CN114583846A - Dual-mode switching circuit of power amplifier rectifier - Google Patents
Dual-mode switching circuit of power amplifier rectifier Download PDFInfo
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- CN114583846A CN114583846A CN202210180185.3A CN202210180185A CN114583846A CN 114583846 A CN114583846 A CN 114583846A CN 202210180185 A CN202210180185 A CN 202210180185A CN 114583846 A CN114583846 A CN 114583846A
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- power
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- power amplifier
- rectifier
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
Abstract
The invention discloses a dual-mode switching circuit of a power amplifier rectifier, which comprises an input/output matching network, a grid/drain electrode biasing network, a gallium nitride transistor, a coupler, a phase shifter, a direct current power supply, a radio frequency input power supply, a radio frequency/direct current switch, a transmitting/receiving antenna, a detector and a voltage stabilizer. The invention can be divided into two modes of a power amplifier and a rectifier, the switching of the two modes is realized by only a direct current switch and a radio frequency switch, the higher power efficiency can be achieved, the wireless charging and discharging of the equipment can be realized, and the power amplifier can be used as a charging end and a power generation end.
Description
Technical Field
The invention relates to the field of wireless power transmission systems, in particular to a dual-mode switching circuit of a power amplifier rectifier.
Background
The wireless power transmission technology can effectively guarantee the endurance of the micro unmanned aerial vehicle and can also be used for wireless power supply of the sensor. However, in the prior art, the device cannot simultaneously implement the power amplification and rectification functions, and therefore, there is a need in the art for a radio frequency circuit to implement the power amplification and rectification simultaneously.
Disclosure of Invention
The invention provides a dual-mode switching circuit of a power amplifier rectifier, which is a radio frequency circuit, can be used as a power amplifier in a transmitter and a rectifier in a receiver simultaneously by a circuit structure, and can complete the switching of the two modes only under the action of a switch. The circuit can realize wireless charging and discharging of equipment, and can be used as a charging end and a power generation end.
Specifically, the invention provides the following technical scheme:
on one hand, the invention provides a dual-mode switching circuit of a power amplifier rectifier, which comprises an input/output matching network, a grid electrode bias network, a drain electrode bias network, an input/output harmonic control network, a gallium nitride transistor, a coupler, a phase shifter, a direct current power supply, a radio frequency input power supply, a radio frequency switch, a direct current switch, a transmitting antenna, a receiving antenna, a detector and a voltage stabilizer;
the circuit includes a power amplifier mode and a rectifier mode.
Further, in the power amplifier mode,
the radio frequency switch is connected with a power source, and the direct current switch is connected with a drain direct current power supply;
the direct-current voltage of the grid bias network is provided by rectifying a part of radio frequency input power coupled out by an input radio frequency signal through a detector to generate voltage; the direct-current voltage of the drain electrode bias network is provided for the independent voltage source through the switching of a direct-current switch;
the phase shifter and the coupler at the output end do not work, and the detector close to the output end is in an open circuit state;
the power source provides an input power signal, and the input signal is connected with the input matching transistor to achieve the optimal power input;
the grid electrode bias network and the drain electrode bias network respectively provide grid electrode and drain electrode direct current bias voltage, the grid electrode direct current bias voltage and the drain electrode direct current bias voltage provide static working points for the transistor, the input end of the transistor matches the amplified power signal to the transmitting antenna through the output matching circuit, and the transmitting antenna radiates the amplified power signal out to finish power amplification;
in the mode of the rectifier circuit, the power supply is turned on,
the radio frequency switch is connected with the phase shifter, and the direct current switch is connected with the equivalent resistor;
the coupler at the input end does not work;
the output end of the power amplifier mode is switched to the input end of the rectifier mode, the receiving antenna receives radio frequency signals, the received signals pass through the coupler, part of input power passes through the detector and the voltage stabilizer to provide direct current voltage required by the grid bias network, part of input power passes through the phase shifter to provide small signal input power of the grid, the rest of input power serving as the input end is matched to the transistor through the output matching circuit, and the converted direct current power is output to the equivalent resistor.
