Dual-polarization amplifying circuit structure

Abstract

The invention discloses a dual-polarization amplifying circuit structure which is based on balanced amplifier topology, a single-pole double-throw switch is arranged in front, input and output ports are switched through the single-pole double-throw switch, and then the coupling characteristic between the ports of a Lange bridge is utilized to achieve dual-polarization output. Compared with a traditional dual-polarization amplification circuit structure, the circuit structure avoids introduction of a polarization switch in final-stage matching of the amplifier, switch loss is omitted, and the efficiency of the amplifier is improved; moreover, the natural high isolation characteristic between the Lange bridge output port and the isolation port reduces the mutual interference between the dual-polarization channels, eliminates the cross polarization leakage, and greatly improves the performance of the dual-polarization amplifier.

Description

TECHNICAL FIELD

[0001] The present application relates to a microstrip monolithic integrated circuit, in particular to a dual-polarized amplification circuit structure. BACKGROUND

[0002] In a wireless communication system, a dual-polarized antenna can effectively improve the spectrum utilization and the multipath anti-interference capability by transmitting orthogonal signals of horizontal and vertical polarizations simultaneously, and has become one of the core technologies of satellite communication and millimeter wave systems. As a key component in a wireless communication system, the efficiency and channel isolation of a power amplifier directly affect the overall performance of the system, which requires a dual-polarized amplification circuit to have higher efficiency and channel isolation. The traditional dual-polarized amplification circuit usually adopts a topology structure with a single-pole double-throw switch at the back, which introduces switch loss and cross-polarization leakage, resulting in reduced efficiency and insufficient channel isolation of the amplifier. SUMMARY

[0003] The purpose of the present application is to provide a dual-polarized amplification circuit structure with high efficiency and capable of eliminating cross-polarization leakage.

[0004] Technical solution: The dual-polarized amplification circuit structure of the present application comprises a single-pole double-throw switch, a Lange bridge power distribution network, a balanced power amplification circuit and a Lange bridge power synthesis network, the single-pole double-throw switch has a power distribution network and selectively conductive first and second series-parallel structure circuits, and the balanced power amplification circuit has parallel first and second power amplification branches.

[0005] The first series-parallel structure circuit is connected to a first port of the Lange bridge power distribution network, and the second series-parallel structure circuit is connected to a second port of the Lange bridge power distribution network; a third port of the Lange bridge power distribution network is connected to a fifth port of the Lange bridge power synthesis network through the first power amplification branch, and a fourth port of the Lange bridge power distribution network is connected to a sixth port of the Lange bridge power synthesis network through the second power amplification branch; a seventh port of the Lange bridge power synthesis network is used to output a signal when the second series-parallel structure circuit is conductive and no signal is output when the first series-parallel structure circuit is conductive; an eighth port of the Lange bridge power synthesis network is used to output a signal when the first series-parallel structure circuit is conductive and no signal is output when the second series-parallel structure circuit is conductive; the fourth port is a through port of the first port and a coupling port of the second port; the third port is a through port of the second port and a coupling port of the first port; the eighth port is a through port of the fifth port and a coupling port of the sixth port; and the seventh port is a through port of the sixth port and a coupling port of the fifth port.

[0006] Further, the first series-parallel circuit includes a first series transistor and a first series microstrip line connected in series, and the first series transistor is connected to the power divider network, and the first series microstrip line is connected to a first port of the Lange bridge power distribution network; the first series transistor is connected in parallel with a first parallel resistor, and a first parallel transistor is arranged between the first series transistor and the power divider network.

[0007] Further, the second series-parallel circuit includes a second series transistor and a second series microstrip line connected in series, and the second series transistor is connected to the power divider network, and the second series microstrip line is connected to a second port of the Lange bridge power distribution network; the second series transistor is connected in parallel with a second parallel resistor, and a second parallel transistor is arranged between the second series transistor and the power divider network.

[0008] Further, the power divider network includes a third series microstrip line and a fourth series microstrip line connected in series, and the third series microstrip line is connected to the first series transistor, and the fourth series microstrip line is connected to the second series transistor; a to-ground capacitor is connected in parallel between the third series microstrip line and the fourth series microstrip line.

[0009] Further, when the single-pole double-throw switch selects the first series-parallel circuit to be turned on, the gate of the first series transistor and the second parallel transistor is set to high level, and the gate of the second series transistor and the first parallel transistor is set to low level.

[0010] Further, when the single-pole double-throw switch selects the second series-parallel circuit to be turned on, the gate of the second series transistor and the first parallel transistor is set to high level, and the gate of the first series transistor and the second parallel transistor is set to low level.

