  • the principles of the above two methods are similar, and the subsequent embodiments are mainly described by taking the first example as an example.
  • the first end 120 of the antenna 12 is electrically connected to one of the two contact ends of the switch member 13, thereby communicating the feed terminal 10, and the second end 121 of the antenna 12 passes through the switch member.
  • the other of the two contact ends of 13 is electrically connected to communicate with the ground terminal 11, while in FIG. 1b, the first end 120 of the antenna 12 is electrically connected to one of the two contact ends of the switch member 13, Thereby, the ground terminal 11 is communicated, and the second end 121 of the antenna 12 is electrically connected to the other of the two contact terminals of the switch member 13, thereby communicating the feed terminal 10.
  • the terminal antenna Since the strong region of the electric field intensity distribution of the terminal antenna is close to the head and the hand, the loss may be attenuated due to the contact of the head and the hand, while the left hand and the right hand are different in the hand-held manner when the terminal is used, or the posture of the head close to the terminal is different. Therefore, the terminal antenna is affected differently, so that the performance of the terminal antenna is different when the left and right heads are close to the terminal.
  • the communication terminal 1 provided in this embodiment, since the antenna 12 has an asymmetric structure, when the switch member 13 is switched between the first connection mode and the second connection mode, the antenna 12 and the feed terminal 10 and the ground terminal are used. The connection of 11 will be different, which will result in different electric field intensity distribution on it, so that it can match the left hand.
  • the hand-held mode different from the right hand, or different head approaching posture ensures that the influence of the communication terminal 1 is similar when the left and right heads and the hand approach the communication terminal 1 by switching the connection mode, thereby ensuring that the performance gain of the communication terminal 1 is similar.
  • the left hand uses the existing communication terminal or the left head approaches the existing communication terminal
  • the strong region of the antenna electric field intensity distribution is at the left hand holding position, so the performance of the terminal antenna is poor
  • the right hand When the existing communication terminal is not set or the right head is close to the existing communication terminal, the existing communication is because the strong region of the antenna electric field intensity distribution is at the left hand holding position or the left head is close to the existing communication terminal.
  • the terminal is not affected too much, so the performance is better, which is the different impact of different handheld modes or different head proximity postures on existing communication terminals.
  • the switching section 13 of the communication terminal 1 can be placed at a position where the strong region of the electric field intensity distribution of the antenna 12 is away from the left hand or the left head is close to the communication terminal 1, and thus the performance of the communication terminal 1 is good at this time.
  • the communication terminal can be The switching member 13 of 1 is placed at a position where the strong region of the electric field intensity distribution of the antenna 12 is away from the right hand or the right head is close to the communication terminal 1, and thus the performance of the communication terminal 1 is also good at this time, thereby ensuring the right and left When the head and the hand approach the terminal, the influence on the communication terminal 1 is similar, thereby ensuring that the performance gain of the communication terminal 1 is similar.
  • a primary mode (Low Band, LB for short), a secondary mode (High Band1, abbreviated as HB1) and three times for characterizing the radiation efficiency of the antenna 12 are used.
  • the maximum electric field distribution point of the mode (High Band 2, referred to as HB2) is shown by a small square in FIG. 1a; when the switching component 13 is switched to the second connection mode as shown in FIG. 1b, the antenna 12 is used to characterize the antenna 12.
  • the maximum electric field distribution points of LB, HB1 and HB2 for radiation efficiency are also shown in small squares in Fig. 1d. It can be seen that in these two operating states, the electric field intensity distribution of the antenna 12 is different.
  • the switching component 13 can be switched to the one shown in FIG. 1a when the left head and the hand are close to the communication terminal 1.
  • the switch member 13 is switched to the connection mode shown in FIG. 1b, thereby ensuring The different hand-held modes of the left hand and the right hand, or different head proximity postures have the same influence on the communication terminal 1, thereby ensuring that the performance gains of the communication terminal 1 are similar.
  • the electric field intensity distribution of the antenna 12 of different asymmetric structures may be different, and therefore, the shape of the antenna 12 can be determined according to the radiation efficiency of the communication terminal 1 that is actually required.
  • the communication terminal includes: a feeding terminal, a grounding terminal, an antenna and a switch component, the antenna is an asymmetric structure; the feeding terminal is electrically connected with the feeding circuit in the terminal, the grounding terminal and the terminal The grounding end is electrically connected; the switch component is configured to switch between the first connection mode and the second connection mode; the first connection mode comprises: the feeding terminal is electrically connected to the first end of the antenna, and the grounding terminal is electrically connected to the second end of the antenna The second connection mode includes the ground terminal being electrically connected to the first end of the antenna, and the feed terminal being electrically connected to the second end of the antenna.
  • the communication terminal only includes one feeding terminal and one grounding terminal, so that the number of pads can be reduced, and when the left and right heads and the hand are close to the terminal, different connection modes can be switched through the switching components, so that the communication terminal can be applied to the left hand.
  • the handheld mode is different from the right hand, or different head proximity postures, so as to ensure that when the left and right heads and hands approach the communication terminal, the influence on the communication terminal is similar, thereby ensuring that the performance gain of the communication terminal is similar.
  • FIG. 2 is a schematic structural diagram of a communication terminal according to Embodiment 2 of the present invention.
  • the communication terminal 2 includes a feed terminal 10, a ground terminal 11, an antenna 20, and a switch member 13.
  • the antenna 20 includes a loop antenna 21 and an inductor 22 of a symmetrical structure.
