CN204244181U - The amplifying circuit of analog signal of radiofrequency signal - Google Patents
The amplifying circuit of analog signal of radiofrequency signal Download PDFInfo
- Publication number
- CN204244181U CN204244181U CN201420611414.3U CN201420611414U CN204244181U CN 204244181 U CN204244181 U CN 204244181U CN 201420611414 U CN201420611414 U CN 201420611414U CN 204244181 U CN204244181 U CN 204244181U
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- resistance
- triode
- electric capacity
- signal
- inductance
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Abstract
The utility model discloses a kind of amplifying circuit of analog signal of radiofrequency signal, comprise the first resistance to the 14 resistance, the first electric capacity to the 8th electric capacity, the first triode to the 4th triode, the first inductance, the second inductance, voltage stabilizing didoe and power supply, the first end of described first electric capacity is signal input part.First triode of the amplifying circuit of analog signal of the utility model radiofrequency signal and the second triode are direct coupled amplifier, analog signal is exaggerated after the first electric capacity input, first triode and the negative feedback of the second triode composition parallel-current simultaneously, 3rd triode and the 4th triode composition series voltage negtive backword, reduce output impedance, signal exports after the 3rd triode and the 4th triode amplify, multiplication factor of the present utility model is about 12000 times, structure is simple, output resistance is low, has the value promoted the use of.
Description
Technical field
The utility model relates to a kind of amplifying circuit, particularly relates to a kind of amplifying circuit of analog signal of radiofrequency signal.
Background technology
Along with the progress of society and the development of science and technology, radio communication, the Internet, Internet of Things etc. start in the life of people and popularize in producing, these communications portion all rely on radiofrequency signal to carry out transmission of information, in whole radio communication, mainly comprise following several frequency: transmission frequency, receive frequency, intermediate frequency and base band frequency, general spectral range is 500MHz to 38GHz, data-signal also transmits under this high frequency, in general, radio system has the function of very powerful transmission modulation signal, even if when having interference signal and disabling signal, this system also can accomplish send with the highest quality and receive modulation signal with best sensitivity, after rf signal reception, need analog signal to amplify, but the multiplication factor of some amplifying circuit is inadequate, radiofrequency signal is reconciled unintelligible.
Utility model content
The purpose of this utility model is just the amplifying circuit of analog signal providing a kind of radiofrequency signal in order to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of amplifying circuit of analog signal of radiofrequency signal, comprise the first resistance to the 14 resistance, first electric capacity is to the 8th electric capacity, first triode is to the 4th triode, first inductance, second inductance, voltage stabilizing didoe and power supply, the first end of described first electric capacity is signal input part, second end of described first electric capacity is connected with the base stage of described first triode and the first end of described tenth resistance respectively, the collector electrode of described first triode is connected with the first end of described first resistance and the base stage of described second triode respectively, second end of described first resistance respectively with the first end of described second electric capacity, the first end of described second resistance is connected with the first end of described first inductance, second end ground connection of described second electric capacity, second end of described first inductance is connected with the first end of described 3rd resistance, second end of described 3rd resistance is connected with the collector electrode of described second triode and the first end of described 4th electric capacity respectively, the emitter of described second triode is connected with the negative pole of described voltage stabilizing didoe and the first end of described 5th electric capacity respectively, the positive pole of described voltage stabilizing didoe respectively with the second end of described 5th electric capacity, second end of described tenth resistance is connected with the first end of described 11 resistance, the emitter of described first triode is connected with the first end of described 9th resistance and the first end of described 7th electric capacity respectively, second end of described second resistance is connected with the first end of described second inductance and the first end of described 3rd electric capacity respectively, second end ground connection of described 3rd electric capacity, second end of described second inductance respectively with the first end of described 4th resistance, the first end of described 5th resistance, the first end of described 7th resistance is connected with the positive pole of described power supply, second end of described 4th resistance respectively with the second end of described 4th electric capacity, the base stage of described 3rd triode is connected with the first end of described 12 resistance, second end of described 5th resistance is connected with the first end of described 6th resistance and the first end of described 6th electric capacity respectively, second end ground connection of described 6th electric capacity, second end of described 6th resistance is connected with the collector electrode of described 3rd triode and the first end of described 8th resistance respectively, the emitter of described 3rd triode is connected with the first end of described 13 resistance and the base stage of described 4th triode respectively, the emitter of described 4th triode is connected with the first end of described 14 resistance and the first end of described 8th electric capacity respectively, second end of described 7th resistance is connected with the second end of described 8th resistance and the collector electrode of described 4th triode respectively, the current collection very signal output part of described 4th triode, the negative pole of described power supply respectively with the second end of described 8th electric capacity, described 14 resistance is at the second end, second end of described 13 resistance, second end of described 12 resistance, second end of described 11 resistance, second end of described 7th electric capacity is connected with the second end of described 9th resistance.