[0011] Further, when the single-pole double-throw switch selects the first series-parallel circuit to be turned on, the injected signal is input into the Lange bridge power distribution network from the first port through the first series-parallel circuit, is differentially output to the third port and the fourth port after being coupled by the Lange bridge, is amplified through the balanced power amplifier circuit, and is input into the Lange bridge power synthesis network from the fifth port and the sixth port after being amplified, is power synthesized to the eighth port output after being coupled by the Lange bridge, and no signal is output from the seventh port at this time.

[0012] Further, half of the input power of the first port is directly transmitted to the fourth port, and the other half is coupled to the third port; the signal phase of the fourth port leads the signal phase of the third port by 90°; the signals of the fourth port and the third port are respectively amplified to the sixth port and the fifth port; the differential signals of the fifth port and the sixth port are coupled and distributed through the Lange bridge power synthesis network, half of the signal of the sixth port is directly transmitted to the seventh port, and the other half is coupled to the eighth port, the phase of the first direct signal on the seventh port leads the phase of the first coupled signal on the eighth port by 90°; similarly, half of the signal of the fifth port is directly transmitted to the eighth port, and the other half is coupled to the seventh port, the phase of the second direct signal on the eighth port leads the phase of the second coupled signal on the seventh port by 90°; the first direct signal and the second coupled signal on the seventh port are opposite and cancel each other out; the second direct signal and the second coupled signal on the eighth port are in phase and superimposed, and the signal is output from the eighth port, and the seventh port has no signal output.

[0013] Further, when the single-pole double-throw switch selects the second series-parallel structure circuit to be turned on, the injected signal is input from the second port to the Lange bridge power distribution network through the second series-parallel structure circuit, and is differentially output to the third port and the fourth port after being coupled by the Lange bridge, and is amplified through the balanced power amplifier circuit, and is input from the fifth port and the sixth port to the Lange bridge power synthesis network, and is power synthesized to the seventh port output after being coupled by the Lange bridge, at this time the eighth port has no signal output.

[0014] Further, half of the input power of the first port is directly transmitted to the fourth port, and the other half is coupled to the third port; the signal phase of the fourth port leads the signal phase of the third port by 90°; the signals of the fourth port and the third port are respectively amplified to the sixth port and the fifth port; the differential signals of the fifth port and the sixth port are coupled and distributed through the Lange bridge power synthesis network, half of the signal of the sixth port is directly transmitted to the seventh port, and the other half is coupled to the eighth port, the phase of the first direct signal on the seventh port leads the phase of the first coupled signal on the eighth port by 90°; similarly, half of the signal of the fifth port is directly transmitted to the eighth port, and the other half is coupled to the seventh port, the phase of the second direct signal on the eighth port leads the phase of the second coupled signal on the seventh port by 90°; the first direct signal and the second coupled signal on the seventh port are opposite and cancel each other out; the second direct signal and the second coupled signal on the eighth port are in phase and superimposed, and the signal is output from the eighth port, and the seventh port has no signal output.

[0015] Beneficial effects: compared with the prior art, the present application has the following remarkable advantages: the present application is based on a balanced amplifier topology, a single-pole double-throw switch is arranged in front, the input and output ports are switched through the single-pole double-throw switch, and the coupling characteristics between the ports of the Lange bridge are utilized to realize dual-polarized output. Compared with the traditional dual-polarized amplification circuit structure, the circuit structure avoids introducing a polarization switch in the amplifier final stage matching, saves the switch loss, and improves the efficiency of the amplifier; and the natural high isolation characteristics between the Lange bridge output end and the isolation port also reduce the mutual interference between the two polarization channels, eliminate the cross-polarization leakage, and greatly improve the performance of the dual-polarized amplifier. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a dual-polarized amplification circuit structure schematic diagram provided by an embodiment of the present application;

[0017] Fig. 2 is a dual-polarized amplification circuit structure schematic diagram provided by an embodiment of the present application;

[0018] Fig. 3 is the efficiency simulation results of the dual-polarized amplification circuit structure and the traditional dual-polarized amplification circuit structure. DETAILED DESCRIPTION

[0019] The present application will be further described below in conjunction with the drawings.

