CN116317986A - Power amplifier synthesizer - Google Patents
Power amplifier synthesizer Download PDFInfo
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- CN116317986A CN116317986A CN202310327762.1A CN202310327762A CN116317986A CN 116317986 A CN116317986 A CN 116317986A CN 202310327762 A CN202310327762 A CN 202310327762A CN 116317986 A CN116317986 A CN 116317986A
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- microstrip line
- coaxial cable
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- power amplifier
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
- H01P3/08—Microstrips; Strip lines
- H01P3/081—Microstriplines
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to the technical field of radio frequency, in particular to a power amplifier synthesis device, which comprises a first power amplifier output matching circuit and a second power amplifier output matching circuit, wherein the first power amplifier output matching circuit comprises a first power amplifier pair tube, a first group of impedance circuits and a first output end which are sequentially connected, and the second power amplifier output matching circuit comprises a second power amplifier pair tube, a second group of impedance circuits and a second output end which are sequentially connected; the combiner comprises a first input end, a second input end and a third output end; the first output end is connected with the first input end, the second output end is connected with the second input end, the output impedance of the first output end and the output impedance of the second output end are both smaller than 50 ohms, the input impedance of the first input end and the input impedance of the second input end are both smaller than 50 ohms, the output impedance of the third output end is 50 ohms, and the overall volume is effectively reduced, the loss is reduced, and the synthesis efficiency is improved by reducing the output impedance of the first output end, the second output end and the input impedance of the combiner input end.
Description
Technical Field
The invention relates to the technical field of radio frequency, in particular to a power amplifier synthesis device.
Background
The output of the existing ultra-wideband high-power amplifier is combined with a synthesizer, so that the output with higher power is obtained, wherein the power amplifier and the synthesis are separated, the power amplifier is required to be matched from low impedance to 50 ohms, and then the power amplifier is cascaded and synthesized in a 50 ohm system, so that the volume of the successful amplifier is larger, the volume of the synthesized part is also larger, the whole device is large in volume, and therefore, the loss is large, and the synthesis efficiency is lower.
Disclosure of Invention
The present invention has been made in view of the above-mentioned problems, and has as its object to provide a power amplifier synthesis apparatus which overcomes the above-mentioned problems or at least partially solves the above-mentioned problems.
The invention provides a power amplifier synthesis device, which comprises:
the power amplifier comprises a first power amplifier output matching circuit and a second power amplifier output matching circuit, wherein the first power amplifier output matching circuit comprises a first power amplifier pair tube, a first group of impedance cables and a first output end which are sequentially connected, and the second power amplifier output matching circuit comprises a second power amplifier pair tube, a second group of impedance cables and a second output end which are sequentially connected;
the combiner comprises a first input end, a second input end and a third output end and is used for combining and outputting the power of the input signals;
the first output end is connected with the first input end, the second output end is connected with the second input end, the output impedance of the first output end and the output impedance of the second output end are both smaller than 50 ohms, the input impedance of the first input end and the input impedance of the second input end are both smaller than 50 ohms, and the output impedance of the third output end is 50 ohms.
Preferably, the first power amplifier pair tube and the second power amplifier pair tube comprise a first power amplifier output end and a second power amplifier output end;
the first group of impedance cables and the second group of impedance cables comprise a first microstrip line, a second microstrip line, a first coaxial cable, a second coaxial cable, a third microstrip line, a fourth microstrip line, a fifth microstrip line, a sixth microstrip line, a seventh microstrip line, a first capacitor, a second capacitor, a third coaxial cable and an eighth microstrip line, and the first coaxial cable, the second coaxial cable and the third coaxial cable comprise an outer skin and an inner core;
the first microstrip line one end is connected with the first power amplifier output end, the second microstrip line one end is connected with the second power amplifier output end, the first microstrip line other end is connected with the outer cover of one end of the first coaxial cable, the inner core of one end of the first coaxial cable is connected with the second microstrip line other end, the second microstrip line other end is connected with the outer cover of one end of the second coaxial cable, the inner core of one end of the second coaxial cable is connected with the first microstrip line other end, the two ends of the third microstrip line are respectively connected with the inner core of the other end of the first coaxial cable and the inner core of the other end of the second coaxial cable, the outer cover of the other end of the first coaxial cable is connected with one end of the fourth microstrip line, the outer cover of the other end of the second coaxial cable is connected with one end of the seventh microstrip line through a first capacitor, the other end of the seventh microstrip line is connected with the sixth microstrip line through a second capacitor, the other end of the fifth microstrip line is connected with the outer cover of one end of the third coaxial cable, the sixth microstrip line is connected with the inner core of one end of the third coaxial cable, the outer cover of the other end of the third coaxial cable is grounded, the inner core of the other end of the third coaxial cable is connected with one end of the eighth microstrip line, the eighth microstrip line impedance is connected with the other end of the first microstrip line in the first group cable, the eighth microstrip line is connected with the eighth microstrip line input end is connected with the eighth microstrip line.