The beneficial effects of the utility model are:
First triode of the amplifying circuit of analog signal of the utility model radiofrequency signal and the second triode are direct coupled amplifier, analog signal is exaggerated after the first electric capacity input, first triode and the negative feedback of the second triode composition parallel-current simultaneously, 3rd triode and the 4th triode composition series voltage negtive backword, reduce output impedance, signal exports after the 3rd triode and the 4th triode amplify, and multiplication factor of the present utility model is about 12000 times, structure is simple, exports resistance low.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the amplifying circuit of analog signal of the utility model radiofrequency signal.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the amplifying circuit of analog signal of the utility model radiofrequency signal, comprise the first resistance R1 to the 14 resistance R14, first electric capacity C1 is to the 8th electric capacity C8, first triode T1 is to the 4th triode T4, first inductance L 1, second inductance L 2, voltage stabilizing didoe ZD and power supply E, the first end of the first electric capacity C1 is signal input part, second end of the first electric capacity C1 is connected with the base stage of the first triode T1 and the first end of the tenth resistance R10 respectively, the collector electrode of the first triode T1 is connected with the first end of the first resistance R1 and the base stage of the second triode T2 respectively, second end of the first resistance R1 respectively with the first end of the second electric capacity C2, the first end of the second resistance R2 is connected with the first end of the first inductance L 1, the second end ground connection of the second electric capacity C2, second end of the first inductance L 1 is connected with the first end of the 3rd resistance R3, second end of the 3rd resistance R3 is connected with the collector electrode of the second triode T2 and the first end of the 4th electric capacity C4 respectively, the emitter of the second triode T2 is connected with the negative pole of voltage stabilizing didoe ZD and the first end of the 5th electric capacity C5 respectively, the positive pole of voltage stabilizing didoe ZD respectively with second end of the 5th electric capacity C5, second end of the tenth resistance R10 is connected with the first end of the 11 resistance R11, the emitter of the first triode T1 is connected with the first end of the 9th resistance R9 and the first end of the 7th electric capacity C7 respectively, second end of the second resistance R2 is connected with the first end of the second inductance L 2 and the first end of the 3rd electric capacity C3 respectively, the second end ground connection of the 3rd electric capacity C3, second end of the second inductance L 2 respectively with the first end of the 4th resistance R4, the first end of the 5th resistance R5, the first end of the 7th resistance R7 is connected with the positive pole of power supply E, second end of the 4th resistance R4 respectively with second end of the 4th electric capacity C4, the base stage of the 3rd triode T3 is connected with the first end of the 12 resistance R12, second end of the 5th resistance R5 is connected with the first end of the 6th resistance R6 and the first end of the 6th electric capacity C6 respectively, the second end ground connection of the 6th electric capacity C6, second end of the 6th resistance R6 is connected with the collector electrode of the 3rd triode T3 and the first end of the 8th resistance R8 respectively, the emitter of the 3rd triode T3 is connected with the first end of the 13 resistance R13 and the base stage of the 4th triode T4 respectively, the emitter of the 4th triode T4 is connected with the first end of the 14 resistance R14 and the first end of the 8th electric capacity C8 respectively, second end of the 7th resistance R7 is connected with second end of the 8th resistance R8 and the collector electrode of the 4th triode T4 respectively, the current collection very signal output part of the 4th triode T4, the negative pole of power supply E respectively with second end of the 8th electric capacity C8, 14 resistance R14 is at the second end, second end of the 13 resistance R13, second end of the 12 resistance R12, second end of the 11 resistance R11, second end of the 7th electric capacity C7 is connected with second end of the 9th resistance R9.
