WO2017201978A1 - 射频发射电路、电路匹配方法及计算机存储介质 - Google Patents

射频发射电路、电路匹配方法及计算机存储介质 Download PDF

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Publication number
WO2017201978A1
WO2017201978A1 PCT/CN2016/105376 CN2016105376W WO2017201978A1 WO 2017201978 A1 WO2017201978 A1 WO 2017201978A1 CN 2016105376 W CN2016105376 W CN 2016105376W WO 2017201978 A1 WO2017201978 A1 WO 2017201978A1
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Prior art keywords
preset
matching
transmit power
path
matching path
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English (en)
French (fr)
Inventor
平鹏飞
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ZTE Corp
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ZTE Corp
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Priority to US16/304,320 priority Critical patent/US10707906B2/en
Publication of WO2017201978A1 publication Critical patent/WO2017201978A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/005—Details 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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—Details 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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H04B1/006—Details 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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0483—Transmitters with multiple parallel paths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/14—Monitoring; Testing of transmitters for calibration of the whole transmission and reception path, e.g. self-test loop-back

Definitions

  • the present invention relates to radio frequency technology in the field of communications, and in particular to a radio frequency transmitting circuit, a circuit matching method, and a computer storage medium.
  • the transmitting circuit of a radio frequency circuit is generally composed of a transceiver, a power amplifier, a duplex or a filter, an antenna, and some matching circuits. After the entire circuit layout is completed, the entire RF circuit achieves the best RF performance at the target power by debugging the matching circuit between the transceiver and the power amplifier and the power amplifier and the duplexer or filter.
  • Embodiments of the present invention provide a radio frequency transmitting circuit and a circuit matching method, and it is desirable to reduce power consumption of the entire radio frequency circuit.
  • An embodiment of the present invention provides a radio frequency transmitting circuit, where the radio frequency transmitting circuit includes: a control unit, at least one transmitting path unit, and the transmitting path unit includes: at least one preset matching path, where the preset transmitting power is pre-stored in the control unit Correspondence with a preset matching path, wherein
  • the control unit is configured to determine, according to a preset correspondence between the preset transmit power and the preset matching path, a preset matching path corresponding to the received transmit power as a first matching path, and control the first matching path. jobs.
  • An embodiment of the present invention provides a circuit matching method, where the method includes:
  • the preset matching path corresponding to the received transmit power is a first matching path, and the first matching path is controlled to operate.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the foregoing circuit matching method.
  • An embodiment of the present invention provides a radio frequency transmitting circuit, a circuit matching method, and a computer storage medium.
  • the radio frequency transmitting circuit includes: a control unit, at least one transmitting path unit, and the transmitting path unit includes: at least one preset matching path, Corresponding relationship between the preset transmit power and the preset matching path is pre-stored in the control unit, wherein the control unit determines and receives the received transmit power according to the corresponding relationship between the preset transmit power and the preset matching path.
  • the corresponding preset matching path is a first matching path, and the first matching path is controlled to operate.
  • the radio frequency transmitting circuit and the circuit matching method provided by the embodiments of the present invention can dynamically adjust the matching circuit according to the current transmitting power, thereby achieving better impedance matching, so that the transmitting circuit reduces the impedance loss when the emission index reaches the standard.
  • the power consumption consumed by the device reduces the power consumption required by the terminal transmitting circuit, reduces the power consumption of the entire RF circuit, thereby reducing the power consumption of the terminal and prolonging the standby time of the terminal.
  • FIG. 1 is a schematic structural diagram 1 of a radio frequency transmitting circuit according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram 1 of a transmission path unit according to an embodiment of the present invention.
  • FIG. 3 is a second schematic structural diagram of a transmission path unit according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram 2 of a radio frequency transmitting circuit according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram 3 of a radio frequency transmitting circuit according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram 4 of a radio frequency transmitting circuit according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram 5 of a radio frequency transmitting circuit according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram 1 of a T-type adjustable matching network according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram 2 of a T-type adjustable matching network according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart of a circuit matching method according to an embodiment of the present invention.
  • the transmit circuitry of a radio frequency circuit consists of a transceiver, a power amplifier, a duplex or filter, an antenna, and some matching circuitry.
  • the position of the transceiver, power amplifier, duplex or filter, and antenna will be fixed.
  • the matching between the connected devices needs to be adjusted to optimize the performance of the transmission.
  • the relationship between the transmit power, the ACLR and the current of the power amplifier includes: the ACLR is inversely proportional to the current of the power amplifier under the same transmit power; the same RF circuit is determined by the matching circuit and the transmit power is different. The lower the transmit power, the smaller the ACLR and current will be.
  • the debug RF circuit adjusts the power amplifier current and ACLR at the maximum transmit power specified by the standard, and the transmit power of the terminal device in actual operation is dynamic, and most of the time is less than the maximum transmit power. At this time, the ACLR is smaller than the ACLR at the maximum transmit power.
  • the matching circuit is fixed after the debugging is completed, so the ACLR cannot be made worse by the matching debugging again, so that the operating current of the power amplifier continues to be small.
  • the radio frequency transmitting circuit provided by the embodiment of the present invention can adjust the matching again after the matching circuit is completed, so that the ACLR is the same as the ACLR when the maximum transmitting power is used, so that the power current of the power amplifier is reduced again, thereby achieving the purpose of reducing power consumption. .
  • An embodiment of the present invention provides a radio frequency transmitting circuit 1, as shown in FIG.
  • the circuit 1 includes: a control unit 10, at least one transmission path unit 11, the transmission path unit 11 includes: at least one preset matching path, and the corresponding relationship between the preset transmission power and the preset matching path is pre-stored in the control unit 10, wherein ,
  • the control unit 10 is configured to determine, according to a preset correspondence between the preset transmit power and the preset matching path, that the preset matching path corresponding to the received transmit power is the first matching path, and the first matching is controlled. Path work.
  • control unit 10 may be an application processor (AP), a central processing unit (CPU), a digital signal processor (DSP), or a digital signal processor (DSP).
  • a processor such as a Field Programmable Gate Array (FPGA) or a Micro Central Processing Unit (MCU).