  • the communication terminal 2 also includes a sensor 23 and a controller 24.
  • the feed terminal 10 is electrically connected to the feed circuit in the terminal, and the ground terminal 11 is electrically connected to the ground terminal in the terminal.
  • the communication terminal herein may be a mobile device, a user terminal, a wireless communication device, or the like.
  • the feed terminal 10 is electrically connected to the first end 120 of the antenna 12, and the ground terminal 11 is electrically connected to the second end 121 of the antenna 12; the inductor 22 is disposed between the feed terminal 10 and the first end 200 of the antenna 20; One of the two fixed ends of the switch member 13 is electrically connected to the feed terminal 10 and the other is electrically connected to the ground terminal 11; one of the two contact ends of the switch member 13 and the first end 200 of the antenna 20, ie The first end of the symmetrical structure of the loop antenna 21 is electrically connected to the other end of the second end 201 of the antenna 20, that is, the second end of the loop antenna 21 of the symmetrical structure.
  • the sensor 23 is for detecting the left hand state and the right hand state, and the controller 24 and the sensor 23 are respectively It is connected to the switch unit 13 for controlling the switching unit 13 to switch to the connection mode matching the detection result based on the detection result of the sensor 23.
  • the sensor may be a pressure sensitive sensor, an accelerometer, a gyroscope, a magnetometer, a proximity light sensor, or the like.
  • FIG. 2b shows the electric field intensity distribution diagram of the loop antenna 21 of a symmetrical structure when no inductance is applied, and there is no switch component in FIG. 2b, and FIG. 2a has the switch component 13, and at the feed terminal.
  • 10 is an electric field intensity distribution diagram after the inductor 22 is disposed between the first end 200 of the antenna 20, and FIG. 2c is similar to the structure of FIG. 2a except that the switch component 13 is switched to the second connection mode, and the inductor 22 is set to the feed at this time.
  • the terminal 10 is between the terminal 20 and the second end 201 of the antenna 20. Comparing FIG. 2a and FIG. 2b, it can be seen that the electric field intensity of the loop antenna 21 is evenly distributed before the inductor 22 is added.
  • the left hand and the right hand may have different hand-held manners or different head close postures to the communication terminal 2.
  • the head and the hand approach the performance difference of the terminal communication terminal 2, after the inductor 22 is added, the electric field strength is no longer uniformly distributed.
  • the first end 200 of the antenna 20 passes through One of the two contact ends of the switch member 13 is electrically connected to communicate with the feed terminal 10, and the second end 201 is electrically connected to the other of the two contact terminals of the switch member 13 to communicate the ground terminal 11, In FIG.
  • the first end 200 of the antenna 20 is electrically connected to one of the two contact ends of the switch member 13, thereby communicating the ground terminal 11, and the second end 201 of the antenna 20 passes through two of the switch members 13.
  • the other of the contact terminals is electrically connected to communicate with the feed terminal 10.
  • the maximum electric field distribution points of LB, HB1 and HB2 for characterizing the radiation efficiency of the loop antenna 21 are shown in small squares in FIG. 2a.
  • the maximum electric field distribution points of LB, HB1 and HB2 for characterizing the radiation efficiency of the loop antenna 21 are also shown by small squares in FIG. 2c. . It can be seen that the electric field intensity distribution of the loop antenna 21 is different under these two operating states, and therefore, in practice, the sensor 23 can detect the left-hand state and the right-hand state, and use the communication terminal 2 or the left head in the left hand.
  • the detection result is sent to the controller 24, and the controller 24 can control the switch component 13 to switch to the connection mode shown in FIG. 2a according to the detection result; and use the communication terminal 2 in the right hand, or
  • the switch unit 13 is controlled by the controller 24 to switch to the connection mode shown in Fig. 2c, so that it can match the different hand-held modes of the left and right hands, or different head close postures. Therefore, by switching the connection mode, it is ensured that when the left and right heads and the hand approach the communication terminal 2, the influence on the communication terminal 2 is similar, thereby ensuring that the performance gain of the communication terminal 2 is similar.
  • the value of the inductor 22 is determined by the operating frequency of the communication terminal 2.
  • the inductor 22 can also be disposed between the ground terminal 11 and the first end 200 of the antenna 20 or the second end 201 of the antenna 20 by switching of the switch component 13 .
  • the specific connection relationship and its field strength distribution are shown in Figure 2d and Figure 2e.
  • the working principle is similar to Figure 2c and Figure 2a, respectively, and will not be described here.
  • the communication terminal includes: a feeding terminal, a grounding terminal, an antenna and a switch component, the antenna is an asymmetric structure; the feeding terminal is electrically connected with the feeding circuit in the terminal, the grounding terminal and the terminal The grounding end is electrically connected; the switch component is configured to switch between the first connection mode and the second connection mode; the first connection mode comprises: the feeding terminal is electrically connected to the first end of the antenna, and the grounding terminal is electrically connected to the second end of the antenna The second connection mode includes the ground terminal being electrically connected to the first end of the antenna, and the feed terminal being electrically connected to the second end of the antenna.
  • the antenna is an asymmetric structure
  • the feed terminal is electrically connected to the feed circuit in the terminal
  • the ground terminal is electrically connected to the ground end in the terminal
  • the switch component is used in the Switching between a connection mode and a second connection mode
  • the first connection mode includes: the power supply terminal is electrically connected to the first end of the antenna, the ground terminal is electrically connected to the second end of the antenna; and the second connection mode includes the ground terminal and the antenna The first end is electrically connected, and the feed terminal is electrically connected to the second end of the antenna.