The operation principle of the amplifying circuit of analog signal of the utility model radiofrequency signal is as follows:
First triode T1 and the second triode T2 of amplifying circuit are direct coupled amplifier, analog signal is exaggerated after the first electric capacity C1 inputs, first triode T1 and the second triode T2 forms parallel-current negative feedback simultaneously, 3rd triode T3 and the 4th triode T4 forms series voltage negtive backword, reduce output impedance, signal exports after the 3rd triode T3 and the 4th triode T4 amplifies.
Claims (1)
1. the amplifying circuit of analog signal of a radiofrequency signal, it is characterized in that: comprise the first resistance to the 14 resistance, first electric capacity is to the 8th electric capacity, first triode is to the 4th triode, first inductance, second inductance, voltage stabilizing didoe and power supply, the first end of described first electric capacity is signal input part, second end of described first electric capacity is connected with the base stage of described first triode and the first end of described tenth resistance respectively, the collector electrode of described first triode is connected with the first end of described first resistance and the base stage of described second triode respectively, second end of described first resistance respectively with the first end of described second electric capacity, the first end of described second resistance is connected with the first end of described first inductance, second end ground connection of described second electric capacity, second end of described first inductance is connected with the first end of described 3rd resistance, second end of described 3rd resistance is connected with the collector electrode of described second triode and the first end of described 4th electric capacity respectively, the emitter of described second triode is connected with the negative pole of described voltage stabilizing didoe and the first end of described 5th electric capacity respectively, the positive pole of described voltage stabilizing didoe respectively with the second end of described 5th electric capacity, second end of described tenth resistance is connected with the first end of described 11 resistance, the emitter of described first triode is connected with the first end of described 9th resistance and the first end of described 7th electric capacity respectively, second end of described second resistance is connected with the first end of described second inductance and the first end of described 3rd electric capacity respectively, second end ground connection of described 3rd electric capacity, second end of described second inductance respectively with the first end of described 4th resistance, the first end of described 5th resistance, the first end of described 7th resistance is connected with the positive pole of described power supply, second end of described 4th resistance respectively with the second end of described 4th electric capacity, the base stage of described 3rd triode is connected with the first end of described 12 resistance, second end of described 5th resistance is connected with the first end of described 6th resistance and the first end of described 6th electric capacity respectively, second end ground connection of described 6th electric capacity, second end of described 6th resistance is connected with the collector electrode of described 3rd triode and the first end of described 8th resistance respectively, the emitter of described 3rd triode is connected with the first end of described 13 resistance and the base stage of described 4th triode respectively, the emitter of described 4th triode is connected with the first end of described 14 resistance and the first end of described 8th electric capacity respectively, second end of described 7th resistance is connected with the second end of described 8th resistance and the collector electrode of described 4th triode respectively, the current collection very signal output part of described 4th triode, the negative pole of described power supply respectively with the second end of described 8th electric capacity, described 14 resistance is at the second end, second end of described 13 resistance, second end of described 12 resistance, second end of described 11 resistance, second end of described 7th electric capacity is connected with the second end of described 9th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611414.3U CN204244181U (en) | 2014-10-21 | 2014-10-21 | The amplifying circuit of analog signal of radiofrequency signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611414.3U CN204244181U (en) | 2014-10-21 | 2014-10-21 | The amplifying circuit of analog signal of radiofrequency signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204244181U true CN204244181U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420611414.3U Expired - Fee Related CN204244181U (en) | 2014-10-21 | 2014-10-21 | The amplifying circuit of analog signal of radiofrequency signal |
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| CN (1) | CN204244181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510078A (en) * | 2020-05-13 | 2020-08-07 | 广州慧智微电子有限公司 | Impedance adjusting circuit and method, bias circuit structure and amplifier |
-
2014
- 2014-10-21 CN CN201420611414.3U patent/CN204244181U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510078A (en) * | 2020-05-13 | 2020-08-07 | 广州慧智微电子有限公司 | Impedance adjusting circuit and method, bias circuit structure and amplifier |
| CN111510078B (en) * | 2020-05-13 | 2022-08-23 | 广州慧智微电子股份有限公司 | Impedance adjusting circuit and method, bias circuit structure and amplifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151021 |
|
| EXPY | Termination of patent right or utility model |