  • the control unit 10 may also correspond to a processing circuit.
  • the processing circuit can include an application specific integrated circuit.
  • the transmission path unit 11 includes: a first tunable matching network module 110, a filtering module 111 connected to the first tunable matching network module 110, and the filtering module 111. Connected matching network module 112;
  • the first adjustable matching network module 111 includes: at least one first preset matching path, the at least one first preset matching path includes: a first end and a second end, the first end and the control The unit is connected, and the second end is connected to the filtering module.
  • the transmission path unit 11 includes: a second adjustable matching network module 113, a filtering module 111 connected to the second adjustable matching network module 113, and the filtering module 111. Connected third adjustable matching network module 114;
  • the second adjustable matching network module 113 includes: at least one second preset matching path, where the at least one second preset matching path includes: a third end and a fourth end, the third end and the control a unit connection, wherein the fourth end is connected to the filtering module;
  • the third adjustable matching network module 114 includes: at least one third preset matching path,
  • the at least one second preset matching path includes: a fifth end and a sixth end, wherein the fifth end is connected to the filtering module, and the sixth end is connected to the switching unit.
  • the first adjustable matching network module 110 is dual L, ⁇ type, or T type.
  • the second adjustable matching network module 113 is dual L, ⁇ type, or T type;
  • the third adjustable matching network module 114 is a double L, a ⁇ type, or a T type.
  • control unit 10 is configured to determine, in a correspondence between the preset preset transmit power and the preset matching path, that the preset transmit power that is the smallest difference from the received transmit power is the first And a first transmit power corresponding to the received transmit power, and the preset matching path corresponding to the first transmit power is a first matching path, and the first matching path is controlled to operate.
  • the radio frequency transmitting circuit includes: a switch unit 12 configured to select different working frequency bands and power detection.
  • the radio frequency transmitting circuit 1 may include a radio frequency chip 14, a power amplifier unit 13, a switch unit 12, a control unit 10, an antenna, and one or more transmission paths having the same structure.
  • Unit 11 the operation principle of each of the plurality of transmission path units 11 is the same as that of one transmission path unit 11.
  • the radio frequency transmitting circuit 1 includes a transmitting path unit 11, and the transmitting path unit 11 may include an adjustable matching network module, a duplexer/filter, and a matching network.
  • the filtering module 111 of the transmission path unit 11 is specifically a duplexer/filter.
  • the input end of the adjustable matching network module is connected to the output end of the power amplifier unit 13, and the output end of the adjustable matching network module is connected to the input end of the duplexer/filter, and the adjustable matching network is connected.
  • the control end of the module is connected to the control unit 10, and the adjustable matching network module is used to match the output load of the power amplifier unit.
  • the tunable matching network module can be composed of an adjustable capacitor and an adjustable inductor.
  • the formula is any one of a T-type, a double-L, and a ⁇ -type consisting of a capacitor and an inductor arrangement.
  • it is composed of a plurality of T-type matching circuits, and one of the switches SW1 and SW2 is selected. Path work.
  • the input end of the matching network module is connected to the output end of the duplexer/filter, the output end of the matching network module is connected to the switch unit 12, and the control end of the matching network module is connected to the control unit 10. .
  • the function of the matching network module is to complete the convergence of the frequency points in the frequency band of the frequency band.
  • the matching network module is used to match the duplexer/filter and switching unit.
  • the switch unit 12 is configured to select different working frequency bands, and one working frequency band corresponds to one matching path, that is, selects different matching paths, and the switch unit 12 can also have a power detecting function, and the power monitoring point is compared with the power sampling point of the control unit 10. connection.
  • the control unit 10 can be composed of a memory chip and a micro processor; wherein the storage chip is used for storing the matching after the debugging is completed, the microprocessor uses the sampling of the output power and controls the switch in the adjustable matching network module.
  • the T-type matching circuit of FIG. 8 illustrates the working process of the radio frequency transmitting circuit.
  • the transmitting power of the terminal is adjusted.
  • the matching path of the adjustable matching network is debugged.
  • the matching path 1 is that the SW1 is closed to the contact a1, and the SW2 is closed to the path formed by the contact a2, and the capacitors C1, C2 and the inductor L1 in the matching path 1 are debugged, so that the current and the spurs are optimal, and this will be the case.
  • the matching of each capacitor and inductor is recorded, that is, the matching path 1 after the debugging is saved; then the next transmission power is adjusted, for example, the transmission power is 15 dBm, and the matching channel 2 of the tunable matching network is debugged again, and the matching channel 2 is closed by SW1.
  • SW2 closes the path formed by the contact b2, debugs the capacitors C3, C4, and the inductor L2 in the matching path 2, so that the current and the spurs are optimized, and the capacitance of the matching path 2 is recorded again at this time.
  • the matching of the inductor that is, the matching channel 2 after the debugging is saved; according to this method, the next transmitting power is debugged again, for example, the transmitting power is 10 dBm, and the matching of the adjustable matching network is debugged.
  • Lane 3 the matching path 3 is SW1 closed to the contact d1, SW2 is closed to the contact d2
  • the formed path is debugged to match the capacitors C5, C6, and the inductor L3 in the path 3, so that the current and the spurs are optimized, and the matching of the respective capacitors and inductors at this time is recorded, that is, the matching path after the debugging is saved. And recording the correspondence between the respective transmit powers and the respective matching paths in the memory in the control unit.
  • each of the plurality of transmission path units can determine the matching path in the manner described above, so that a plurality of different transmission powers and corresponding matching paths can be determined.
  • the correspondence between the respective transmit powers and the respective matching paths is recorded in a memory in the control unit. Then, during operation of the radio frequency transmitting circuit, the control unit selects a corresponding contact according to the received transmit power.
  • the control unit 10 if the control unit 10 detects that the currently received transmit power is less than 20 dBm and is greater than 15 dBm, the control unit 10 queries the correspondence between the pre-stored transmit power and each matching path to determine the current
  • the matching path of the transmit power is the matching path in the adjustable matching network when the debugging power is 20dBm, as shown in the matching path 1 in FIG. 8, and then the SW1 in the adjustable matching network is closed to the contact a1, and the SW2 is closed to the touch.
