CN211701981U - Vehicle-mounted broadband amplification circuit with adjustable gain - Google Patents
Vehicle-mounted broadband amplification circuit with adjustable gain Download PDFInfo
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- CN211701981U CN211701981U CN202020691254.3U CN202020691254U CN211701981U CN 211701981 U CN211701981 U CN 211701981U CN 202020691254 U CN202020691254 U CN 202020691254U CN 211701981 U CN211701981 U CN 211701981U
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Abstract
The utility model relates to a vehicle-mounted broadband amplifying circuit technical field discloses a vehicle-mounted broadband amplifying circuit of adjustable gain, including signal feed-in module, input ESD electrostatic protection module, signal input matching circuit module, first-level broadband amplifying circuit module, adjustable signal attenuation module, intermediate signal matching circuit module, second-level broadband amplifying circuit module, output matching circuit module, isolation circuit module, output ESD electrostatic protection module, power supply reverse connection protection module, signal feedback module, ground circuit module, DC power supply module; the utility model discloses have small, compatible multifrequency signal amplification function, take gain adjustable function, it is with low costs, preparation simple process is of value to large-scale production.
Description
Technical Field
The utility model relates to an on-vehicle wide band amplifier circuit technical field specifically is an on-vehicle wide band amplifier circuit of adjustable gain.
Background
In recent years, the global economy has been demanding more and more on satellite positioning, and currently, the global positioning system mainly includes: the Beidou satellite navigation System (BDS) and the United states GPS, Russian GLONASS, European Union GALILEO. In different areas and different places, joint positioning by adopting a plurality of systems has become a trend, for example, more areas in China use GPS L1 and Beidou B1 at the same time; in Russian regions, more combined positioning methods such as GPS L1 and GLONASS L1 are used.
The existing solution is to adopt the multi-frequency antenna to receive simultaneously, and the received multi-frequency signal is amplified in a shunt way to avoid the interference between the multi-frequency signals, and then the multi-frequency signals are combined. The method for amplifying antenna signals at multiple frequency points and multiple paths causes the phenomena of terminal volume increase and inconvenient carrying, and hinders the use of positioning combination of various satellite navigation systems, so that the application provides a gain-adjustable vehicle-mounted broadband amplifying circuit.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an on-vehicle wide band amplifier circuit of adjustable gain to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a gain-adjustable vehicle-mounted broadband amplifying circuit comprises a signal feed-in module, an input end ESD electrostatic protection module, a signal input matching circuit module, a primary broadband amplifying circuit module, an adjustable signal attenuation module, a middle signal matching circuit module, a secondary broadband amplifying circuit module, an output matching circuit module, an isolation circuit module, an output end ESD electrostatic protection module, a power supply reverse connection protection module, a signal feed-out module, a grounding circuit module and a direct current power supply module;
the signal feed-in module is connected with one end of the signal input matching circuit module;
the signal feed-in module and the signal input matching circuit module are connected with one end of the input end ESD electrostatic protection module;
the other end of the input end ESD electrostatic protection module is connected with a ground wire of the whole circuit;
the other end of the signal input matching circuit module is connected with the signal input end of the first-stage broadband amplifying circuit module;
the signal output end of the primary broadband amplifying circuit module is connected with one end of the adjustable signal attenuation module;
the other end of the adjustable signal attenuation module is connected with one end of the intermediate signal matching circuit module;
the other end of the intermediate signal matching circuit module is connected with the signal input end of the secondary broadband amplifying circuit module;
the signal output end of the second-stage broadband amplifying circuit module is connected with one end of the output matching circuit module;
and the other end of the output matching circuit module is connected with the signal end of the isolation circuit module.
As a further aspect of the present invention: the isolation circuit module has three ports, which are respectively: signal end, power end, hybrid end.
As a further aspect of the present invention: and the power end of the isolation circuit module is connected with one end of the direct current power supply module.
As a further aspect of the present invention: and the mixing end of the isolation circuit module is connected with the signal feed-out module.
As a further aspect of the present invention: the mixing end of the isolation circuit module is connected with the signal feed-out module and one end of the output end ESD electrostatic protection module.