[0020] The accompanying drawings are as follows: Figs. 1 to 3 The reference signs in the drawings are as follows:

[0021] 101, single-pole double-throw switch; 107, power division network; 121, to ground capacitor; 131, third series microstrip line; 132, fourth series microstrip line; 105, first series-parallel structure circuit; 151, first parallel transistor; 141, first parallel resistor; 152, first series transistor; 133, first series microstrip line; 106, second series-parallel structure circuit; 153, second parallel transistor; 142, second parallel resistor; 154, second series transistor; 134, second series microstrip line; 102, Lange bridge power distribution network; 161, first port; 162, second port; 163, third port; 164, fourth port; 103, balanced power amplification circuit; 104, Lange bridge power synthesis network; 165, fifth port; 166, sixth port; 167, seventh port; 168, eighth port.

[0022] As Fig. 1 and Fig. 2As shown, the embodiment of the present application provides a dual-polarized amplification circuit structure, which comprises a single-pole double-throw switch 101, a Lange bridge power distribution network 102, a balanced power amplification circuit 103 and a Lange bridge power synthesis network 104.

[0023] The single-pole double-throw switch 101 has a power distribution network 107 and selectively conductive first and second series-parallel structure circuits 105 and 106, and the power distribution network 107 comprises third and fourth series-connected microstrip lines 131 and 132 in series connection, and a to-ground capacitor 121 is connected in parallel between the third and fourth series-connected microstrip lines 131 and 132.

[0024] The first series-parallel structure circuit 105 comprises first and second series-connected transistors 152 and 154 in series connection, and the first series-connected transistor 152 is connected to the third series-connected microstrip line 131, and the second series-connected microstrip line 134 is connected to a first port 161 of the Lange bridge power distribution network 102; a first parallel resistor 141 is connected in parallel to the first series-connected transistor 152, and a first parallel transistor 151 is arranged between the first series-connected transistor 152 and the third series-connected microstrip line 131.

[0025] The second series-parallel structure circuit 106 comprises first and second series-connected transistors 152 and 154 in series connection, and the first series-connected transistor 152 is connected to the third series-connected microstrip line 131, and the second series-connected microstrip line 134 is connected to a first port 161 of the Lange bridge power distribution network 102; a first parallel resistor 141 is connected in parallel to the first series-connected transistor 152, and a first parallel transistor 151 is arranged between the first series-connected transistor 152 and the third series-connected microstrip line 131.

[0026] The balanced power amplification circuit 103 has first and second parallel power amplification branches.

[0027] The third port 163 of the Lange bridge power distribution network 102 is connected to a fifth port 165 of the Lange bridge power synthesis network 104 through the first power amplification branch, and the fourth port 164 of the Lange bridge power distribution network 102 is connected to a sixth port 166 of the Lange bridge power synthesis network 104 through the second power amplification branch. The seventh port 167 of the Lange bridge power synthesis network 104 is used to output a signal when the second series-parallel structure circuit 106 is conductive, and no signal is output when the first series-parallel structure circuit 105 is conductive; and the eighth port 168 of the Lange bridge power synthesis network 104 is used to output a signal when the first series-parallel structure circuit 105 is conductive, and no signal is output when the second series-parallel structure circuit 106 is conductive.

[0028] The fourth port 164 is a through end of the first port 161 and a coupling end of the second port 162; the third port 163 is a through end of the second port 162 and a coupling end of the first port 161; the eighth port 168 is a through end of the fifth port 165 and a coupling end of the sixth port 166; and the seventh port 167 is a through end of the sixth port 166 and a coupling end of the fifth port 165.

[0029] The selective conduction of the first series-parallel circuit 105 and the second series-parallel circuit 106 is implemented as follows:

[0030] When the single-pole double-throw switch 101 selects the first series-parallel circuit 105 to be conducted, the gate of the first series transistor 152 and the second parallel transistor 153 is set to high level, and the gate of the second series transistor 154 and the first parallel transistor 151 is set to low level. At this time, the second parallel resistor 142 and the second parallel transistor 153 form a 50Ω impedance (system impedance) path to ground, and the impedance of the second port 162 of the Lange bridge power distribution network 102 is 50Ω.

[0031] Similarly, when the single-pole double-throw switch 101 selects the second series-parallel circuit 106 to be conducted, the gate of the second series transistor 154 and the first parallel transistor 151 is set to high level, and the gate of the first series transistor 152 and the second parallel transistor 153 is set to low level. At this time, the first parallel resistor 141 and the first parallel transistor 151 form a 50Ω impedance path to ground, and the impedance of the first port 161 of the Lange bridge power distribution network 102 is 50Ω.