  • the matching path 1 starts to work; when it is detected that the currently received transmit power is less than 15 dBm and greater than 10 dBm, the control unit 10 queries the correspondence between the pre-stored transmit power and each matching path to determine the matching of the current transmit power.
  • the path is the matching path in the adjustable matching network when the debugging power is 15dBm, such as the matching path 2 shown in FIG. 8, and then the SW1 in the adjustable matching network is closed to the contacts b1 and SW2 to the contact b2, and the matching is performed.
  • Path 2 starts to work; in the same way, when the currently received transmit power is less than 10 dBm and greater than 5 dBm, the selection is made by SW1 and SW2.
  • the path 3 starts to work, that is, the SW1 in the control adjustable matching network is closed to the contact d1, the SW2 is closed to the contact d2, and so on, according to the received transmit power, the corresponding relationship between the pre-stored transmit power and the matching path is determined.
  • the difference from the received transmit power The small transmit power is the first transmit power, and the first transmit power is greater than the received transmit power, and the matching path corresponding to the first transmit power is the first matching path, and the first matching path is controlled to start working, thereby achieving different receiving
  • the dynamics of the matching under transmit power are dynamically adjustable.
  • the radio frequency transmitting circuit 1 including a transmitting path unit 11, which may include an adjustable matching network module, a duplexer/filter, and an adjustable
  • the matching network module here, the filtering module 111 of the transmission path unit 11 is specifically a duplexer/filter.
  • the transmission path unit 11 includes two adjustable matching network modules, and the input end of the first adjustable matching network module is connected to the output end of the power amplifier unit 13, and the first adjustable matching network module The output is connected to the input of the duplexer/filter, and the output of the duplexer/filter is connected to the input of the second adjustable matching network module.
  • the tunable matching network module may be composed of an adjustable capacitor and a tunable inductor, and may be in the form of any one of a T-type, a double-L, and a ⁇ -type composed of a capacitor and an inductor arrangement, for example, such as As shown in FIG. 8, it is composed of a plurality of T-type matching circuits, and one of the switches SW1 and SW2 selects one of the paths to operate.
  • the network module shown in Figure 9 can have multiple matching components.
  • the circuit structure of the two adjustable matching network modules in the transmitting path unit 11 is the same, so that the effective gain brought by the adjustable matching network module connected to the duplexer/filter output end can be increased, that is, the adjustment becomes more flexible.
  • the antenna and the duplexer/filter can be matched by the matching change of the tunable matching network module connected to the duplexer/filter input. The output that gives the power the most efficiency.
  • the two adjustable matching network modules in the RF transmitting circuit can be composed of multiple matching channels.
  • each matching channel represents a transmitting matching path under different transmission power levels, and during the operation, the detection is transmitted.
  • the transmit power of the circuit directly selects the optimal transmit path matching path, thereby achieving dynamic adjustment of the matching under different transmit powers.
  • the switch unit 12 is configured to select different working frequency bands, and the switch unit 12 can also have work
  • the rate detection function has its power monitoring point connected to the power sampling point of the control unit 10.
  • the control unit 10 can be composed of a memory chip and a micro processor; wherein the storage chip is used for storing the matching after the debugging is completed, the microprocessor uses the sampling of the output power and controls the switch in the adjustable matching network module.
  • the matching circuit of FIG. 9 the working process of the radio frequency transmitting circuit is illustrated by the matching circuit of FIG. 9.
  • the matching path 1 of the adjustable matching network is debugged under the transmitting power of 20 dBm, and the matching path 1 is SW11, SW12, SW13 respectively.
  • Select a contact closure such as SW11 is closed to contact a11
  • SW12 is closed to contact a12
  • SW13 is closed to contact a13
  • matching debugging is performed to match C11, L11, C14 to the best match, and the position of the contact is recorded at this time.
  • the matching path 1 after the debugging is saved; at the transmitting power of 15 dBm, the matching path 2 is SW11, SW12, and SW13 corresponding to the selection contacts b11, b12, and b13, that is, the SW11 is closed to the contact b11, and the SW12 is closed to the contact.
  • B12, SW13 is closed to the contact b13, the debugging will match C12, L12, C15 to the best match, and the position of the contact at this time is recorded, that is, the matching path 2 after the debugging is saved; the next power touch is recorded in the same manner.
  • control unit determines, according to the received transmit power, the transmit power with the smallest difference between the received transmit power and the received transmit power as the first transmit power, and the first transmit power.
  • the matching channel corresponding to the first transmit power is the first matching path, and the first matching path is controlled to start working, thereby realizing dynamic matching of matching under different transmitting powers.
  • the switch unit in the radio frequency transmitting circuit may have the functions of switch control and power detection, and may also have only the function of the switch, and the function of the power detection is implemented as a separate module. That is, the power detection unit, the function of the switch unit can also It is realized by a splitter and a power detecting unit.
  • the radio frequency transmitting circuit uses the debug matching channel when receiving the transmitting power, so that the matching fast switching can be achieved, so that the radio frequency transmitting circuit can be dynamically adjusted according to the change of the transmitting power, and the transmitting circuit is In the case where the emission index is up to standard, the power consumption is minimized, thereby reducing the power consumption of the entire RF circuit.
  • An embodiment of the present invention provides a circuit matching method. As shown in FIG. 10, the method is applied to the foregoing radio frequency transmitting circuit, and the method may include:
  • Step 1001 A radio frequency transmitting circuit receives a transmit power of a terminal.
  • Step 1002 The radio frequency transmitting circuit determines, according to the preset relationship between the preset transmit power and the preset matching path, that the preset matching path corresponding to the received transmit power is the first matching path, and controls the first matching path to work. .
  • the debugging stage of the radio frequency transmitting circuit determining a matching path corresponding to the preset circuit according to the preset transmit power, and then storing the corresponding relationship between each preset transmit power and each preset matching path in the working process.
  • the optimal transmit path matching path is directly selected by detecting the transmit power of the transmit circuit, thereby achieving dynamic adjustment of matching under different transmit powers.
