CN213879768U - Solid-state power amplifier module for improving output power - Google Patents
Solid-state power amplifier module for improving output power Download PDFInfo
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- CN213879768U CN213879768U CN202022206139.5U CN202022206139U CN213879768U CN 213879768 U CN213879768 U CN 213879768U CN 202022206139 U CN202022206139 U CN 202022206139U CN 213879768 U CN213879768 U CN 213879768U
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Abstract
The application belongs to the field of radio frequency power amplifier design, and particularly relates to a solid-state power amplifier module for improving output power, which comprises a power amplifier and a power amplifier, wherein the power amplifier is used for amplifying an input signal; the circulator is used for conducting unidirectional conduction on the amplified input signal and preventing signal backflow, and is provided with an input interface, a first output interface and a second output interface, the input interface is connected with the power amplifier, the first output interface directly outputs a transmitting power signal, and the second output interface is connected with a directional coupler; the through end of the directional coupler is connected with a load. The isolator is changed into the circulator, the isolation function of the circulator can be realized, the directional coupler is moved to the branch line of the circulator from the radio frequency main link, the insertion loss of the directional coupler in the main line can be omitted, and the output power of the solid-state power amplifier module is effectively improved on the premise that the isolation and detection functions are unchanged.
Description
Technical Field
The application belongs to the field of radio frequency power amplifier design, and particularly relates to a solid-state power amplifier module for improving output power.
Background
In recent years, the application range of the solid-state power amplifier module is wider and wider, particularly, the manufacturing cost of the solid-state power amplifier module is reduced along with the improvement of the localization capability of the microwave transistor power amplifier, and meanwhile, due to the development of a large-scale manufacturing technology, the solid-state component is more favorable for batch production and debugging, and a larger stage is provided for the application of the solid-state power amplifier module in the field of radars. The solid-state power amplifier module is one of important components of an airborne radar transmitter, and the performance of the solid-state power amplifier module directly influences the performance of the transmitter, even the performance of the whole radar. The high-power radio-frequency signal synthesis device has the main function of providing high-power radio-frequency signals meeting requirements for the transmitter, and the transmitter can synthesize the output power of the plurality of solid-state power amplification modules through a power synthesis technology to realize high-power solid-state transmission.
The basic principle of the solid-state power amplifier module is shown in fig. 1, and the solid-state power amplifier module mainly comprises a power amplifier, an isolator and a directional coupler. The isolator is a two-port device, microwave energy can only flow in from an input end and flow out from an output end, and the isolator has a one-way transmission characteristic and ensures that an echo signal cannot reversely enter the power amplifier; the directional coupler is a reciprocal four-port device which shunts signals for power detection, the direct end outputs transmission power, and the coupling end outputs to power detection.
SUMMERY OF THE UTILITY MODEL
The output power is one of the key indexes of the solid-state power amplifier module, and the performance of the power amplifier module is directly influenced by the size of the output power value and the performance of the transmitter is influenced. Therefore, improving the output power as much as possible is the key point of designing the solid-state power amplifier module, and is an innovative point for promoting the development of the solid-state power amplifier module towards high power.
The application is used for improving output power's solid-state power amplifier module mainly includes:
a power amplifier for amplifying an input signal;
the circulator is used for conducting unidirectional conduction on the amplified input signal and preventing signal backflow, and is provided with an input interface, a first output interface and a second output interface, the input interface is connected with the power amplifier, the first output interface directly outputs a transmitting power signal, and the second output interface is connected with a directional coupler;
the through end of the directional coupler is connected with a load.
Preferably, the coupling degree of the directional coupler is determined according to the isolation degree of the circulator.
Preferably, the coupling degree C2 of the directional coupler is C1+ IL1-I2, where IL1 is the coupling degree of the original directional coupler before the isolator is replaced by the circulator for isolation, and I2 is the coupling degree of the original directional coupler before the isolator is replaced by the circulator for isolation.
Preferably, the circulator is a ferromagnetic circulator.
Preferably, the coupling end of the directional coupler is connected with the detection module.
The isolator is changed into the circulator, the isolation function of the circulator can be realized, the directional coupler is moved to the branch line of the circulator from the radio frequency main link, the insertion loss of the directional coupler in the main line can be omitted, and the output power of the solid-state power amplifier module is effectively improved on the premise that the isolation and detection functions are unchanged.
Drawings
Fig. 1 is a basic schematic diagram of a conventional solid-state power amplifier module.
Fig. 2 is a schematic diagram of an improved solid-state power amplifier module for increasing output power according to the present application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.
The application provides a solid-state power amplifier module for improving output power, as shown in fig. 2, mainly includes:
a power amplifier for amplifying an input signal;
the circulator is used for conducting unidirectional conduction on the amplified input signal and preventing signal backflow, and is provided with an input interface, a first output interface and a second output interface, the input interface is connected with the power amplifier, the first output interface directly outputs a transmitting power signal, and the second output interface is connected with a directional coupler;
the through end of the directional coupler is connected with a load.