Preferably, the first microstrip line is used for increasing the output impedance of the output end of the first power amplifier by a first preset multiple, and the second microstrip line is used for increasing the output impedance of the output end of the second power amplifier by the first preset multiple;
the first coaxial cable is used for improving the output impedance by a second preset multiple, and the second coaxial cable is used for improving the output impedance by the second preset multiple;
the third coaxial cable is used for increasing the output impedance by a third preset multiple so that the output impedance of the first output end and the output impedance of the second output end are both smaller than 50 ohms.
Preferably, the characteristic impedance of the first coaxial cable and the characteristic impedance of the second coaxial cable are 12 ohms-17 ohms;
and the characteristic impedance of the third coaxial cable is 25-35 ohms.
Preferably, the combiner includes: a fourth coaxial cable, a fifth coaxial cable, a ninth microstrip line, a tenth microstrip line, a first isolation resistor, a second isolation resistor, and an eleventh microstrip line;
the inner core of one end of the fourth coaxial cable is connected with the first input end, the outer skin of one end of the fourth coaxial cable is connected with one end of the first isolation resistor, the other end of the first isolation resistor is connected with one end of the ninth microstrip line, and the other end of the ninth microstrip line is connected with the outer skin of the other end of the fourth coaxial cable and one end of the second isolation resistor;
the inner core of one end of the fifth coaxial cable is connected with the second input end, the outer skin of one end of the fifth coaxial cable is connected with the other end of the first isolation resistor, one end of the first isolation resistor is connected with one end of the tenth microstrip line, and the other end of the tenth microstrip line is connected with the outer skin of the other end of the fifth coaxial cable and the other end of the second isolation resistor;
the inner core of the other end of the fourth coaxial cable and the inner core of the other end of the fifth coaxial cable are connected to one end of an eleventh microstrip line, and the other end of the eleventh microstrip line is connected with a third output end.
Preferably, the characteristic impedance of the fourth coaxial cable and the characteristic impedance of the fifth coaxial cable are both 12 ohms-50 ohms.