Further, the voltage regulator provides a voltage stabilizing function.
Further, the switching between the power amplifier mode and the rectifier mode is controlled by a radio frequency switch and a direct current switch.
Further, in the power amplifier mode, the radio frequency switch is connected to a power source, the dc switch is connected to a dc power supply, and the output antenna is in a transmitting antenna mode.
Further, in the rectifier mode, the radio frequency switch is connected with the phase shifter port, the direct current switch is connected with the equivalent resistance port, and the output port antenna is converted into a receiving antenna to provide radio frequency energy input for the rectifier.
Further, in the power amplifier mode, the power amplifier is high-efficiency Class-F/F-1The input end of the power amplifier provides fundamental frequency input power, the grid electrode and the drain electrode bias network provide direct current supply voltage to enable the transistor to be in a proper static working point, the input and output matching networks provide matching for the input and output ends of the transistor, input power is obtained from the input end and output power is obtained from the output end, and the harmonic control network obtains the maximum direct current to radio frequency power conversion efficiency in the mode of the power amplifier by controlling second and third harmonics of an output radio frequency signal.
Further, in the rectifier mode, the rectifier is formed by time reversal of the power amplifier, the equivalent resistor replaces a direct current power port in the amplifier, the theoretical value of the equivalent resistor is equal to the ratio of drain direct current bias voltage to direct current bias current in the power amplifier mode, an output port of the power amplifier is converted into an input port of the rectifier, input power is divided into two parts through the coupler, the first part is required to be drain direct current power in the corresponding power amplifier mode and input through an output channel in the power amplifier mode, the second part is required to be base frequency input power in the corresponding power amplifier mode, and direct current power obtained through rectification is output to a load through the drain bias circuit.
Further, the external input impedance of the power source is 50 Ω.
Furthermore, the power amplifier and the rectifier share the same circuit structure in two modes, and the circuit structure is high-efficiency gallium nitride Class-F/F-1A power amplifier structure.
The invention discloses a dual-mode switching circuit of a power amplifier rectifier, which comprises an input/output matching network, a grid/drain electrode biasing network, a gallium nitride transistor, a coupler, a phase shifter, a direct current power supply, a radio frequency input power supply, a radio frequency/direct current switch, a transmitting/receiving antenna, a detector and a voltage stabilizer. The invention can be divided into two modes of a power amplifier and a rectifier, the switching of the two modes is realized by only a direct current switch and a radio frequency switch, the higher power efficiency can be achieved, the wireless charging and discharging of the equipment can be realized, and the power amplifier can be used as a charging end and a power generation end.
Drawings
FIG. 1 is a diagram of a power amplifier architecture;
FIG. 2 shows a Class-F/F scheme based on high efficiency-1A designed rectifier structure diagram of the power amplifier;
FIG. 3 is a schematic diagram of a dual-mode integrated circuit structure of a power amplifier and a rectifier;
fig. 4 is a schematic diagram of a dual-mode integrated circuit structure of the improved power amplifier and rectifier.
Detailed Description
The invention provides a dual-mode switching circuit of a power amplifier rectifier, which can be used for a radio frequency circuit structure of a transmitting circuit and a receiving circuit, can realize two functions of power amplification and a rectifier, and is characterized in that the circuit structure is a Class-F/F circuit-1The power amplifier comprises a basic structure, a coupler, a phase shifter, a direct current/radio frequency switch, a receiving/transmitting antenna, a direct current power supply, a fundamental frequency power supply, a detector and a voltage stabilizer.