  • the radio frequency transmitting circuit determines, according to the preset transmit power, a matching path corresponding to the preset circuit, which may include:
  • the RF transmitting circuit receives the first preset transmit power, and adjusts the capacitance and/or the inductance of the first preset matching path. When the current and the spur of the first preset matching path are optimal, the first pre-preservation is saved. Setting a correspondence between the transmit power and the first preset matching path;
  • the T-type matching circuit of FIG. 8 illustrates the working process of the radio frequency transmitting circuit.
  • the transmitting power of the terminal is adjusted.
  • the matching path of the adjustable matching network is debugged.
  • the matching path 1 is that the SW1 is closed to the contact a1, and the SW2 is closed to the path formed by the contact a2, and the capacitors C1, C2 and the inductor L1 in the matching path 1 are debugged, so that the current and the spurs are optimal, and this will be the case.
  • the matching of each capacitor and inductor is recorded, that is, the matching path 1 after the debugging is saved; then the next transmission power is adjusted, for example, the transmission power is 15 dBm, and the matching channel 2 of the tunable matching network is debugged again, and the matching channel 2 is closed by SW1.
  • SW2 closes the path formed by the contact b2, debugs the capacitors C3, C4, and the inductor L2 in the matching path 2, so that the current and the spurs are optimized, and the capacitance of the matching path 2 is recorded again at this time.
  • the matching of the inductor that is, the matching channel 2 after the debugging is saved; according to this method, the next transmitting power is debugged again, for example, the transmitting power is 10 dBm, and the matching of the adjustable matching network is debugged.
  • Lane 3 the matching path 3 is SW1 closed to the contact d1, SW2 is closed to the path formed by the contact d2, and the capacitors C5, C6, and the inductor L3 in the matching path 3 are debugged, so that the current and the spurs are optimal,
  • the matching of the respective capacitors and inductors is recorded, that is, the debug matching channel 3 is saved, and the correspondence between the respective transmit powers and the respective matching paths is recorded in the memory in the control unit.
  • the value of the preset transmit power in the embodiment of the present invention is not limited to the above-mentioned 20 dBm, 15 dBm, and 10, and may be other values, such as 23 dBm, 18 dBm, etc., which are not specifically limited in this embodiment of the present invention. .
  • the radio frequency transmitting circuit determines, in a correspondence between the preset preset transmit power and the preset matching path, that the preset transmit power that is the smallest difference from the received transmit power is the first transmit power, and The first transmit power is greater than the received transmit power, the first The preset matching path corresponding to the transmit power is a first matching path, and the first matching path is controlled to start working.
  • the radio frequency transmitting circuit if the radio frequency transmitting circuit detects that the currently received transmitting power is less than 20 dBm and greater than 15 dBm through the switch, the radio frequency transmitting circuit queries the corresponding relationship between the pre-stored transmitting power and each matching path to determine the current transmission.
  • the matching path of the power is the matching path in the adjustable matching network when the debugging power is 20dBm, as shown in the matching path 1 in FIG. 8, and then the SW1 in the adjustable matching network is closed to the contact a1, and the SW2 is closed to the contact.
  • the matching path 1 starts to work; when detecting that the currently received transmitting power is less than 15 dBm and greater than 10 dBm, the radio frequency transmitting circuit queries the corresponding relationship between the pre-stored transmitting power and each matching path, and determines that the matching path of the current transmitting power is When the debugging power is 15dBm, it corresponds to the matching path in the adjustable matching network, as shown in the matching channel 2 in Figure 8, and then controls the SW1 in the adjustable matching network to close to the contacts b1 and SW2 to the contact b2, and the matching path 2 Start working; in the same way, when the currently received transmit power is less than 10dBm and greater than 5dBm, select through SW1 and SW2.
  • the matching path 3 starts to work, that is, the SW1 in the control adjustable matching network is closed to the contact d1, the SW2 is closed to the contact d2, and so on, according to the received transmission power, in the corresponding relationship between the pre-stored transmission power and the matching path, Thereby, dynamic adaptation of matching at different transmit powers is achieved.
  • the circuit matching method provided by the embodiment of the invention uses the debug matching channel when receiving the transmit power, so that the fast switching of the matching can be achieved, so that the radio frequency transmitting circuit can be dynamically adjusted according to the change of the transmitting power, and the transmitting circuit is In the case where the emission index is up to standard, the power consumption is minimized, thereby reducing the power consumption of the entire RF circuit.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used in at least one of the foregoing circuit matching methods, for example, as shown in FIG. The method shown.
  • the computer storage medium may be a storage medium such as a random storage medium RAM, a read-only storage medium ROM or a flash memory.