Preferably, the input impedance of the first input terminal and the input impedance of the second input terminal are 12.5 ohms to 25 ohms.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
the invention provides a power amplifier synthesis device, which comprises a first power amplifier output matching circuit and a second power amplifier output matching circuit, wherein the first power amplifier output matching circuit comprises a first power amplifier pair tube, a first group of impedance circuits and a first output end which are sequentially connected, and the second power amplifier output matching circuit comprises a second power amplifier pair tube, a second group of impedance circuits and a second output end which are sequentially connected; the combiner comprises a first input end, a second input end and a third output end and is used for combining and outputting the power of the input signals; the first output end is connected with the first input end, the second output end is connected with the second input end, the output impedance of the first output end and the output impedance of the second output end are both smaller than 50 ohms, the input impedance of the first input end and the input impedance of the second input end are both smaller than 50 ohms, the output impedance of the third output end is 50 ohms, and then the overall volume of the power amplifier module is effectively reduced by reducing the output impedance of the first output end and the output impedance of the second output end, the input impedance of the combiner input end is reduced, the volume of the combiner is further reduced, the overall volume is further reduced, the loss is reduced, and the synthesis efficiency is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also throughout the drawings, like reference numerals are used to designate like parts. In the drawings:
fig. 1 shows a schematic structural diagram of a power amplifier synthesizing device in an embodiment of the invention;
fig. 2 is a schematic diagram showing a specific structure of a power amplifier synthesizing device in an embodiment of the invention;
FIG. 3 is a schematic diagram of signal gain variation in an embodiment of the invention;
fig. 4 is a schematic diagram showing the change of the power amplifier efficiency with the frequency in the embodiment of the invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
An embodiment of the present invention provides a power amplifier synthesis apparatus, as shown in fig. 1, including:
the first power amplifier output matching circuit 101 and the second power amplifier output matching circuit 102, wherein the first power amplifier output matching circuit 101 comprises a first power amplifier pair tube 1011, a first group of impedance cables 1012 and a first output end 1013 which are connected in sequence, and the second power amplifier output matching circuit 102 comprises a second power amplifier pair tube 1021, a second group of impedance circuits 1022 and a second output end 1023 which are connected in sequence;
the combiner 103 includes a first input terminal 1031, a second input terminal 1032, and a third output terminal 1033, and is configured to combine and output power of the input signals;
the first output 1013 is connected to the first input 1031, the second output 1023 is connected to the second input 1032, the output impedance of the first output and the output impedance of the second output are both less than 50 ohms, the input impedance of the first input and the input impedance of the second input are both less than 50 ohms, and the output impedance of the third output is 50 ohms.
By reducing the output impedance of the first output terminal 1013 and the second output terminal 1023, the adopted impedance transformation line is reduced, the overall volume of the power amplifier module is effectively reduced, the input impedance of the input terminal of the combiner 103 is reduced, the volume of the combiner 103 is also reduced, the overall volume is further reduced, the loss is reduced, and the synthesis efficiency is improved.
The specific structures of the first power amplifier output matching circuit 101 and the second power amplifier output matching circuit 102 are specifically described in detail below. As shown in fig. 2.
The first power amplifier output matching circuit 101 and the second power amplifier output matching circuit 102 have the same structure, and the first power amplifier output matching circuit 101 is described in detail for the sake of:
the first power amplifier output matching circuit 101 includes a first power amplifier pair tube 1011, a first group of impedance circuits 1012 and a first output end 1013 connected in sequence, wherein the first power amplifier pair tube 1011 includes a first power amplifier output end and a second power amplifier output end, and similarly the second power amplifier pair tube 1021 also includes a first power amplifier output end and a second power amplifier output end, specifically, two output ends for two power amplifier tubes.
The first group of impedance cables 1012 and the second group of impedance cables 1022 each include a first microstrip line 2, a second microstrip line 3, a first coaxial cable 5, a second coaxial cable 4, a third microstrip line 6, a fourth microstrip line 8, a fifth microstrip line 11, a sixth microstrip line 10, a seventh microstrip line 7, a first capacitor 91, a second capacitor 92, a third coaxial cable 12, and an eighth microstrip line 13, and the first coaxial cable 5, the second coaxial cable 4, and the third coaxial cable 12 each include an outer skin and an inner core.
Specifically, one end of the first microstrip line 2 is connected with the first power amplifier output end to increase the impedance output by the first power amplifier output end to a first preset impedance, one end of the second microstrip line 3 is connected with the second power amplifier output end to increase the impedance output by the second power amplifier output end to a first preset impedance, the other end of the first microstrip line 2 is connected with the outer skin of one end of the first coaxial cable 5, the inner core of one end of the first coaxial cable 5 is connected with the other end of the second microstrip line 3, the other end of the second microstrip line 3 is connected with the outer skin of one end of the second coaxial cable 4, the inner core of the second coaxial cable 4 is connected with the other end of the first microstrip line 2, two ends of the third microstrip line 6 are respectively connected with the inner core of the other end of the first coaxial cable 5 and the inner core of the other end of the second coaxial cable 4, and the outer skin of the other end of the first coaxial cable 5 is connected with one end of the fourth microstrip line 8, the sheath at the other end of the second coaxial cable 4 is connected with one end of a seventh microstrip line, the other end of the fourth microstrip line 8 is connected with one end of a fifth microstrip line 11 through a first capacitor 91, the other end of the seventh microstrip line 7 is connected with one end of a sixth microstrip line 11 through a second capacitor 92, the other end of the fifth microstrip line 11 is connected with the sheath at one end of a third coaxial cable 12, the sixth microstrip line 10 is connected with the inner core at one end of the third coaxial cable 12, the sheath at the other end of the third coaxial cable 12 is grounded, the inner core at the other end of the third coaxial cable 12 is connected with one end of an eighth microstrip line 13, in the first group of impedance cables 101, the other end of the eighth microstrip line 13 is connected with a first input end 1031, and in the second group of impedance cables 102, the other end of the eighth microstrip line 13 is connected with a second input end 1032.