In order to further clearly and completely describe the technical scheme of the invention, the following embodiment specifically describes the technical scheme of dual-mode integration of the power amplifier rectifier:
first embodiment
(1) A single power amplifier, as shown in fig. 1, consists of input and output matching circuits, drain and gate biases, transistors, an input power source, a dc power source, and an output load. The purpose of input matching is to supply input power to the transistor as much as possible without reflection, and the purpose of the output matching circuit is to output amplified power to a 50 Ω load to the maximum; the purpose of the drain and gate bias circuit is to provide the transistor with the appropriate operating state; the input power source provides grid input power, and the direct current power source provides direct current voltage required by bias;
(2) rectifier in power amplifier mode, which will result from fig. 1 with high efficiency Class-F/F based on time-reversal dual theory-1The power amplifier, which is used inversely as a rectifier, is composed of an input and output matching circuit, drain and gate bias, transistors, dc power supply, output load and coupler phase shifter as shown in fig. 2. The power amplifier rectifier is composed of time reversal of power amplifier, Thevenin equivalent resistance RDReplacing V in an amplifierDCDC power supply port, theoretical value RDEqual to V in the power amplifierDC/IDCAt best, practiceThe output port of the amplifier is converted into the input port of the rectifier, the input power is divided into two parts by the coupler, one part is required to be the drain direct current power under the corresponding power amplifier mode and is input through the output channel under the power amplifier mode, the other part is required to be the fundamental frequency input power under the corresponding power amplifier mode, and the high-efficiency rectifier function is realized through the time reversal duality theory.
(3) A dual-mode integrated circuit structure of a power amplifier and a rectifier is disclosed, which realizes two modes of power amplification and rectification functions based on the same circuit. Referring to the circuit structure of fig. 1 and 2, two switches are used to control the switching of two modes, and the circuit structure is shown in fig. 3, when the rf switch S1 is connected to the input matching, the input signal is provided by the external power source, the gate and drain bias voltages are provided by the external voltage source, the dc switch S2 is connected to VDCWhen the circuit works in a power amplifier mode, the amplified output power is radiated out through an antenna by the output matching circuit; when the RF switch S1 is connected to the phase shifter, the DC switch S2 is connected to RDWhen the circuit works in a rectifier mode, in the mode, a radio frequency signal passes through a receiving antenna and a coupler, one part of the radio frequency signal is used as a grid radio frequency driving input signal, the other part of the radio frequency signal is used as an input signal of a rectifier, and the radio frequency signal finally passes through a matching circuit and is output to a resistor (R) through a drain electrode bias circuitDAnd a load realizes a rectification function.
Second embodiment
In order to further optimize the technical scheme of the invention, the embodiment provides an improved power amplifier rectifier integrated design, the circuit structure is shown in fig. 4, when the radio frequency switch S1 is connected and input matched, an input signal is provided by an external power source, a grid bias voltage is coupled with a part of input power, the grid bias voltage is rectified by a detector and stabilized by a voltage stabilizer to provide a proper grid voltage for the grid bias, because the direct current voltage required by the drain is larger, the external direct current power source is selected to provide the drain bias voltage, the direct current switch S2 is connected with a V, the grid bias voltage is provided by a grid voltage stabilizer, and the grid bias voltage is adjusted by a voltage stabilizerDCThe circuit works in power amplifier mode, the output end of the transistor passes through the harmonic control circuit and outputsThe output matching circuit radiates the amplified output power out through the antenna. When the RF switch S1 is connected to the phase shifter, the DC switch S2 is connected to RDWhen the circuit works in a rectifier mode, a radio frequency signal passes through a receiving antenna and a coupler, one part of power is coupled out, grid direct current voltage is provided for a grid bias circuit through a detector and a voltage stabilizer, drain bias voltage is large and is provided by an external direct current power supply, one part of the grid direct current voltage is used as a grid radio frequency driving input signal, the other part of the grid direct current voltage is used as an input signal of a rectifier, and finally a rectified signal is output to R through a drain bias circuit through a matching circuitDAnd a load realizes a rectification function.