  • the executable instructions stored in the computer storage medium of the embodiment include at least the instructions of the control unit in the foregoing embodiment for performing the corresponding operations.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
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Abstract

本发明实施例公开了一种射频发射电路和电路匹配方法，所述射频发射电路包括：控制单元、至少一个发射通路单元，发射通路单元包括：至少一个预设匹配通路，所述控制单元中预先存储预设发射功率与预设匹配通路的对应关系，其中，所述控制单元，用于根据预先存储的预设发射功率与预设匹配通路的对应关系，确定与接收到的发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作。本发明实施例还提供一种计算机存储介质。

Description

射频发射电路、电路匹配方法及计算机存储介质 技术领域
本发明涉及通信领域的射频技术，尤其涉及一种射频发射电路、电路匹配方法及计算机存储介质。
背景技术
射频电路的发射电路一般是由收发器、功率放大器、双工或者滤波器、天线和一些匹配电路组成。在整个电路布局完成后，通过调试收发器与功率放大器以及功率放大器与双工器或者滤波器之间的匹配电路使得整个射频电路在目标功率下达到最好的射频性能。
然而终端设备在实际使用时，依然存在着功耗大的问题。
发明内容
本发明实施例提供一种射频发射电路和电路匹配方法，期望减小整个射频电路的功耗。
本发明实施例的技术方案是这样实现的：
本发明实施例提供一种射频发射电路，所述射频发射电路包括：控制单元、至少一个发射通路单元，发射通路单元包括：至少一个预设匹配通路，所述控制单元中预先存储预设发射功率与预设匹配通路的对应关系，其中，
所述控制单元，配置为根据预先存储的预设发射功率与预设匹配通路的对应关系，确定与接收到的发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作。
本发明实施例提供一种电路匹配方法，所述方法包括：
根据预先存储的预设发射功率与预设匹配通路的对应关系，确定与接 收到的发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行前述电路匹配方法。
本发明实施例提供了一种射频发射电路、电路匹配方法及计算机存储介质，所述射频发射电路包括：控制单元、至少一个发射通路单元，发射通路单元包括：至少一个预设匹配通路，所述控制单元中预先存储预设发射功率与预设匹配通路的对应关系，其中，所述控制单元，通过根据预先存储的预设发射功率与预设匹配通路的对应关系，确定与接收到的发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作。本发明实施例提供的射频发射电路和电路匹配方法，可根据当前时刻的发射功率，动态的调整匹配电路，从而达到更好的阻抗匹配，使得发射电路在发射指标达标的情况下，减少阻抗失配所消耗的功耗，降低终端发射电路所需的功耗，减小整个射频电路的功耗，从而减少终端的功耗，延长终端的待机时长。
附图说明
图1为本发明实施例提供的射频发射电路结构示意图一；
图2为本发明实施例提供的发射通路单元结构示意图一；
图3为本发明实施例提供的发射通路单元结构示意图二；
图4为本发明实施例提供的射频发射电路结构示意图二；
图5为本发明实施例提供的射频发射电路结构示意图三；
图6为本发明实施例提供的射频发射电路结构示意图四；
图7为本发明实施例提供的射频发射电路结构示意图五；
图8为本发明实施例提供的T型可调匹配网络示意图一；
图9为本发明实施例提供的T型可调匹配网络示意图二；
图10为本发明实施例提供的电路匹配方法流程示意图。
具体实施方式
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，应当理解，以下所说明的优选实施例仅用于说明和解释本发明，并不用于限定本发明。
通常，射频电路的发射电路由收发器、功率放大器、双工或者滤波器、天线和一些匹配电路组成。当整个电路在布局完成时，收发器、功率放大器、双工或者滤波器、天线的位置就会固定，这时需要调节连接各个器件之间的匹配使得发射的各个性能达到最优。在这些射频性能中，比较关注发射功率以及此功率下对应的ACLR功率放大器电流。
其中，发射功率、ACLR与功率放大器的电流之间的关系包括：同一射频电路在相同发射功率下，ACLR与功率放大器的电流成反比；同一射频电路在匹配电路确定下而发射功率不同的情况下，发射功率越低，ACLR与电流都会变小。
在实际的工作中，调试射频电路是在标准规定的最大发射功率下调节功率放大器电流和ACLR，而终端设备在实际的工作中的发射功率是动态的，绝大部分时间是小于最大发射功率，此时ACLR比最大发射功率时的ACLR要小。现有技术中，匹配电路在调试完成后是固定不变的，所以不能再次通过匹配调试使得ACLR变差一点，使得功率放大器的工作电流继续较小。本发明实施例提供的射频发射电路，在匹配电路在调试完成后，能够再次调节匹配使ACLR与最大发射功率时的ACLR一样，使得功率放大器的功率电流再次减少，从而，达到减功耗的目的。
本发明实施例提供一种射频发射电路1，如图1所示，所述射频发射电 路1包括：控制单元10、至少一个发射通路单元11，发射通路单元11包括：至少一个预设匹配通路，所述控制单元10中预先存储预设发射功率与预设匹配通路的对应关系，其中，
所述控制单元10，配置为根据预先存储的预设发射功率与预设匹配通路的对应关系，确定与接收到的发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作。
在本实施例中所述控制单元10可为终端中的应用处理器AP(AP，Application Processor)、中央处理器(CPU，Central Processing Unit)、数字信号处理器(DSP，Digital Signal Processor)或可编程门阵列(FPGA，Field Programmable Gate Array)或微处理器(MCU，Micro Central processing Unit)等处理器。所述控制单元10还可对应于处理电路。所述处理电路可包括专用集成电路。