The first capacitor 91 and the second capacitor 92 are dc blocking capacitors, so that the rf signal can be ensured to pass through, and the dc signal cannot pass through.
The first microstrip line 2 is used for increasing the output impedance of the output end of the first power amplifier by a first preset multiple, and the second microstrip line 3 is used for increasing the output impedance of the output end of the second power amplifier by the first preset multiple; if the output of the first power amplifier pair tube is 1.5 ohms, the output impedance is 3 ohms when passing through the first microstrip line 2 and the second microstrip line 3.
Next, the first coaxial cable 5 is used to increase the output impedance by a second preset multiple, the second coaxial cable 4 is used to increase the output impedance by a second preset multiple, and before the first coaxial cable 5 and the second coaxial cable 4, the output impedance is 3 ohms, and after passing through the first coaxial cable 5 and the second coaxial cable 4, the output impedance is 12 ohms.
Next, after passing through the third coaxial cable 12, the output impedance rises from 12 ohms to 25 ohms.
Specifically, the characteristic impedance of the first coaxial cable 5 and the characteristic impedance of the second coaxial cable 4 are both 12 to 17 ohms. The characteristic impedance of the third coaxial cable 13 is 25 to 35 ohms.
By reducing the output impedance of the first output 1013 of the first power amplifier output matching circuit 101 and the output impedance of the second output 1023 of the second power amplifier output matching circuit 102, the number of coaxial cables is effectively reduced, so as to reduce the volume of the whole power amplifier. Wherein the output impedance of the first output 1013 and the output impedance of the second output 1023 are both less than 50 ohms. Specifically, the resistance can be 12.5 to 25 ohms. Too small a size is not possible, which would reduce the power of the rf signal and not facilitate transmission.
Next, the combiner 103 specifically includes: a fourth coaxial cable 15, a fifth coaxial cable 18, a ninth microstrip line 14, a tenth microstrip line 17, a first isolation resistor 161, a second isolation resistor 162, and an eleventh microstrip line 19.
The inner core of one end of the fourth coaxial cable 15 is connected to the first input end 1031, the outer skin of one end of the fourth coaxial cable 15 is connected to one end of the first isolation resistor 161, the other end of the first isolation resistor 161 is connected to one end of the ninth microstrip line 14, and the outer skin of the other end of the fourth coaxial cable 15 and the other end of the second isolation resistor 162 are connected to the other end of the ninth microstrip line 14.
The inner core of one end of the fifth coaxial cable 18 is connected to the second input end 1032, the outer skin of one end of the fifth coaxial cable 18 is connected to the other end of the first isolation resistor 161, one end of the first isolation resistor 162 is connected to one end of the tenth microstrip line 17, and the other end of the tenth microstrip line 17 is connected to the outer skin of the other end of the fifth coaxial cable and the other end of the second isolation resistor.
The inner core of the other end of the fourth coaxial cable 15 and the inner core of the other end of the fifth coaxial cable 18 are both connected to one end of the eleventh microstrip line 19, and the other end of the eleventh microstrip line 19 is connected to the third output terminal 1033.
The characteristic impedance of the fourth coaxial cable 15 and the characteristic impedance of the fifth coaxial cable 18 are both 12 to 50 ohms.
The input impedance of the first input terminal 1031 and the input impedance of the second input terminal 1032 of the combiner 103 are both less than 50 ohms, specifically 12.5 ohms to 25 ohms. By reducing the input impedance of the combiner 103, the number of coaxial cables in the combiner is reduced, and the overall volume of the combiner 103 is effectively reduced.