[0032] When the single-pole double-throw switch 101 selects the first series-parallel circuit 105 to be conducted, the injected signal is input from the first port 161 to the Lange bridge power distribution network 102 through the first series-parallel circuit 105, and is differentially output to the third port 163 and the fourth port 164 after being coupled by the Lange bridge. After being amplified by the balanced power amplifier circuit 103, it is input from the fifth port 165 and the sixth port 166 to the Lange bridge power synthesis network 104, and is power synthesized to the eighth port 168 output after being coupled by the Lange bridge. At this time, the seventh port 167 has no signal output, and the port impedance is 50Ω.

[0033] Specifically, half of the input power of the first port 161 is directly transmitted to the fourth port 164, and the other half is coupled to the third port 163. Ideally, no power is transmitted to the second port 162 (isolation end), and at this time, the signal phase of the fourth port 164 leads the signal phase of the third port 163 by 90°; the signals of the fourth port 164 and the third port 163 are amplified to the sixth port 166 and the fifth port 165, respectively, and at this time, the phase of the signal on the sixth port 166 leads the phase of the signal on the fifth port 165 by 90°; the differential signals of the fifth port 165 and the sixth port 166 are coupled and distributed through the Lange bridge power synthesis network 104, and half of the signal of the sixth port 166 is directly transmitted to the seventh port 167, and the other half is coupled to the eighth port 168. The phase of the first direct signal 171 on the seventh port 167 leads the phase of the first coupled signal 172 on the eighth port 168 by 90°; similarly, half of the signal of the fifth port 165 is directly transmitted to the eighth port 168, and the other half is coupled to the seventh port 167. The phase of the second direct signal 173 on the eighth port 168 leads the phase of the second coupled signal 174 on the seventh port 167 by 90°; because the phase of the signal on the sixth port 166 leads the phase of the signal on the fifth port 165 by 90°, the first direct signal 171 on the seventh port 167 leads the second coupled signal 174 on the seventh port 167 by 180° phase, and the two signals are opposite and cancel each other out; the second direct signal 172 on the eighth port 168 has no phase difference with the second coupled signal 173 on the eighth port 168, and the two signals are in phase and superimposed, and the signal is output from the eighth port 168. The seventh port 167 has no signal output.

[0034] Similarly, when the single-pole double-throw switch 101 selects the second series-parallel structure circuit 106 to be turned on, the injected signal is input from the second port 162 to the Lange bridge power distribution network 102 through the second series-parallel structure circuit 106, and is differentially output to the third port 163 and the fourth port 164 after being coupled by the Lange bridge. After being amplified by the balanced power amplifier circuit 103, it is input from the fifth port 165 and the sixth port 166 to the Lange bridge power synthesis network 104, and is power synthesized to the seventh port 167 output after being coupled by the Lange bridge. At this time, the eighth port 168 has no signal output, and the port impedance is 50Ω.

[0035] Specifically, the input power of the second port 162 is transmitted directly to the third port 163 and coupled to the fourth port 164, and no power is transmitted to the first port 161 (isolation end) in an ideal case, at which time the signal phase of the third port 163 leads the signal phase of the fourth port 164 by 90°; the signals of the fourth port 164 and the third port 163 are amplified to the sixth port 166 and the fifth port 165, respectively, at which time the signal phase of the fifth port 165 leads the signal phase of the sixth port 166 by 90°; the differential signals of the fifth port 165 and the sixth port 166 are coupled and distributed through the Lange bridge power combining network 104, and the signal of the sixth port 166 is transmitted directly to the seventh port 167 and coupled to the eighth port 168, and the phase of the first direct signal 171 on the seventh port 167 leads the phase of the first coupled signal 172 on the eighth port 168 by 90°; similarly, the signal of the fifth port 165 is transmitted directly to the eighth port 168 and coupled to the seventh port 167, and the phase of the second direct signal 173 on the eighth port 168 leads the phase of the second coupled signal 174 on the seventh port 167 by 90°; since the phase of the signal on the fifth port 165 leads the phase of the signal on the sixth port 166 by 90°, the first direct signal 171 on the seventh port 167 has no phase difference with the second coupled signal 174 on the seventh port 167, and the two signals are in-phase superimposed; the second direct signal 172 on the eighth port 168 leads the second coupled signal 173 on the eighth port 168 by 180° phase, and the two signals are anti-phase and cancel each other out, and the signal is output from the seventh port 167 and no signal is output from the eighth port 168, and the function of polarized output is finally realized.