可选地，如图2所示，所述发射通路单元11包括：第一可调匹配网络模块110，与所述第一可调匹配网络模块110连接的滤波模块111，与所述滤波模块111连接的匹配网络模块112；
所述第一可调匹配网络模块111包括：至少一个第一预设匹配通路，所述至少一个第一预设匹配通路包括：第一端和第二端，所述第一端与所述控制单元连接，所述第二端与所述滤波模块连接。
可选地，如图3所示，所述发射通路单元11包括：第二可调匹配网络模块113，与所述第二可调匹配网络模块113连接的滤波模块111、与所述滤波模块111连接的第三可调匹配网络模块114；
所述第二可调匹配网络模块113包括：至少一个第二预设匹配通路，所述至少一个第二预设匹配通路包括：第三端和第四端，所述第三端与所述控制单元连接，所述第四端与所述滤波模块连接；
所述第三可调匹配网络模块114包括：至少一个第三预设匹配通路， 所述至少一个第二预设匹配通路包括：第五端和第六端，所述第五端与所述滤波模块连接，所述第六端与开关单元连接。
可选的，所述第一可调匹配网络模块110为双L、Π型、或者T型。
可选的，所述第二可调匹配网络模块113为双L、Π型、或者T型；
可选的，所述第三可调匹配网络模块114为双L、Π型、或者T型。
可选地，所述控制单元10，具体用于在预先存储的预设发射功率与预设匹配通路的对应关系中，确定与所述接收到的发射功率差值最小的预设发射功率为第一发射功率，且所述第一发射功率大于所述接收到的发射功率，所述第一发射功率对应的预设匹配通路为第一匹配通路，控制第一匹配通路工作。
可选地，如图4所示，所述射频发射电路包括：开关单元12，配置为选择不同的工作频段以及功率检测。
示例性的，如图5所示，本发明实施例提供的射频发射电路1可以包括射频芯片14、功率放大器单元13、开关单元12、控制单元10、天线和一个或多个结构相同的发射通路单元11，多个发射通路单元11中每一个发射通路单元11的工作原理与一个发射通路单元11的工作原理相同。
一种可能的实现方式中，如图6所示，以射频发射电路1包括一个发射通路单元11进行说明，发射通路单元11可以包括，可调匹配网络模块、双工器/滤波器、匹配网络模块，这里，发射通路单元11的滤波模块111具体为双工器/滤波器。
如图6所示，可调匹配网络模块的输入端与功率放大器单元13的输出端相连接，可调匹配网络模块的输出端与双工器/滤波器的输入端相连接，可调匹配网络模块的控制端与控制单元10相连接，可调匹配网络模块，用于对功率放大器单元的输出负载进行匹配。
可选地，可调匹配网络模块可以由可调的电容和可调电感组成，其形 式可是由电容、电感排列组成的T型、双L、Π型中的任意一种，示例性的，如图8所示，由多个T型匹配电路组成，由开关SW1、SW2选择其中一个通路工作。
如图6所示，匹配网络模块的输入端与双工器/滤波器的输出端相连接，匹配网络模块的输出端与开关单元12相连接，匹配网络模块的控制端与控制单元10相连接。匹配网络模块作用是完成对频段通带内各频点收敛性保持一致。匹配网络模块用于对双工器/滤波器和开关单元进行匹配。
开关单元12，配置为选择不同的工作频段，一个工作频段对应一个匹配通路，即选择不同的匹配通路，开关单元12还可以具有功率检测功能，其功率监测点与控制单元10的功率采样点相连接。
控制单元10，可以由存储芯片与微型处理器组成；其中，储存芯片用于储存在调试完成后的匹配，微型处理器用对输出功率的采样以及控制可调匹配网络模块中的开关。
示例性的，以图8的T型匹配电路说明射频发射电路的工作过程，在前期调试阶段，调整终端的发射功率，例如调整终端的发射功率为20dBm时，调试可调匹配网络的匹配通路1，匹配通路1为SW1闭合到触点a1，SW2闭合到触点a2所形成的通路，调试匹配通路1中的电容C1、C2、和电感L1，使得电流与杂散达到最优，将此时的各个电容、电感的匹配记录下来，即保存该调试后的匹配通路1；然后调整下一个发射功率，例如发射功率为15dBm，再次调试可调匹配网络的匹配通路2，匹配通路2为SW1闭合到触点b1，SW2闭合到触点b2所形成的通路，调试匹配通路2中的电容C3、C4、和电感L2，使得电流与杂散达到最优，并再次记录此时匹配通路2的电容、电感的匹配，即保存该调试后的匹配通路2；依照此方法再次调试下一个发射功率，例如发射功率为10dBm，调试可调匹配网络的匹配通路3，匹配通路3为SW1闭合到触点d1，SW2闭合到触点d2所形 成的通路，调试匹配通路3中的电容C5、C6、和电感L3，使得电流与杂散达到最优，将此时的各个电容、电感的匹配记录下来，即保存该调试后的匹配通路3，并将各个发射功率与各个匹配通路的对应关系记录在控制单元中内的存储器中。
需要说明的是，图8中的T型匹配电路中可以存储三个匹配通路，因此，采用图8中的T型匹配电路的一个发射通路单元可以存储三个匹配通路，当多个发射通路单元采用图8中的T型匹配电路，对多个发射通路单元中的每一个发射通路单元可以采用如上所述的方式确定匹配通路，从而可以确定多个不同的发射功率及与其对应匹配通路，将各个发射功率与各个匹配通路的对应关系记录在控制单元中内的存储器中。然后在射频发射电路工作过程中，控制单元根据接收的发射功率来选择对应的触点。
射频发射电路在工作的过程中，如果控制单元10通过开关检测到当前接收的发射功率小于20dBm且大于15dBm时，控制单元10就查询预存储的发射功率与各个匹配通路的对应关系，确定当前的发射功率的匹配通路为调试功率在20dBm时对应可调匹配网络中的匹配通路，如图8所示的匹配通路1，然后控制可调匹配网络中的SW1闭合到触点a1，SW2闭合到触点a2，匹配通路1就开始工作；当检测到当前接收的发射功率小于15dBm且大于10dBm时，控制单元10就查询预存储的发射功率与各个匹配通路的对应关系，确定当前的发射功率的匹配通路为调试功率在15dBm时对应可调匹配网络中的匹配通路，如图8所示的匹配通路2，然后控制可调匹配网络中的SW1闭合到触点b1、SW2闭合到触点b2，匹配通路2开始工作；以同样的方式在当前接收的发射功率小于10dBm且大于5dBm时，通过SW1、SW2选择匹配通路3开始工作，即控制可调匹配网络中的SW1闭合到触点d1，SW2闭合到触点d2，依次类推，根据接收的发射功率在预先存储的发射功率与匹配通路的对应关系中，确定与接收到的发射功率差值最 小的发射功率为第一发射功率，且第一发射功率大于接收到的发射功率，第一发射功率对应的匹配通路为第一匹配通路，控制第一匹配通路开始工作，从而，实现在接收不同发射功率下匹配的动态可调。
一种的可能的实现方式，如图7所示，以射频发射电路1包括一个发射通路单元11进行说明，发射通路单元11可以包括，可调匹配网络模块、双工器/滤波器、可调匹配网络模块，这里，发射通路单元11的滤波模块111具体为双工器/滤波器。