In conjunction with fig. 1 and 2, the present application replaces the isolator with a circulator, the circulator and isolator being anisotropic microwave passive devices made of ferrite. The circulator is a three-port device, the isolator is a two-port device, and the isolator is formed by connecting one end of the circulator with a matched load.
Through changing the isolator into the circulator, move directional coupler from the radio frequency main link to 3 ports of circulator, make 2 ports of circulator direct output transmitting power, under the prerequisite that guarantees to keep apart and the unchangeable function of detection, output power has effectively been improved, the isolation function also can be realized to the circulator, move directional coupler from the radio frequency main link to circulator branch circuit, so can save the insertion loss of directional coupler at the main circuit, under the prerequisite that guarantees to keep apart and the unchangeable function of detection, effectively improve the output of solid-state power amplifier module.
Referring to fig. 1 and 2, the basic solid-state power amplifier module, the isolator and the directional coupler of fig. 1 each have an insertion loss of 0.5dBm, and the improved solid-state power amplifier module, the circulator only has an insertion loss of 0.5, and the influence of the insertion loss on the output power is shown in table 1 below, as shown in fig. 2.
TABLE 1 comparison of two solid-state power amplifier module principles
As can be seen from table 1, if the output power of the power amplifier is 52dBm, compared with the basic type, the insertion loss of the main link can be reduced by 0.5dB by the improved method, the output power is increased by 15W, and the improvement performance is obvious.
In some alternative embodiments, the degree of coupling of the directional coupler is determined by the degree of isolation of the circulator.
In some alternative embodiments, the through end of the directional coupler needs to be connected with a load, and the coupling end of the directional coupler is connected with the detection module, and the coupling degree of the directional coupler needs to be correspondingly reduced compared with that of the directional coupler. The coupling degree C2 of the directional coupler is C1+ IL1-I2, wherein IL1 is the coupling degree of the original directional coupler before a circulator replaces an isolator for isolation, and I2 is the coupling degree of the isolator before the circulator replaces the isolator for isolation.
In some alternative embodiments, the circulator is a ferromagnetic circulator. The circulator of the present application is a coaxial or waveguide packaged device based on passive ferromagnetic technology. Such type circulators can typically achieve very high isolation over their operating frequency range. The internal magnetic field generated during operation of the ferromagnetic circulator "forces" the radio frequency signal in each port to rotate as the magnetic field rotates, thereby preventing signal leakage in the opposite direction. Compared to cavity duplexers used in base stations and indoor telecommunication equipment, radio frequency circulators are smaller, generally lower in cost, and higher in isolation.
The solid-state power amplifier module has strong universality and easy realization, and can be widely applied to the solid-state power amplifier modules of a plurality of frequency bands.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (3)
1. A solid state power amplifier module for increasing output power, comprising:
a power amplifier for amplifying an input signal;
the circulator is used for conducting unidirectional conduction on the amplified input signal and preventing signal backflow, and is provided with an input interface, a first output interface and a second output interface, the input interface is connected with the power amplifier, the first output interface directly outputs a transmitting power signal, and the second output interface is connected with a directional coupler;
the through end of the directional coupler is connected with a load.
2. The solid state power amplifier module for boosting output power of claim 1 wherein said circulator is a ferromagnetic circulator.
3. The solid state power amplifier module for increasing output power of claim 1 wherein the coupling end of the directional coupler is connected to the detection module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022206139.5U CN213879768U (en) | 2020-09-30 | 2020-09-30 | Solid-state power amplifier module for improving output power |
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| CN202022206139.5U CN213879768U (en) | 2020-09-30 | 2020-09-30 | Solid-state power amplifier module for improving output power |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115021775A (en) * | 2022-05-30 | 2022-09-06 | 中国电信股份有限公司 | Coupling device, signal equalization method and indoor distribution system |
| WO2023241394A1 (en) * | 2022-06-15 | 2023-12-21 | 华为技术有限公司 | Circulator, power amplifier module, and communication device |
| WO2024082114A1 (en) * | 2022-10-18 | 2024-04-25 | 华为技术有限公司 | Power amplifier device, remote radio unit, and base station |
-
2020
- 2020-09-30 CN CN202022206139.5U patent/CN213879768U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115021775A (en) * | 2022-05-30 | 2022-09-06 | 中国电信股份有限公司 | Coupling device, signal equalization method and indoor distribution system |
| CN115021775B (en) * | 2022-05-30 | 2023-09-05 | 中国电信股份有限公司 | Coupling device, signal equalization method and indoor distribution system |
| WO2023241394A1 (en) * | 2022-06-15 | 2023-12-21 | 华为技术有限公司 | Circulator, power amplifier module, and communication device |
| WO2024082114A1 (en) * | 2022-10-18 | 2024-04-25 | 华为技术有限公司 | Power amplifier device, remote radio unit, and base station |
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