[0036] The dual-polarized amplification circuit structure provided by the embodiment of the application is manufactured by comprehensively considering frequency, bandwidth, power and efficiency with appropriate semiconductor technology, and a wafer of the dual-polarized amplification circuit structure uses GaN material as a substrate. The dual-polarized amplification circuit structure can be applied to a microwave, millimeter wave and ultra-wideband monolithic integrated power amplifier circuit.

[0037] The application flexibly uses the selection characteristics of the Lange bridge, and innovatively preposes a dual-polarized single-pole double-throw switch originally located at the output end of the amplifier, switches the input and output ports through the single-pole double-throw switch, effectively reduces the output end loss while realizing dual-polarized output, and improves the efficiency of the dual-polarized amplifier. Through the Lange bridge postposition, as the output circuit of the dual-polarized amplifier, the isolation degree of the dual-polarized output port is greatly improved by using the high isolation characteristics of the structure itself. As shown in Fig. 3 The efficiency of the dual-polarized amplification circuit structure provided by the embodiment of the application can reach 41% in the f1-f2 GHz frequency band, which is 8% higher than that of the traditional dual-polarized amplifier circuit structure with a single-pole double-throw switch postposition.

Claims

1. A dual-polarization amplifier circuit structure, characterized in that, It includes a single-pole double-throw switch (101), a Lange bridge power distribution network (102), a balanced power amplifier circuit (103), and a Lange bridge power combining network (104). The single-pole double-throw switch (101) has a power distribution network (107) and a first series-parallel structure circuit (105) and a second series-parallel structure circuit (106) that are selectively turned on. The balanced power amplifier circuit (103) has a first power amplification branch and a second power amplification branch that are parallel. The first serial-parallel circuit (105) is connected to the first port (161) of the Lange bridge power distribution network (102), and the second serial-parallel circuit (106) is connected to the second port (162) of the Lange bridge power distribution network (102); the third port (163) of the Lange bridge power distribution network (102) is connected to the fifth port (165) of the Lange bridge power combining network (104) via the first power amplification branch, and the fourth port (164) of the Lange bridge power distribution network (102) is connected to the sixth port (166) of the Lange bridge power combining network (104) via the second power amplification branch; the seventh port (167) of the Lange bridge power combining network (104) is used when the second serial-parallel circuit (105) is connected to the second port (165) of the Lange bridge power combining network (104). 106) Output signal when turned on, no signal output when the first series-parallel structure circuit (105) is turned on; the eighth port (168) of the Lange bridge power combining network (104) is used to output signal when the first series-parallel structure circuit (105) is turned on, and no signal output when the second series-parallel structure circuit (106) is turned on; the fourth port (164) is the through end of the first port (161) and the coupling end of the second port (162); the third port (163) is the through end of the second port (162) and the coupling end of the first port (161); the eighth port (168) is the through end of the fifth port (165) and the coupling end of the sixth port (166); the seventh port (167) is the through end of the sixth port (166) and the coupling end of the fifth port (165).

2. The dual-polarization amplifier circuit structure according to claim 1, characterized in that, The first series-parallel structure circuit (105) includes a first series transistor (152) and a first series microstrip line (133) connected in series. The first series transistor (152) is connected to the power divider network (107), and the first series microstrip line (133) is connected to the first port (161) of the Lange bridge power distribution network (102). A first parallel resistor (141) is connected in parallel on the first series transistor (152), and a first parallel transistor (151) is provided between the first series transistor (152) and the power divider network (107).

3. The dual-polarization amplifier circuit structure according to claim 2, characterized in that, The second series-parallel structure circuit (106) includes a second series transistor (154) and a second series microstrip line (134) connected in series. The second series transistor (154) is connected to the power divider network (107), and the second series microstrip line (134) is connected to the second port (162) of the Lange bridge power distribution network (102). A second parallel resistor (142) is connected in parallel on the second series transistor (154), and a second parallel transistor (153) is provided between the second series transistor (154) and the power divider network (107).

4. The dual-polarization amplifier circuit structure according to claim 3, characterized in that, The power divider network (107) includes a third series microstrip line (131) and a fourth series microstrip line (132) connected in series. The third series microstrip line (131) is connected to the first series transistor (152), and the fourth series microstrip line (132) is connected to the second series transistor (154). A capacitor to ground (121) is connected in parallel between the third series microstrip line (131) and the fourth series microstrip line (132).

5. The dual-polarization amplifier circuit structure according to claim 3, characterized in that, When the single-pole double-throw switch (101) selects the first series-parallel structure circuit (105) to be turned on, it sets the gates of the first series transistor (152) and the second parallel transistor (153) to a high level, and sets the gates of the second series transistor (154) and the first parallel transistor (151) to a low level.