As a further aspect of the present invention: and the other end of the output end ESD electrostatic protection module is connected with the ground wire of the whole circuit.
As a further aspect of the present invention: and the mixing end of the isolation circuit module and the signal feed-out module are connected with one end of the power supply reverse connection protection module.
As a further aspect of the present invention: and the other end of the power supply reverse connection protection module is connected with the ground wire of the whole circuit.
As a further aspect of the present invention: the grounding circuit module is connected with the ground wire of the whole circuit and is not connected with other signal wires and power supply wires.
As a further aspect of the present invention: the other end of the direct current power supply module is connected with the direct current power supply part in the amplifying circuit and is not connected with the ground wire.
Compared with the prior art, the beneficial effects of the utility model are that:
compared with the prior art, the utility model discloses have small, compatible multifrequency signal amplification function, take gain adjustable function, it is with low costs, preparation simple process is of value to large-scale production.
Drawings
Fig. 1 is a schematic diagram of a gain-adjustable vehicle-mounted broadband amplification circuit.
In the figure: 1. a signal feed-in module; 2. an input end ESD electrostatic protection module; 3. a signal input matching circuit module; 4. a first-stage broadband amplifying circuit module; 5. an adjustable signal attenuation module; 6. an intermediate signal matching circuit module; 7. a second-stage broadband amplifying circuit module; 8. an output matching circuit module; 9. an isolation circuit module; 10. an output end ESD electrostatic protection module; 11. a signal feed-out module; 12. a ground circuit module; 13. the power supply reverse connection protection module; 14. and the direct current power supply module.
Detailed Description
Referring to fig. 1, in an embodiment of the present invention, a gain-adjustable vehicle-mounted wideband amplifier circuit includes a signal feed-in module 1, an input ESD electrostatic protection module 2, a signal input matching circuit module 3, a first-stage wideband amplifier circuit module 4, an adjustable signal attenuation module 5, a middle signal matching circuit module 6, a second-stage wideband amplifier circuit module 7, an output matching circuit module 8, an isolation circuit module 9, an output ESD electrostatic protection module 10, a power reverse connection protection module 13, a signal feed-out module 11, a ground circuit module 12, and a dc power supply module 14;
the signal feed-in module 1 is connected with one end of the signal input matching circuit module 3;
the signal feed-in module 1 is connected with the signal input matching circuit module 3 through one end of the input end ESD electrostatic protection module 2;
the other end of the input end ESD electrostatic protection module 2 is connected with the ground wire of the whole circuit;
the other end of the signal input matching circuit module 3 is connected with the signal input end of the first-stage broadband amplifying circuit module 4;
the signal output end of the primary broadband amplifying circuit module 4 is connected with one end of the adjustable signal attenuation module 5;
the other end of the adjustable signal attenuation module 5 is connected with one end of the intermediate signal matching circuit module 6;
the other end of the intermediate signal matching circuit module 6 is connected with the signal input end of the secondary broadband amplifying circuit module 7;
the signal output end of the second-stage broadband amplifying circuit module 7 is connected with one end of an output matching circuit module 8;
the other end of the output matching circuit module 8 is connected with the signal end of the isolation circuit module 9.
Preferably, the isolation circuit module 9 has three ports, which are: signal end, power end, hybrid end.
Preferably, the power end of the isolation circuit module 9 is connected to one end of the dc power supply module.
Preferably, the mixing terminal of the isolation circuit module 9 is connected to the signal feed-out module 11.
Preferably, the mixing end of the isolation circuit module 9 is connected with the signal feed-out module 11 and one end of the output end ESD electrostatic protection module 10.
Preferably, the other end of the output terminal ESD electrostatic protection module 10 is connected to the ground of the whole circuit.
Preferably, one end of the power supply reverse connection protection module 13 is further connected between the mixing end of the isolation circuit module 9 and the signal feed-out module 11.
Preferably, the other end of the reverse power protection module 13 is connected to the ground of the whole circuit.
A grounding circuit module 12 arranged in a vehicle-mounted broadband amplifying circuit with adjustable gain is characterized in that the grounding circuit module 12 is connected with a ground wire of the whole circuit and is not connected with other signal wires and a power supply wire.