  • the communication terminal only includes one feeding terminal and one grounding terminal, so that the number of pads can be reduced, and when the left and right heads and the hand are close to the terminal, different connection modes can be switched through the switching components, so that the communication terminal can be applied to the left hand.
  • the handheld mode is different from the right hand, or different head proximity postures, so as to ensure that when the left and right heads and hands approach the communication terminal, the influence on the communication terminal is similar, thereby ensuring that the performance gain of the communication terminal is similar.
  • FIG. 3 is a schematic structural diagram of a communication terminal according to Embodiment 3 of the present invention.
  • the communication terminal 3 includes a feed terminal 10, a ground terminal 11, an antenna 12, and a single pole double throw switch 13.
  • the antenna 12 includes an inverted T-shaped component 30, a first sub-antenna 31, and a second sub-antenna 32.
  • the feed terminal 10 is electrically connected to a feed circuit in the communication terminal
  • the ground terminal 11 is electrically connected to a ground terminal in the communication terminal.
  • the communication terminal herein may be a mobile device, a user terminal, a wireless communication device, etc., where the feeding circuit is used to process the transmission signal generated by the terminal transmitter and then provide it to the communication terminal 3, and after the communication terminal 3 receives the signal, The received signal is processed and transmitted to the receiver of the terminal.
  • the inverted T-shaped member 30 includes a cross bar and a vertical leg; the vertical leg of the inverted T-shaped member 30 is electrically connected to the feed terminal 10; the first sub-antenna 31 and the second sub-antenna 32 are respectively disposed on both sides of the vertical leg;
  • the fixed end of the throw switch 13 is electrically connected to the ground terminal 11; the first contact end 130 of the single pole double throw switch 13 is electrically connected to the first sub antenna 31, and the second contact end 131 is electrically connected to the second sub antenna 32.
  • FIG. 3b is a schematic structural diagram of a communication terminal according to Embodiment 3 of the present invention.
  • the single-pole double-throw switch 13 is another connection mode. Since the first sub-antenna 31 and the second sub-antenna 32 are disposed opposite to each other with respect to the vertical leg of the inverted T-shaped member 30, when the single-pole double-throw switch 13 is in the state shown in FIG. 3a, the first sub-antenna 31 is turned on. Between the feed terminal 10 and the ground terminal 11, since the first sub-antenna 31 is disposed on the left side, in practice, it is more suitable for the general left-handed communication terminal or the left head approaching the communication terminal.
  • the second sub-antenna 32 is turned on.
  • the different connection manner of the single-pole double-throw switch 13 can be adopted, that is, the manner of switching the lower leg of the sub-antenna, so that the Communication terminal 3 can be applied to the left hand Right hand different manner or different head approach attitude, so as to ensure that the left and right head, hand approaches 3, similar to the communication terminal 3 in the communication terminal, thereby ensuring the communication terminal 3 similar performance gain.
  • the first sub-antenna 31 may be disposed at a distance parallel to the crossbar and away from the second sub-antenna 32, and after being bent twice, and the single-pole double-throw switch 13
  • the electrically connected metal wires of the first contact end 130, the second sub-antenna 32 may be disposed at a distance parallel to the crossbar and away from the first sub-antenna 31, and after two bending and single-pole double throw Electrically connected metal wires of the second contact end 131 of the switch 13.
  • the metal wire parallel to the crossbar of the inverted T-shaped member 31 in 31 is in parallel relationship with the crossbar, and therefore, this corresponds to the formation of a capacitor, and the bent portion of the metal wire constituting the first sub-antenna 31 is This is equivalent to the formation of an inductance, so that this capacitance and inductance can form a resonance, thereby realizing the radiation of the first sub-antenna 30 to electromagnetic waves.
  • the second sub-antenna 32 the principle is similar.
  • the vertical distance between the crossbars of the first sub-antenna 31 parallel to the crossbar affects the capacitive reactance of the capacitor, and thus can generally be operated according to the communication terminal 3.
  • the frequency determines the above vertical distance.
  • the principle of the second sub-antenna 32 is similar, and the vertical distance between the metal wires parallel to the crossbar to the crossbar can also be determined according to the operating frequency of the communication terminal 3. It should be noted that, in FIG. 3a and FIG. 3b, the structures of the first sub-antenna 31 and the second sub-antenna 32 are only examples.
  • the number of times of bending of the metal wires and the above-mentioned cross-bars are The vertical distance or the like can be determined according to the operating frequency of the communication terminal 3.
  • the first sub-antenna 31 and the second sub-antenna 32 may be disposed symmetrically or asymmetrically on both sides of the vertical leg of the inverted T-shaped member 30.
  • the communication terminal 3 can further include a first inductor 34 disposed between the first sub-antenna 31 and the first contact end 130.
  • the first inductor 34 functions as the first sub-antenna
  • the inductance of 31 itself is similar, and its actual value can be determined according to the operating frequency of the communication terminal 3.
  • the communication terminal 3 may further include a second inductor 35 disposed between the second sub-antenna 32 and the second contact end 131.
  • the second inductor 35 functions as a second sub-antenna
  • the inductance of 32 itself is similar, and its actual value can be determined according to the operating frequency of the communication terminal 3.
  • the communication terminal 3 may further include a sensor 36 and a controller 37.