6. The dual-polarization amplifier circuit structure according to claim 3, characterized in that, When the single-pole double-throw switch (101) selects the second series-parallel structure circuit (106) to be turned on, it sets the gates of the second series transistor (154) and the first parallel transistor (151) to a high level, and sets the gates of the first series transistor (152) and the second parallel transistor (153) to a low level.

7. The dual-polarization amplifier circuit structure according to any one of claims 1 to 6, characterized in that, When the single-pole double-throw switch (101) selects the first series-parallel structure circuit (105) to be turned on, the injected signal is input from the first port (161) of the first series-parallel structure circuit (105) to the Lange bridge power distribution network (102), and after being coupled by the Lange bridge, it is differentially output to the third port (163) and the fourth port (164). After being amplified by the balanced power amplifier circuit (103), it is input from the fifth port (165) and the sixth port (166) to the Lange bridge power combining network (104), and after being coupled by the Lange bridge, it is power combined to the eighth port (168) for output. At this time, there is no signal output at the seventh port (167).

8. The dual-polarization amplifier circuit structure according to claim 7, characterized in that, Half of the input power of the first port (161) is directly transmitted to the fourth port (164), and the other half is coupled to the third port (163); the signal phase of the fourth port (164) leads the signal phase of the third port (163) by 90°; the signals of the fourth port (164) and the third port (163) are amplified to the sixth port (166) and the fifth port (165) respectively; the differential signals of the fifth port (165) and the sixth port (166) are coupled and distributed through the Lange bridge power combining network (104), half of the signal of the sixth port (166) is directly transmitted to the seventh port (167), and the other half is coupled to the eighth port (168), and the first through signal (171) on the seventh port (167) is transmitted directly to the seventh port (167). The phase of the signal at the eighth port (165) is 90° ahead of the phase of the first coupled signal (172) at the eighth port (168); similarly, half of the signal at the fifth port (165) is directly transmitted to the eighth port (168), and the other half is coupled to the seventh port (167). The phase of the second direct signal (173) at the eighth port (168) is 90° ahead of the phase of the second coupled signal (174) at the seventh port (167); the first direct signal (171) and the second coupled signal (174) at the seventh port (167) cancel each other out of phase; the second direct signal (172) and the second coupled signal (173) at the eighth port (168) are superimposed in phase, and the signal is output from the eighth port (168), while there is no signal output from the seventh port (167).

9. The dual-polarization amplifier circuit structure according to any one of claims 1 to 6, characterized in that, When the single-pole double-throw switch (101) selects the second series-parallel structure circuit (106) to be turned on, the injected signal is input from the second port (162) to the Lange bridge power distribution network (102) through the second series-parallel structure circuit (106). After being coupled by the Lange bridge, it is differentially output to the third port (163) and the fourth port (164). After being amplified by the balanced power amplifier circuit (103), it is input from the fifth port (165) and the sixth port (166) to the Lange bridge power combining network (104). After being coupled by the Lange bridge, it is power combined to the seventh port (167) for output. At this time, there is no signal output at the eighth port (168).

10. The dual-polarization amplifier circuit structure according to claim 9, characterized in that, Half of the input power of the second port (162) is directly transmitted to the third port (163), and the other half is coupled to the fourth port (164); the signal phase of the third port (163) leads the signal phase of the fourth port (164) by 90°; the signals of the fourth port (164) and the third port (163) are amplified to the sixth port (166) and the fifth port (165) respectively; the differential signals of the fifth port (165) and the sixth port (166) are coupled and distributed through the Lange bridge power combining network (104), half of the signal of the sixth port (166) is directly transmitted to the seventh port (167), and the other half is coupled to the eighth port (168), and the first through signal (171) on the seventh port (167) is transmitted directly to the seventh port (167). The phase of the signal at the eighth port (168) is 90° ahead of the phase of the first coupled signal (172) at the eighth port (168); similarly, half of the signal at the fifth port (165) is directly transmitted to the eighth port (168), and the other half is coupled to the seventh port (167). The phase of the second direct signal (173) at the eighth port (168) is 90° ahead of the phase of the second coupled signal (174) at the seventh port (167); the first direct signal (171) and the second coupled signal (174) at the seventh port (167) are in phase and superimposed; the second direct signal (172) and the second coupled signal (173) at the eighth port (168) are out of phase and cancel each other out. The signal is output from the seventh port (167), and there is no signal output from the eighth port (168).

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