A direct current power supply module 14 of a vehicle-mounted broadband amplifying circuit with adjustable gain is arranged, wherein the other end of the direct current power supply module 14 is connected with a direct current power supply part in the amplifying circuit and is not connected with a ground wire.
A vehicle-mounted wide-frequency amplification circuit with adjustable gain meets the design requirement of a wider frequency band, and can receive and amplify signals of all frequency bands in GPS, BDS second generation, BDS third generation, GLONASS and GALILEO under the normal condition.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. A vehicle-mounted broadband amplifying circuit with adjustable gain is characterized by comprising a signal feed-in module, an input end ESD electrostatic protection module, a signal input matching circuit module, a primary broadband amplifying circuit module, an adjustable signal attenuation module, a middle signal matching circuit module, a secondary broadband amplifying circuit module, an output matching circuit module, an isolation circuit module, an output end ESD electrostatic protection module, a power supply reverse connection protection module, a signal feed-out module, a grounding circuit module and a direct current power supply module;
the signal feed-in module is connected with one end of the signal input matching circuit module;
the signal feed-in module and the signal input matching circuit module are connected with one end of the input end ESD electrostatic protection module;
the other end of the input end ESD electrostatic protection module is connected with a ground wire of the whole circuit;
the other end of the signal input matching circuit module is connected with the signal input end of the first-stage broadband amplifying circuit module;
the signal output end of the primary broadband amplifying circuit module is connected with one end of the adjustable signal attenuation module;
the other end of the adjustable signal attenuation module is connected with one end of the intermediate signal matching circuit module;
the other end of the intermediate signal matching circuit module is connected with the signal input end of the secondary broadband amplifying circuit module;
the signal output end of the second-stage broadband amplifying circuit module is connected with one end of the output matching circuit module;
and the other end of the output matching circuit module is connected with the signal end of the isolation circuit module.
2. The vehicle-mounted broadband amplification circuit with adjustable gain of claim 1, wherein the isolation circuit module has three ports, which are respectively: signal end, power end, hybrid end.
3. The vehicle-mounted broadband amplification circuit with adjustable gain of claim 2, wherein the power supply end of the isolation circuit module is connected with one end of the DC power supply module.
4. The vehicle-mounted broadband amplification circuit with adjustable gain of claim 2, wherein the mixing end of the isolation circuit module is connected to the signal feed-out module.
5. The vehicle-mounted broadband amplification circuit with adjustable gain of claim 2, wherein the mixing end of the isolation circuit module is connected with the signal feed-out module and one end of the output end ESD protection module.
6. The vehicle-mounted broadband amplification circuit with adjustable gain of claim 2, wherein the mixing end of the isolation circuit module and the signal feed-out module are further connected with one end of a power supply reverse connection protection module.
7. The vehicle-mounted broadband gain-adjustable amplification circuit as claimed in claim 1, wherein the other end of the output end ESD electrostatic protection module is connected to the ground of the whole circuit.
8. The vehicle-mounted broadband amplification circuit with adjustable gain of claim 1, wherein the other end of the power reverse connection protection module is connected with the ground wire of the whole circuit.
9. The vehicle-mounted broadband amplification circuit with adjustable gain of claim 1, wherein the grounding circuit module is connected with the ground wire of the whole circuit, and is not connected with other signal wires and a power supply wire.
10. The vehicle-mounted broadband amplification circuit with adjustable gain of claim 1, wherein the other end of the DC power supply module is connected to a DC power supply part of the amplification circuit, and is not connected to a ground line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020691254.3U CN211701981U (en) | 2020-04-29 | 2020-04-29 | Vehicle-mounted broadband amplification circuit with adjustable gain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020691254.3U CN211701981U (en) | 2020-04-29 | 2020-04-29 | Vehicle-mounted broadband amplification circuit with adjustable gain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211701981U true CN211701981U (en) | 2020-10-16 |
Family
ID=72783501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020691254.3U Active CN211701981U (en) | 2020-04-29 | 2020-04-29 | Vehicle-mounted broadband amplification circuit with adjustable gain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211701981U (en) |
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2020
- 2020-04-29 CN CN202020691254.3U patent/CN211701981U/en active Active
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