  • the sensor 36 is configured to detect the left-hand state and the right-hand state;
  • the controller 37 is connected to the sensor 36 and the single-pole double-throw switch 13, respectively, for controlling the single-pole double-throw switch 13 to be switched to match the detection result according to the detection result of the sensor 36.
  • Connection method Not shown in Figures 3a and 3b, the specific connections are similar to those of Figure 2a and will not be described again here.
  • FIG. 3 is a schematic diagram showing the performance of the communication terminal provided by the third embodiment of the present invention when the left hand is used
  • FIG. 3 is a schematic diagram of the performance when the communication terminal provided by the third embodiment of the present invention is used by the right hand.
  • the horizontal axis represents the frequency
  • the vertical axis represents the performance gain of the communication terminal 3
  • the solid line represents the performance gain of the single-pole double-throw switch 13 in the state shown in FIG. 3a
  • the broken line represents the single-pole double-throw switch 13 in FIG. 3b.
  • Performance gain in the state shown It can be seen that between 894 MHz and 2190 MHz, that is, in the Global System for Mobile communication (GSM) and Long Term Evolution (LTE) bands, communication is used for the left and right hands.
  • the performance at terminal 3 is close.
  • the communication terminal comprises: a feeding terminal, a grounding terminal, an antenna and a single pole double throw switch, the antenna comprises an inverted T-shaped component, a first sub-antenna and a second sub-antenna; the feeding terminal and the communication terminal
  • the feeding circuit is electrically connected, the grounding terminal is electrically connected to the grounding end of the communication terminal; the vertical leg of the inverted T-shaped component is electrically connected with the feeding terminal; the first sub-antenna and the second sub-antenna are respectively disposed on the vertical leg
  • the fixed end of the single-pole double-throw switch is electrically connected to the ground terminal; the first contact end of the single-pole double-throw switch is electrically connected to the first sub-antenna, and the second contact end is electrically connected to the second sub-antenna.
  • the communication terminal includes only one feeding terminal and one grounding terminal, so that the number of pads can be reduced, and the communication terminal provided by the embodiment of the invention can be applied to different hand-held modes of different left and right hands or different head proximity postures. Therefore, when the left and right heads and hands are close to the communication terminal, the influence on the communication terminal is similar, thereby ensuring that the performance gain of the communication terminal is similar.