The final dual-mode integrated circuit structure of the power amplifier rectifier is shown in fig. 4, the two circuit structures can realize two functions of power amplification and rectification, and the switching of the two modes is controlled by two switches. In the power amplifier mode, the RF switch S1 is connected to a power source V with an external input impedance of 50 ΩSThe DC switch S2 is connected with the drain DC power supply VDCThe grid input signal enters the transistor through the input matching circuit and is amplified by the transistor, and the output signal is matched with the output matching circuit through the harmonic control circuit and the output matching circuit to be radiated out from the transmitting antenna end. In the rectifier mode, the RF switch S1 is connected to the phase shifter port, and the DC switch S2 is connected to RDThe resistance port and the output port antenna are converted into a receiving antenna to provide radio frequency energy input for the rectifier, a small part of power of an input radio frequency signal is used as grid driving power through the coupler, the other part of the power of the input radio frequency signal is used as an input signal of the rectifier, and finally the rectified signal is output to the R through the drain electrode bias circuitDAnd (4) loading.
The invention discloses a dual-mode switching circuit of a power amplifier rectifier, which comprises an input/output matching network, a grid/drain electrode biasing network, a gallium nitride transistor, a coupler, a phase shifter, a direct-current power supply, a radio frequency input power supply, a radio frequency/direct-current switch, a transmitting/receiving antenna, a detector and a voltage stabilizer. The invention can be divided into two modes of a power amplifier and a rectifier, the switching of the two modes can be realized by only a direct current switch and a radio frequency switch, the higher power efficiency can be achieved, the wireless charging and discharging of the equipment can be realized, and the device can be used as a charging end and a power generation end.
The embodiments of the present invention described above are combinations of elements and features of the present invention. Unless otherwise mentioned, the elements or features may be considered optional. Each element or feature may be practiced without being combined with other elements or features. In addition, the embodiments of the present invention may be configured by combining some elements and/or features. The order of operations described in the embodiments of the present invention may be rearranged. Some configurations of any embodiment may be included in another embodiment, and may be replaced with corresponding configurations of the other embodiment. It will be apparent to those skilled in the art that claims that are not explicitly cited in each other in the appended claims may be combined into an embodiment of the present invention or may be included as new claims in a modification after the present invention is filed.
In a firmware or software configuration, embodiments of the present invention may be implemented in the form of modules, procedures, functions, and the like. The software codes may be stored in memory units and executed by processors. The memory unit is located inside or outside the processor, and may transmit and receive data to and from the processor via various known means.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A dual-mode switching circuit of a power amplifier rectifier is characterized by comprising an input/output matching network, a grid electrode bias network, a drain electrode bias network, an input/output harmonic control network, a gallium nitride transistor, a coupler, a phase shifter, a direct current power supply, a radio frequency input power supply, a radio frequency switch, a direct current switch, a transmitting antenna, a receiving antenna, a detector and a voltage stabilizer;
the circuit includes a power amplifier mode and a rectifier mode.
2. The dual mode switching circuit of a power amplifier rectifier of claim 1,
in the power amplifier mode, the amplifier is,
the radio frequency switch is connected with a power source, and the direct current switch is connected with a drain direct current power supply;
the direct-current voltage of the grid bias network is provided by rectifying a part of radio frequency input power coupled out by an input radio frequency signal through a detector to generate voltage; the direct-current voltage of the drain electrode bias network is provided for the independent voltage source through the switching of a direct-current switch;
the phase shifter and the coupler at the output end do not work, and the detector close to the output end is in an open circuit state;
the power source provides an input power signal, and the input signal is connected with the input matching transistor to achieve the optimal power input;
the grid electrode bias network and the drain electrode bias network respectively provide grid electrode and drain electrode direct current bias voltage, the grid electrode direct current bias voltage and the drain electrode direct current bias voltage provide static working points for the transistor, the input end of the transistor matches the amplified power signal to the transmitting antenna through the output matching circuit, and the transmitting antenna radiates the amplified power signal out to finish power amplification;
in the mode of the rectifier, the power supply is,
the radio frequency switch is connected with the phase shifter, and the direct current switch is connected with the equivalent resistor;
the coupler at the input end does not work;
the output end of the power amplifier mode is switched to the input end of the rectifier mode, the receiving antenna receives radio frequency signals, the received signals pass through the coupler, part of input power passes through the detector and the voltage stabilizer to provide direct current voltage required by the grid bias network, part of input power passes through the phase shifter to provide small signal input power of the grid, the rest of input power serving as the input end is matched to the transistor through the output matching circuit, and the converted direct current power is output to the equivalent resistor.