The low input impedance combiner 103 is adopted, so that the impedance at the connection part of the two input ends of the combiner 103 and the first power amplifier output matching circuit 101 and the second power amplifier output matching circuit 102 is consistent, the two input ends are directly connected and are subjected to conjugate matching, and the two input ends are combined at the low impedance without being respectively matched to 50 ohms. By adopting the sub-circuit structure, not only is the redundant circuit structure omitted and the insertion loss reduced, but also the broadband matching of the power amplifier is easier, and the difficulty of the broadband matching of the power amplifier is broken through.
The test data shown in the following table is adopted to obtain the corresponding signal gain and the change of the power amplification efficiency along with the frequency through the power amplification synthesis device, as shown in fig. 3 and 4.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
the invention provides a power amplifier synthesis device, which comprises a first power amplifier output matching circuit and a second power amplifier output matching circuit, wherein the first power amplifier output matching circuit comprises a first power amplifier pair tube, a first group of impedance circuits and a first output end which are sequentially connected, and the second power amplifier output matching circuit comprises a second power amplifier pair tube, a second group of impedance circuits and a second output end which are sequentially connected; the combiner comprises a first input end, a second input end and a third output end and is used for combining and outputting the power of the input signals; the first output end is connected with the first input end, the second output end is connected with the second input end, the output impedance of the first output end and the output impedance of the second output end are both smaller than 50 ohms, the input impedance of the first input end and the input impedance of the second input end are both smaller than 50 ohms, the output impedance of the third output end is 50 ohms, and then the overall volume of the power amplifier module is effectively reduced by reducing the output impedance of the first output end and the output impedance of the second output end, the input impedance of the combiner input end is reduced, the volume of the combiner is further reduced, the overall volume is further reduced, the loss is reduced, and the synthesis efficiency is improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. The utility model provides a power amplifier synthesizer which characterized in that includes:
the power amplifier comprises a first power amplifier output matching circuit and a second power amplifier output matching circuit, wherein the first power amplifier output matching circuit comprises a first power amplifier pair tube, a first group of impedance cables and a first output end which are sequentially connected, and the second power amplifier output matching circuit comprises a second power amplifier pair tube, a second group of impedance cables and a second output end which are sequentially connected;
the combiner comprises a first input end, a second input end and a third output end and is used for combining and outputting the power of the input signals;
the first output end is connected with the first input end, the second output end is connected with the second input end, the output impedance of the first output end and the output impedance of the second output end are both smaller than 50 ohms, the input impedance of the first input end and the input impedance of the second input end are both smaller than 50 ohms, and the output impedance of the third output end is 50 ohms.
2. The power amplifier synthesis apparatus of claim 1, wherein the first power amplifier pair and the second power amplifier pair each comprise a first power amplifier output and a second power amplifier output;
the first group of impedance cables and the second group of impedance cables comprise a first microstrip line, a second microstrip line, a first coaxial cable, a second coaxial cable, a third microstrip line, a fourth microstrip line, a fifth microstrip line, a sixth microstrip line, a seventh microstrip line, a first capacitor, a second capacitor, a third coaxial cable and an eighth microstrip line, and the first coaxial cable, the second coaxial cable and the third coaxial cable comprise an outer skin and an inner core;
the first microstrip line one end is connected with the first power amplifier output end, the second microstrip line one end is connected with the second power amplifier output end, the first microstrip line other end is connected with the outer cover of one end of the first coaxial cable, the inner core of one end of the first coaxial cable is connected with the second microstrip line other end, the second microstrip line other end is connected with the outer cover of one end of the second coaxial cable, the inner core of one end of the second coaxial cable is connected with the first microstrip line other end, the two ends of the third microstrip line are respectively connected with the inner core of the other end of the first coaxial cable and the inner core of the other end of the second coaxial cable, the outer cover of the other end of the first coaxial cable is connected with one end of the fourth microstrip line, the outer cover of the other end of the second coaxial cable is connected with one end of the seventh microstrip line through a first capacitor, the other end of the seventh microstrip line is connected with the sixth microstrip line through a second capacitor, the other end of the fifth microstrip line is connected with the outer cover of one end of the third coaxial cable, the sixth microstrip line is connected with the inner core of one end of the third coaxial cable, the outer cover of the other end of the third coaxial cable is grounded, the inner core of the other end of the third coaxial cable is connected with one end of the eighth microstrip line, the eighth microstrip line impedance is connected with the other end of the first microstrip line in the first group cable, the eighth microstrip line is connected with the eighth microstrip line input end is connected with the eighth microstrip line.