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Abstract

本发明提供一种通信终端，包括：一个馈电端子、一个接地端子、天线和开关部件，所述天线为非对称结构；所述馈电端子与所述通信终端中的馈电电路电连接，所述接地端子与所述通信终端中的接地端电连接；所述开关部件用于在第一连接方式和第二连接方式之间切换；所述第一连接方式包括所述馈电端子与所述天线的第一端电连接，所述接地端子与所述天线的第二端电连接；所述第二连接方式包括所述接地端子与所述天线的第一端电连接，所述馈电端子与所述天线的第二端电连接。采用本发明实施例的技术方案，可减少焊盘数量，并保证左右头、手接近终端时对天线的影响相同。

Description

一种通信终端 技术领域
本发明涉及通信技术，尤其涉及一种通信终端。
背景技术
通信技术的发展和应用对终端的要求越来越高，特别的，需要终端天线具有良好的辐射效率和性能。
根据理论和实践的经验，终端天线电场强度分布的强区在靠近头、人手时，可能会因头、手的接触而而产生损耗衰减，从而降低天线的辐射效率和性能。
在现有通信终端中，通常采用倒置F型天线(Inverted F Antenna，简称IFA)或平面倒置F型天线(Planar Inverted F Antenna，简称PIFA)等作为终端天线，由于IFA或PIFA天线本身并不对称，因此，当左右头、手接近终端时，对终端天线的影响不同。
发明内容
本发明提供一种通信终端，用以解决现有技术中左右头、手接近终端时的性能差异的问题。
本发明实施例的第一方面，提供一种通信终端，包括：
一个馈电端子、一个接地端子、天线和开关部件，所述天线为非对称结构；
所述馈电端子与所述通信终端中的馈电电路电连接，所述接地端子与所述通信终端中的接地端电连接；
所述开关部件用于在第一连接方式和第二连接方式之间切换；
所述第一连接方式包括所述馈电端子与所述天线的第一端电连接，所述接地端子与所述天线的第二端电连接；
所述第二连接方式包括所述接地端子与所述天线的第一端电连接，所述馈电端子与所述天线的第二端电连接。
在第一种可能的实现方式中，根据第一方面，所述天线为非对称结构的环形天线。
本发明实施例的第二方面，提供一种通信终端，包括：
一个馈电端子、一个接地端子、天线和单刀双掷开关，所述天线包括倒T型部件、第一子天线和第二子天线；所述倒T型部件包括横杆和垂直腿；
所述馈电端子与所述通信终端中的馈电电路电连接，所述接地端子与所述通信终端中的接地端电连接；
所述倒T型部件的垂直腿与所述馈电端子电连接；
所述第一子天线和所述第二子天线分别设置在所述垂直腿的两侧；
所述单刀双掷开关的固定端与所述接地端子电连接；所述单刀双掷开关的第一触点端与所述第一子天线电连接，第二触点端与所述第二子天线电连接。
在第一种可能的实现方式中，根据第二方面，所述天线还包括第一电感；
所述第一电感设置于所述第一子天线与所述第一触点端之间。
在第二种可能的实现方式中，根据第二方面，所述天线还包括第二电感；
所述第二电感设置于所述第二子天线与所述第二触点端之间。
本发明实施例提供的通信终端，包括：一个馈电端子、一个接地端子、天线和开关部件，天线为非对称结构；馈电端子与终端中的馈电电路电连接，接地端子与终端中的接地端电连接；开关部件用于在第一连接方式和第二连接方式之间切换；第一连接方式包括馈电端子与天线的第一端电连接，接地端子与天线的第二端电连接；第二连接方式包括接地端子与天线的第一端电连接，馈电端子与天线的第二端电连接。该通信终端只包括一个馈电端子和一个接地端子，因而可以减少焊盘数量，并且，在左右头、手接近终端时，可以通过开关部件切换不同的连接方式，使得该通信终端可以适用于左手和右手不同的手持方式，或不同的头部接近姿势，从而保证当左右头、手接近通信终端时，对通信终端的影响相近，进而保证通信终端的性能增益相近。
附图说明
为了更清楚地说明本发明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做一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，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1a为本发明实施例一提供的一种通信终端的结构示意图；
图1b为本发明实施例一提供的另一种通信终端的结构示意图；
图2a为本发明实施例二提供的一种通信终端的结构示意图；
图2b为对称结构的环形天线的电场强度分布示意图；
图2c为本发明实施例二提供的另一种通信终端的结构示意图；
图2d为本发明实施例二提供的又一种通信终端的结构示意图；
图2e为本发明实施例二提供的又一种通信终端的结构示意图；
图3a为本发明实施例三提供的一种通信终端的结构示意图；
图3b为本发明实施例三提供的一种通信终端的结构示意图；
图3c为左手使用本发明实施例三提供的通信终端时的性能示意图；
图3d为右手使用本发明实施例三提供的通信终端时的性能示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1a为本发明实施例一提供的一种通信终端的结构示意图。如图1a所示，该通信终端1包括：一个馈电端子10、一个接地端子11、天线12和开关部件13。
具体的，馈电端子10与通信终端中的馈电电路电连接，接地端子11与通信终端中的接地端电连接。这里的通信终端可以是移动设备、用户终 端、无线通信设备等，另外，需要说明的是，上下文中提到的终端，均是指通信终端；此处的馈电电路用于将终端发射机生成的发射信号处理后提供给通信终端1，以及在通信终端1接收信号之后，将接收信号处理后传送至终端的接收机中。