如图7所示，发射通路单元11包括两个可调匹配网络模块，第一个可调匹配网络模块的输入端与功率放大器单元13的输出端相连接，第一个可调匹配网络模块的输出端与双工器/滤波器的输入端相连接，双工器/滤波器的输出端与第二个可调匹配网络模块的输入端相连接。
可选地，可调匹配网络模块可以由可调的电容和可调电感组成，其形式可是由电容、电感排列组成的T型、双L、Π型中的任意一种，示例性的，如图8所示，由多个T型匹配电路组成，由开关SW1、SW2选择其中一个通路工作。如图9所示网络模块可有多个匹配元件组成。
发射通路单元11中两个可调匹配网络模块的电路结构相同，这样，可以增加与双工器/滤波器输出端连接的可调匹配网络模块带来的有效增益，即使得调节变的更加灵活，在调节杂散与功耗的同时，同时也能兼顾与双工器/滤波器输入端连接的可调匹配网络模块的匹配变化带来的天线与双工器/滤波器之间的匹配，使得功率得到最大效率的输出。
射频发射电路中的两个可调匹配网络模块均可由多个匹配通路组成，在调试过程中，每个匹配通路都代表着不同发射功率等级下的发射匹配通路，在工作过程中，通过检测发射电路的发射功率直接选择最优的发射通路匹配通路，从而，实现在接收不同发射功率下匹配的动态可调。
开关单元12，配置为选择不同的工作频段，开关单元12还可以具有功 率检测功能，其功率监测点与控制单元10的功率采样点相连接。
控制单元10，可以由存储芯片与微型处理器组成；其中，储存芯片用于储存在调试完成后的匹配，微型处理器用对输出功率的采样以及控制可调匹配网络模块中的开关。
示例性的，以图9的匹配电路说明射频发射电路的工作过程，在调试过程中，在发射功率为20dBm下，调试可调匹配网络的匹配通路1，匹配通路1为SW11、SW12、SW13分别选择一个触点闭合，如SW11闭合到触点a11，SW12闭合到触点a12、SW13闭合到触点a13，进行匹配调试将C11、L11、C14到最佳匹配，并记录此时触点的位置，即保存该调试后的匹配通路1；在发射功率为15dBm下，匹配通路2为SW11、SW12、SW13对应选择触点b11、b12、b13，即将SW11闭合到触点b11，SW12闭合到触点b12、SW13闭合到触点b13，调试将C12、L12、C15到最佳匹配，并记录此时触点的位置，即保存该调试后的匹配通路2；以同样的方式记录下一功率点触点的位置，从而可以确定多个不同的发射功率及与其对应匹配通路，并将各个发射功率与各个匹配通路的对应关系记录在控制单元中内的存储器中。然后在射频发射电路工作过程中，控制单元根据接收的发射功率来选择对应的触点。
具体可以理解为，控制单元根据接收的发射功率在预先存储的发射功率与匹配通路的对应关系中，确定与接收到的发射功率差值最小的发射功率为第一发射功率，且第一发射功率大于接收到的发射功率，第一发射功率对应的匹配通路为第一匹配通路，控制第一匹配通路开始工作，从而，实现在接收不同发射功率下匹配的动态可调。
需要说明的是，本发明实施例提供的射频发射电路中的开关单元可有具有开关控制和功率检测的功能，也可以只具有开关的功能，而将功率检测的功能作为单独的模块来实现，即功率检测单元，开关单元的功能还可 以通过分路器和功率检测单元来实现。
本发明实施例提供的射频发射电路，在接收到发射功率时，使用调试好的匹配通路，故能达到匹配的快速切换，使得射频发射电路随着发射功率的变化匹配动态可调，发射电路在发射指标达标的情况下，功耗达到最低，从而，减小整个射频电路的功耗。
本发明实施例提供一种电路匹配方法，如图10所示，所述方法应用于上述射频发射电路，该方法可以包括：
步骤1001、射频发射电路接收终端的发射功率。
步骤1002、射频发射电路根据预先存储的预设发射功率与预设匹配通路的对应关系，确定与接收到的发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作。
可选地，在所述射频发射电路调试阶段，根据预设发射功率确定与该预设电路对应的匹配通路，然后，将各个预设发射功率与各个预设匹配通路的对应关系存储在工作过程中，通过检测发射电路的发射功率直接选择最优的发射通路匹配通路，从而，实现在接收不同发射功率下匹配的动态可调。
可选地，在所述射频发射电路调试阶段，射频发射电路根据预设发射功率确定与该预设电路对应的匹配通路，可以包括：
射频发射电路接收第一预设发射功率，调节第一预设匹配通路的电容和/或电感，当所述第一预设匹配通路的电流与杂散达到最优时，保存所述第一预设发射功率与所述第一预设匹配通路的对应关系；
接收第二预设发射功率，调节第二预设匹配通路的电容和/或电感，当所述第二预设匹配通路的电流与杂散达到最优时，保存所述第二预设发射功率与所述第二预设匹配通路的对应关系；
接收第三预设发射功率，调节第三预设匹配通路的电容和/或电感，当 所述第三预设匹配通路的电流与杂散达到最优时，保存所述第三预设发射功率与所述第三预设匹配通路的对应关系，依次类推，直到保存所有预设发射功率与预设匹配通路的对应关系。
示例性的，以图8的T型匹配电路说明射频发射电路的工作过程，在前期调试阶段，调整终端的发射功率，例如调整终端的发射功率为20dBm时，调试可调匹配网络的匹配通路1，匹配通路1为SW1闭合到触点a1，SW2闭合到触点a2所形成的通路，调试匹配通路1中的电容C1、C2、和电感L1，使得电流与杂散达到最优，将此时的各个电容、电感的匹配记录下来，即保存该调试后的匹配通路1；然后调整下一个发射功率，例如发射功率为15dBm，再次调试可调匹配网络的匹配通路2，匹配通路2为SW1闭合到触点b1，SW2闭合到触点b2所形成的通路，调试匹配通路2中的电容C3、C4、和电感L2，使得电流与杂散达到最优，并再次记录此时匹配通路2的电容、电感的匹配，即保存该调试后的匹配通路2；依照此方法再次调试下一个发射功率，例如发射功率为10dBm，调试可调匹配网络的匹配通路3，匹配通路3为SW1闭合到触点d1，SW2闭合到触点d2所形成的通路，调试匹配通路3中的电容C5、C6、和电感L3，使得电流与杂散达到最优，将此时的各个电容、电感的匹配记录下来，即保存该调试后的匹配通路3，并将各个发射功率与各个匹配通路的对应关系记录在控制单元中内的存储器中。
需要说明的是，本发明实施例中的预设发射功率的取值不仅限于上述的20dBm、15dBm、10，还可以为其它的值，如23dBm，18dBm等，本发明实施例对此不作具体限定。
可选地，射频发射电路在预先存储的预设发射功率与预设匹配通路的对应关系中，确定与所述接收到的发射功率差值最小的预设发射功率为第一发射功率，且所述第一发射功率大于所述接收到的发射功率，所述第一 发射功率对应的预设匹配通路为第一匹配通路，控制第一匹配通路开始工作。