3. The dual mode switching circuit of claim 1 wherein the voltage regulator provides a regulated voltage.
4. The dual mode switching circuit of claim 1, wherein the switching between the power amplifier mode and the rectifier mode is controlled by a radio frequency switch and a dc switch.
5. The dual mode switching circuit of a power amplifier rectifier of claim 1,
in the power amplifier mode, the radio frequency switch is connected with a power source, the direct current switch is connected with a direct current power supply, and an output end antenna is in a transmitting antenna mode.
6. The dual mode switching circuit of a power amplifier rectifier of claim 1,
in the rectifier mode, the radio frequency switch is connected with a phase shifter port, the direct current switch is connected with an equivalent resistance port, and an output port antenna is converted into a receiving antenna to provide radio frequency energy input for the rectifier.
7. The dual-mode switching circuit of claim 1, wherein in the power amplifier mode, the power amplifier is a high-efficiency Class-F/F-1The input end of the power amplifier provides fundamental frequency input power, the grid electrode bias network and the drain electrode bias network provide direct current supply voltage to enable the transistor to be in a proper static working point, and the input matching network and the output matching network provide matching for the input end and the output end of the transistor, so that the input power is obtained from the input end to ensure that the transistor is in a stable stateAnd outputting power from the output end, wherein the harmonic control network controls the second harmonic and the third harmonic of the output radio frequency signal to obtain the maximum direct current-to-radio frequency power conversion efficiency under the mode of the power amplifier.
8. The dual-mode switching circuit of claim 1, wherein in the rectifier mode, the rectifier is formed by time reversal of a power amplifier, the equivalent resistor replaces a dc power port of the amplifier, a theoretical value of the equivalent resistor is equal to a ratio of a drain dc bias voltage to a dc bias current in the power amplifier mode, an output port of the power amplifier is converted into an input port of the rectifier, an input power is divided into two parts by a coupler, a first part is required to correspond to a drain dc power in the power amplifier mode and is input through an output path in the power amplifier mode, a second part is required to correspond to a fundamental frequency input power in the power amplifier mode, and the dc power obtained by rectification is output to a load through the drain bias circuit.
9. The dual-mode switching circuit of the power amplifier rectifier as claimed in claim 3, wherein the external input impedance of the power source is 50 Ω of the power source.
10. The dual-mode switching circuit of the power amplifier rectifier of claim 1, wherein: the power amplifier and the rectifier share the same circuit structure in two modes, and the circuit structure is high-efficiency gallium nitride Class-F/F-1A power amplifier structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210180185.3A CN114583846A (en) | 2022-02-25 | 2022-02-25 | Dual-mode switching circuit of power amplifier rectifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210180185.3A CN114583846A (en) | 2022-02-25 | 2022-02-25 | Dual-mode switching circuit of power amplifier rectifier |
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| CN114583846A true CN114583846A (en) | 2022-06-03 |
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| CN202210180185.3A Pending CN114583846A (en) | 2022-02-25 | 2022-02-25 | Dual-mode switching circuit of power amplifier rectifier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317988A (en) * | 2023-05-24 | 2023-06-23 | 广东工业大学 | Reconfigurable broadband low-noise amplifier |
| CN116346107A (en) * | 2023-05-31 | 2023-06-27 | 广东工业大学 | HBT-based radio frequency switch |
-
2022
- 2022-02-25 CN CN202210180185.3A patent/CN114583846A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317988A (en) * | 2023-05-24 | 2023-06-23 | 广东工业大学 | Reconfigurable broadband low-noise amplifier |
| CN116346107A (en) * | 2023-05-31 | 2023-06-27 | 广东工业大学 | HBT-based radio frequency switch |
| CN116346107B (en) * | 2023-05-31 | 2023-08-11 | 广东工业大学 | HBT-based radio frequency switch |
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