天线12为非对称结构。可选的，可以采用非对称结构的环形天线实现上述天线12。
开关部件13用于在第一连接方式和第二连接方式之间切换。其中，第一连接方式包括馈电端子10与天线12的第一端120电连接，接地端子11与天线12的第二端121电连接；第二连接方式包括接地端子11与天线12的第一端120电连接，馈电端子10与天线12的第二端121电连接。
上述第一连接方式和第二连接方式分别对应于图1a和图1b。其中，为了使开关部件13在两种连接方式之间切换，在实现时，可以将开关部件13分别与馈电端子10和接地端子11连接的两端作为固定端，而将其分别与天线12的第一端120和第二端121的两端作为触点端。当然，也可以将开关部件13分别与馈电端子10和接地端子11连接的两端作为触点端，而将其分别与天线12的第一端120和第二端121的两端作为固定端。上述两种方式的原理类似，后续实施例主要以第一种为例进行详细说明。
具体的，在图1a中，天线12的第一端120通过与开关部件13的两个触点端中的一个电连接，从而连通馈电端子10，天线12的第二端121通过与开关部件13的两个触点端中的另一个电连接，从而连通接地端子11，而在图1b中，天线12的第一端120通过与开关部件13的两个触点端中的一个电连接，从而连通接地端子11，天线12的第二端121通过与开关部件13的两个触点端中的另一个电连接，从而连通馈电端子10。
由于终端天线电场强度分布的强区在靠近人头、手时，可能会因人头、手的接触而产生损耗衰减，而左手和右手使用终端时的手持方式不同，或者头部接近终端的姿势不同，因此会对终端天线造成不同的影响，从而使得终端天线在左右头、手接近终端时的性能不同。而使用本实施例提供的通信终端1，由于天线12为非对称结构，因而当用开关部件13在第一连接方式和第二连接方式之间切换时，天线12与馈电端子10和接地端子11的连接也会不同，即会导致其上的电场强度分布不同，这样即可匹配左手 和右手不同的手持方式，或不同的头部接近姿势，从而通过切换连接方式，保证当左右头、手接近通信终端1时对通信终端1的影响相近，进而保证通信终端1的性能增益相近。
举例来说，当左手使用现有通信终端或者左头部接近现有通信终端时，假设其天线电场强度分布的强区在左手的手拿位置处，因此该终端天线的性能较差，而右手使用未设置现有通信终端或者右头部接近现有通信终端时，由于其天线电场强度分布的强区在左手的手拿位置处或左头部接近现有通信终端处，因此该现有通信终端并未受到太大影响，因而性能较好，这就是不同手持方式或不同头部接近姿势对现有通信终端造成的不同影响。相比来说，当左手使用通信终端1或者左头部接近通信终端1时，由于其天线12的电场强度分布的强区在左手的手拿位置处或左头部接近通信终端1处，因此可以将通信终端1的开关部件13置于使天线12的电场强度分布的强区远离左手的手拿位置处或左头部接近通信终端1处，因而此时该通信终端1的性能较好，而当右手使用通信终端1或者右头部接近通信终端1时，由于其天线12的电场强度分布的强区在左手的手拿位置处或左头部接近通信终端1处，因此可以将通信终端1的开关部件13置于使天线12的电场强度分布的强区远离右手的手拿位置处或右头部接近通信终端1处，因而此时该通信终端1的性能也较好，从而保证左右头、手接近终端时对通信终端1的影响相近，进而保证通信终端1的性能增益相近。
下面具体用天线12的场强分布的改变来解释上述过程。
当开关部件13切换至如图1a所示的第一连接方式时，用于表征该天线12的辐射效率的一次模(Low Band，简称LB)、二次模(High Band1，简称HB1)及三次模(High Band2，简称HB2)最大电场分布点均在图1a中的用小方格示出；当开关部件13切换至如图1b所示的第二连接方式时，用于表征该天线12的辐射效率的LB、HB1及HB2最大电场分布点也均在图1d中的用小方格示出。可以看出，在这两种工作状态下，天线12的电场强度分布是不同的，因此，在实际中，可以在左头、手靠近通信终端1时，将开关部件13切换至图1a所示的连接方式；在右头、手靠近通信终端1时，将开关部件13切换至图1b所示的连接方式，从而即可保 证左手和右手不同的手持方式，或不同的头部接近姿势对通信终端1的影响相同，进而保证通信终端1的性能增益相近。当然，不同的非对称结构的天线12的电场强度分布可能不同，因此，可以根据实际需要通信终端1的辐射效率确定天线12的形状。
本发明实施例提供的通信终端，包括：一个馈电端子、一个接地端子、天线和开关部件，天线为非对称结构；馈电端子与终端中的馈电电路电连接，接地端子与终端中的接地端电连接；开关部件用于在第一连接方式和第二连接方式之间切换；第一连接方式包括馈电端子与天线的第一端电连接，接地端子与天线的第二端电连接；第二连接方式包括接地端子与天线的第一端电连接，馈电端子与天线的第二端电连接。该通信终端只包括一个馈电端子和一个接地端子，因而可以减少焊盘数量，并且，在左右头、手接近终端时，可以通过开关部件切换不同的连接方式，使得该通信终端可以适用于左手和右手不同的手持方式，或不同的头部接近姿势，从而保证当左右头、手接近通信终端时，对通信终端的影响相近，进而保证通信终端的性能增益相近。
图2a为本发明实施例二提供的一种通信终端的结构示意图。如图2a所示，该通信终端2包括：一个馈电端子10、一个接地端子11、天线20和开关部件13，天线20包括对称结构的环形天线21和电感22。该通信终端2还包括传感器23和控制器24。
具体的，馈电端子10与终端中的馈电电路电连接，接地端子11与终端中的接地端电连接。这里的通信终端可以是移动设备、用户终端、无线通信设备等。
其中，馈电端子10与天线12的第一端120电连接，接地端子11与天线12的第二端121电连接；电感22设置于馈电端子10与天线20的第一端200之间；开关部件13的两个固定端中的一个与馈电端子10电连接，另一个与接地端子11电连接；开关部件13的两个触点端中的一个与天线20的第一端200，即对称结构的环形天线21的第一端电连接，与另一个与天线20的第二端201，即对称结构的环形天线21的第二端电连接。
传感器23用于检测左手状态和右手状态，控制器24分别与传感器23 和开关部件13连接，用于根据传感器23的检测结果，控制开关部件13切换至与检测结果相匹配的连接方式。其中，所述传感器可以是压敏传感器、加速度计、陀螺仪、磁力计、接近光传感器等。