射频发射电路在工作的过程中，如果射频发射电路通过开关检测到当前接收的发射功率小于20dBm且大于15dBm时，射频发射电路查询预存储的发射功率与各个匹配通路的对应关系，确定当前的发射功率的匹配通路为调试功率在20dBm时对应可调匹配网络中的匹配通路，如图8所示的匹配通路1，然后控制可调匹配网络中的SW1闭合到触点a1，SW2闭合到触点a2，匹配通路1就开始工作；当检测到当前接收的发射功率小于15dBm且大于10dBm时，射频发射电路查询预存储的发射功率与各个匹配通路的对应关系，确定当前的发射功率的匹配通路为调试功率在15dBm时对应可调匹配网络中的匹配通路，如图8所示的匹配通路2，然后控制可调匹配网络中的SW1闭合到触点b1、SW2闭合到触点b2，匹配通路2开始工作；以同样的方式在当前接收的发射功率小于10dBm且大于5dBm时，通过SW1、SW2选择匹配通路3开始工作，即控制可调匹配网络中的SW1闭合到触点d1，SW2闭合到触点d2，依次类推，根据接收的发射功率在预先存储的发射功率与匹配通路的对应关系中，从而，实现在接收不同发射功率下匹配的动态可调。
本发明实施例提供的电路匹配方法，在接收到发射功率时，使用调试好的匹配通路，故能达到匹配的快速切换，使得射频发射电路随着发射功率的变化匹配动态可调，发射电路在发射指标达标的情况下，功耗达到最低，从而，减小整个射频电路的功耗。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于前述电路匹配方法的至少之一，例如，可执行如图10所示的方法。所述计算机存储介质可为随机存储介质RAM、只读存储介质ROM或闪存Flash等存储介质，可选为 非瞬间存储介质。本实施例所述计算机存储介质中存储的可执行指令，至少包括前述实施例中的控制单元的执行对应操作的指令。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保 护范围，但凡按照本发明原理所作的修改，都应当理解为落入本发明的保护范围。

Claims (11)

  1. 一种射频发射电路，所述射频发射电路包括：控制单元、至少一个发射通路单元，发射通路单元包括：至少一个预设匹配通路，所述控制单元中预先存储预设发射功率与预设匹配通路的对应关系，其中，
    所述控制单元，配置为根据预先存储的预设发射功率与预设匹配通路的对应关系，确定与接收到的发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作。
  2. 根据权利要求1所述的射频发射电路，其中，所述发射通路单元包括：第一可调匹配网络模块，与所述第一可调匹配网络模块连接的滤波模块，与所述滤波模块连接的匹配网络模块；
    所述第一可调匹配网络模块包括：至少一个第一预设匹配通路，所述至少一个第一预设匹配通路包括：第一端和第二端，所述第一端与所述控制单元连接，所述第二端与所述滤波模块连接。
  3. 根据权利要求1所述的射频发射电路，其中，所述发射通路单元包括：第二可调匹配网络模块，与所述第二可调匹配网络模块连接的滤波模块，与所述滤波模块连接的第三可调匹配网络模块；
    所述第二可调匹配网络模块包括：至少一个第二预设匹配通路，所述至少一个第二预设匹配通路包括：第三端和第四端，所述第三端与所述控制单元连接，所述第四端与所述滤波模块连接；
    所述第三可调匹配网络模块包括：至少一个第三预设匹配通路，所述至少一个第二预设匹配通路包括：第五端和第六端，所述第五端与所述滤波模块连接，所述第六端与开关单元连接。
  4. 根据权利要求2或3所述的射频发射电路，其中，
    所述第一可调匹配网络模块为双L、Π型、或者T型；
    所述第二可调匹配网络模块为双L、Π型、或者T型；
    所述第三可调匹配网络模块为双L、Π型、或者T型。
  5. 根据权利要求1所述的射频发射电路，其中，所述控制单元，配置为在预先存储的预设发射功率与预设匹配通路的对应关系中，确定与所述接收到的发射功率差值最小的预设发射功率为第一发射功率，且所述第一发射功率大于所述接收到的发射功率，所述第一发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作。
  6. 根据权利要求1所述的方法，其中，所述射频发射电路包括：开关单元，配置为选择不同的工作频段以及功率检测。
  7. 一种电路匹配方法，所述方法包括：
    根据预先存储的预设发射功率与预设匹配通路的对应关系，确定与接收到的发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作。
  8. 根据权利要求7所述的方法，其中，所述根据预先存储的预设发射功率与预设匹配通路的对应关系，确定与接收到的发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作，包括：
    在预先存储的预设发射功率与预设匹配通路的对应关系中，确定与所述接收到的发射功率差值最小的预设发射功率为第一发射功率，且所述第一发射功率大于所述接收到的发射功率，所述第一发射功率对应的预设匹配通路为第一匹配通路，控制所述第一匹配通路工作。
  9. 根据权利要求7所述的方法，其中，在所述射频发射电路调试阶段，所述方法还包括：
    接收第一预设发射功率，调节第一预设匹配通路的电容和/或电感，当所述第一预设匹配通路的电流与杂散达到最优时，保存所述第一预设发射功率与所述第一预设匹配通路的对应关系；
    接收第二预设发射功率，调节第二预设匹配通路的电容和/或电感，当 所述第二预设匹配通路的电流与杂散达到最优时，保存所述第二预设发射功率与所述第二预设匹配通路的对应关系；
    接收第三预设发射功率，调节第三预设匹配通路的电容和/或电感，当所述第三预设匹配通路的电流与杂散达到最优时，保存所述第三预设发射功率与所述第三预设匹配通路的对应关系，依次类推，直到保存所有预设发射功率与预设匹配通路的对应关系。
  10. 根据权利要求7所述的方法，其中，在所述根据预先存储的预设发射功率与预设匹配通路的对应关系，确定与接收到的发射功率对应的预设匹配通路为第一匹配通路之前，还包括：
    接收终端的发射功率。
  11. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求6至10所述电路匹配方法的至少之一。
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