3. The power amplifier synthesis apparatus of claim 2, wherein the first microstrip line is configured to increase the output impedance of the first power amplifier output by a first preset factor, and the second microstrip line is configured to increase the output impedance of the second power amplifier output by the first preset factor;
the first coaxial cable is used for improving the output impedance by a second preset multiple, and the second coaxial cable is used for improving the output impedance by the second preset multiple;
the third coaxial cable is used for increasing the output impedance by a third preset multiple so that the output impedance of the first output end and the output impedance of the second output end are both smaller than 50 ohms.
4. The power amplifier synthesizing apparatus according to claim 2, wherein the characteristic impedance of the first coaxial cable and the characteristic impedance of the second coaxial cable are 12 ohm to 17 ohm;
and the characteristic impedance of the third coaxial cable is 25-35 ohms.
5. The power amplifier synthesizing apparatus of claim 1, wherein the combiner comprises:
a fourth coaxial cable, a fifth coaxial cable, a ninth microstrip line, a tenth microstrip line, a first isolation resistor, a second isolation resistor, and an eleventh microstrip line;
the inner core of one end of the fourth coaxial cable is connected with the first input end, the outer skin of one end of the fourth coaxial cable is connected with one end of the first isolation resistor, the other end of the first isolation resistor is connected with one end of the ninth microstrip line, and the other end of the ninth microstrip line is connected with the outer skin of the other end of the fourth coaxial cable and one end of the second isolation resistor;
the inner core of one end of the fifth coaxial cable is connected with the second input end, the outer skin of one end of the fifth coaxial cable is connected with the other end of the first isolation resistor, one end of the first isolation resistor is connected with one end of the tenth microstrip line, and the other end of the tenth microstrip line is connected with the outer skin of the other end of the fifth coaxial cable and the other end of the second isolation resistor;
the inner core of the other end of the fourth coaxial cable and the inner core of the other end of the fifth coaxial cable are connected to one end of an eleventh microstrip line, and the other end of the eleventh microstrip line is connected with a third output end.
6. The power amplifier combining apparatus of claim 1, wherein the characteristic impedance of the fourth coaxial cable and the characteristic impedance of the fifth coaxial cable are both 12 ohms to 50 ohms.
7. The power amplifier combining device of claim 1, wherein the input impedance of the first input terminal and the input impedance of the second input terminal are 12.5 ohms to 25 ohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310327762.1A CN116317986A (en) | 2023-03-30 | 2023-03-30 | Power amplifier synthesizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310327762.1A CN116317986A (en) | 2023-03-30 | 2023-03-30 | Power amplifier synthesizer |
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| Publication Number | Publication Date |
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| CN116317986A true CN116317986A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310327762.1A Pending CN116317986A (en) | 2023-03-30 | 2023-03-30 | Power amplifier synthesizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117728141A (en) * | 2024-02-08 | 2024-03-19 | 深圳市广能达半导体科技有限公司 | Transmission line system power synthesis method |
| CN117728141B (en) * | 2024-02-08 | 2024-05-31 | 深圳市广能达半导体科技有限公司 | Transmission line system power synthesis method |
-
2023
- 2023-03-30 CN CN202310327762.1A patent/CN116317986A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117728141A (en) * | 2024-02-08 | 2024-03-19 | 深圳市广能达半导体科技有限公司 | Transmission line system power synthesis method |
| CN117728141B (en) * | 2024-02-08 | 2024-05-31 | 深圳市广能达半导体科技有限公司 | Transmission line system power synthesis method |
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