为了便于比较，图2b给出了未加电感时的对称结构的环形天线21的电场强度分布图，且图2b中并没有开关部件，而图2a则是有开关部件13，并且在馈电端子10与天线20的第一端200之间设置电感22后的电场强度分布图，图2c与图2a结构类似，只是其中的开关部件13切换至第二连接方式，此时电感22设置于馈电端子10与天线20的第二端201之间。对比图2a和图2b可以看出，在加入电感22之前，环形天线21的电场强度是均匀分布的，因此，左手和右手对通信终端2不同的手持方式或者不同的头部接近姿势会造成左右头、手接近使终端通信终端2时的性能差异，而在加入了电感22之后，电场强度不再均匀分布，与前一段的描述类似，在图2a中，天线20的第一端200通过与开关部件13的两个触点端中的一个电连接，从而连通馈电端子10，第二端201通过与开关部件13的两个触点端中的另一个电连接，从而连通接地端子11，而在图2c中，天线20的第一端200通过与开关部件13的两个触点端中的一个电连接，从而连通接地端子11，天线20的第二端201通过与开关部件13的两个触点端中的另一个电连接，从而连通馈电端子10，此时虽然环形天线21是对称结构，但由于该通信终端2中还设置有电感22，因此，该电感22可以影响环形天线21的电场强度分布，从而整体上使天线20的电场强度分布变得不均匀。
举例来说，当开关部件13切换至图2a所示的连接方式时，用于表征该环形天线21的辐射效率的LB、HB1及HB2最大电场分布点均在图2a中的用小方格示出，而当开关部件13处于图2c所示的连接方式时，用于表征该环形天线21的辐射效率的LB、HB1及HB2最大电场分布点也均在图2c中的用小方格示出。可以看出，在这两种工作状态下，环形天线21的电场强度分布是不同的，因此，在实际中，传感器23可以检测左手状态和右手状态，在左手使用通信终端2，或者左头部接近通信终端时，将检测结果发送给控制器24，控制器24可以根据检测结果，控制开关部件13，使其切换至图2a所示的连接方式；而在右手使用通信终端2，或 者右头部接近通信终端2时，由控制器24控制开关部件13，使其切换至图2c所示的连接方式，这样即可匹配左手和右手不同的手持方式，或不同的头部接近姿势，从而通过切换连接方式，保证当左右头、手接近通信终端2时对通信终端2的影响相近，进而保证通信终端2的性能增益相近。在实际中，电感22的值是由通信终端2的工作频率决定的。
可选的，通过开关部件13的切换，电感22还可以设置于接地端子11与天线20的第一端200之间，或者与天线20的第二端201之间。具体的连接关系及其场强分布见附图2d和图2e，其工作原理分别与图2c及图2a类似，此处不再赘述。
本发明实施例提供的通信终端，包括：一个馈电端子、一个接地端子、天线和开关部件，天线为非对称结构；馈电端子与终端中的馈电电路电连接，接地端子与终端中的接地端电连接；开关部件用于在第一连接方式和第二连接方式之间切换；第一连接方式包括馈电端子与天线的第一端电连接，接地端子与天线的第二端电连接；第二连接方式包括接地端子与天线的第一端电连接，馈电端子与天线的第二端电连接。一个馈电端子、一个接地端子、天线和开关部件，天线为非对称结构；馈电端子与终端中的馈电电路电连接，接地端子与终端中的接地端电连接；开关部件用于在第一连接方式和第二连接方式之间切换；第一连接方式包括馈电端子与天线的第一端电连接，接地端子与天线的第二端电连接；第二连接方式包括接地端子与天线的第一端电连接，馈电端子与天线的第二端电连接。该通信终端只包括一个馈电端子和一个接地端子，因而可以减少焊盘数量，并且，在左右头、手接近终端时，可以通过开关部件切换不同的连接方式，使得该通信终端可以适用于左手和右手不同的手持方式，或不同的头部接近姿势，从而保证当左右头、手接近通信终端时，对通信终端的影响相近，进而保证通信终端的性能增益相近。
图3a为本发明实施例三提供的一种通信终端的结构示意图。如图3a所示，该通信终端3包括：一个馈电端子10、一个接地端子11、天线12和单刀双掷开关13。其中，天线12包括倒T型部件30、第一子天线31和第二子天线32。
具体的，馈电端子10与通信终端中的馈电电路电连接，接地端子11与通信终端中的接地端电连接。这里的通信终端可以是移动设备、用户终端、无线通信设备等，此处的馈电电路用于将终端发射机生成的发射信号处理后提供给通信终端3，以及在通信终端3接收信号之后，将接收信号处理后传送至终端的接收机中。
倒T型部件30包括横杆和垂直腿；倒T型部件30的垂直腿与馈电端子10电连接；第一子天线31和第二子天线32分别设置在垂直腿的两侧；单刀双掷开关13的固定端与接地端子11电连接；单刀双掷开关13的第一触点端130与第一子天线31电连接，第二触点端131与第二子天线32电连接。
图3b为本发明实施例三提供的一种通信终端的结构示意图，与图3a相比，该单刀双掷开关13为另一种连接方式。由于第一子天线31与第二子天线32相对于倒T型部件30的垂直腿相向设置，因此，当单刀双掷开关13处于图3a所示的状态时，第一子天线31被接通于馈电端子10和接地端子11之间，由于该第一子天线31是设置在左侧的，因此在实际中，更适用于一般的左手使用通信终端或左头部接近通信终端的习惯，因为此时除大拇指外的四指在右侧，所以对该通信终端3的影响较小；当单刀双掷开关13为图3b所示的连接方式时，第二子天线32被接通于馈电端子10和接地端子11之间，由于该第二子天线32是设置在左侧的，因此在实际中，更适用于一般的右手使用通信终端或右头部接近通信终端的习惯，因为此时除大拇指外的四指在左侧，所以对该通信终端3的影响较小，如此便可通过单刀双掷开关13的不同连接方式，即切换子天线的下地腿的方式，使得该通信终端3可以适用于左手和右手不同的手持方式，或不同的头部接近姿势，从而保证当左右头、手接近通信终端3时，对通信终端3的影响相近，进而保证通信终端3的性能增益相近。
可选的，如图3a所示，第一子天线31可以为一沿与横杆平行且远离第二子天线32的方向设置一段距离，并经两次弯折后与单刀双掷开关13的第一触点端130的电连接的金属导线，第二子天线32可以为一沿与横杆平行且远离第一子天线31的方向设置一段距离，并经两次弯折后与单刀双掷开关13的第二触点端131的电连接的金属导线。由于第一子天线 31中与倒T型部件30的横杆平行的金属导线，与该横杆是平行关系，因此，这相当于形成了一个电容，而构成第一子天线31的金属导线中的弯折部分则相当于形成了电感，因此，这个电容和电感即可形成谐振，从而实现第一子天线30对电磁波的辐射。对于第二子天线32，其原理类似。以第一子天线31为例，由于第一子天线31中与横杆平行的金属导线，到该横杆之间的垂直距离会影响上述电容的容抗，因而通常可以根据通信终端3的工作频率确定上述垂直距离。同理，第二子天线32的原理类似，其与横杆平行的金属导线到该横杆之间的垂直距离也可以根据通信终端3的工作频率确定。需要说明的是，图3a和图3b中，第一子天线31和第二子天线32的结构仅为示例，在实际应用中，上述金属导线的弯折次数，以及上述到横杆之间的垂直距离等，它们均可以根据通信终端3的工作频率确定。此外，该第一子天线31和第二子天线32可以对称地，或不对称地设置于倒T型部件30的垂直腿的两侧。
可选的，该通信终端3还可以包括第一电感34，该第一电感34设置于第一子天线31与第一触点端130之间，该第一电感34的作用与第一子天线31本身的电感作用类似，其实际值可以根据通信终端3的工作频率确定。
可选的，该通信终端3还可以包括第二电感35，该第二电感35设置于第二子天线32与第二触点端131之间，该第二电感35的作用与第二子天线32本身的电感作用类似，其实际值可以根据通信终端3的工作频率确定。
可选的，该通信终端3还可以包括传感器36和控制器37。其中，传感器36用于检测左手状态和右手状态；控制器37分别与传感器36和单刀双掷开关13连接，用于根据传感器36的检测结果，控制单刀双掷开关13切换至与检测结果相匹配的连接方式。在图3a和图3b中未示出，其具体连接与图2a类似，此处不再赘述。
图3c为左手使用本发明实施例三提供的通信终端时的性能示意图，图3d为右手使用本发明实施例三提供的通信终端时的性能示意图。其中，横轴表示频率，纵轴表示通信终端3的性能增益，实线表示单刀双掷开关13处于图3a所示状态时的性能增益，虚线表示单刀双掷开关13处于图3b 所示状态时的性能增益。可以看出，在894兆赫兹至2190兆赫兹之间，即在全球移动通信系统(Global System for Mobile communication，简称GSM)和长期演进技术(Long Term Evolution，简称LTE)频段，左手和右手使用通信终端3时的性能均接近。
本发明实施例提供的通信终端，包括：一个馈电端子、一个接地端子、天线和单刀双掷开关，天线包括倒T型部件、第一子天线和第二子天线；馈电端子与通信终端中的馈电电路电连接，接地端子与通信终端中的接地端电连接；倒T型部件的垂直腿与馈电端子电连接；第一子天线和第二子天线分别设置在垂直腿的两侧；单刀双掷开关的固定端与接地端子电连接；单刀双掷开关的第一触点端与第一子天线电连接，第二触点端与第二子天线电连接。该通信终端只包括一个馈电端子和一个接地端子，因而可以减少焊盘数量，并且，采用本发明实施例提供的通信终端，可以适用于左手和右手不同的手持方式或者不同的头部接近姿势，从而保证当左右头、手接近通信终端时，对通信终端的影响相近，进而保证通信终端的性能增益相近。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (9)

  1. 一种通信终端，其特征在于，包括：
    一个馈电端子、一个接地端子、天线和开关部件，所述天线为非对称结构；
    所述馈电端子与所述通信终端中的馈电电路电连接，所述接地端子与所述通信终端中的接地端电连接；
    所述开关部件用于在第一连接方式和第二连接方式之间切换；
    所述第一连接方式包括所述馈电端子与所述天线的第一端电连接，所述接地端子与所述天线的第二端电连接；
    所述第二连接方式包括所述接地端子与所述天线的第一端电连接，所述馈电端子与所述天线的第二端电连接。
  2. 根据权利要求1所述的通信终端，其特征在于，所述天线为非对称结构的环形天线。
  3. 根据权利要求1所述的通信终端，其特征在于，所述天线包括对称结构的环形天线和电感；
    所述第一连接方式还包括所述电感设置于所述馈电端子与所述天线的第一端之间；
    所述第二连接方式还包括所述电感设置于所述馈电端子与所述天线的第二端之间。
  4. 根据权利要求1所述的通信终端，其特征在于，所述天线包括对称结构的环形天线和电感；
    所述第一连接方式还包括所述电感设置于所述接地端子与所述天线的第一端之间；
    所述第二连接方式还包括所述电感设置于所述接地端子与所述天线的第二端之间。
  5. 根据权利要求1-4任一项所述的通信终端，其特征在于，所述通信终端还包括传感器和控制器；
    所述传感器用于检测左手状态和右手状态；
    所述控制器分别与所述传感器和所述开关部件连接，用于根据所述传感器的检测结果控制所述开关部件切换至与所述检测结果相匹配的连接 方式。
  6. 一种通信终端，其特征在于，包括：
    一个馈电端子、一个接地端子、天线和单刀双掷开关，所述天线包括倒T型部件、第一子天线和第二子天线；所述倒T型部件包括横杆和垂直腿；
    所述馈电端子与所述通信终端中的馈电电路电连接，所述接地端子与所述通信终端中的接地端电连接；
    所述倒T型部件的垂直腿与所述馈电端子电连接；
    所述第一子天线和所述第二子天线分别设置在所述垂直腿的两侧；
    所述单刀双掷开关的固定端与所述接地端子电连接；所述单刀双掷开关的第一触点端与所述第一子天线电连接，第二触点端与所述第二子天线电连接。
  7. 根据权利要求6所述的通信终端，其特征在于，所述天线还包括第一电感；
    所述第一电感设置于所述第一子天线与所述第一触点端之间。
  8. 根据权利要求6或7所述的通信终端，其特征在于，所述天线还包括第二电感；
    所述第二电感设置于所述第二子天线与所述第二触点端之间。
  9. 根据权利要求6-8任一项所述的通信终端，其特征在于，所述通信终端还包括传感器和控制器；
    所述传感器用于检测左手状态和右手状态；
    所述控制器分别与所述传感器和所述单刀双掷开关连接，用于根据所述传感器的检测结果控制所述单刀双掷开关切换至与所述检测结果相匹配的连接方式。
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