CN201733282U - Self-adapting amplifier circuit with variable gain and time varying gain - Google Patents
Self-adapting amplifier circuit with variable gain and time varying gain Download PDFInfo
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- CN201733282U CN201733282U CN2010202615794U CN201020261579U CN201733282U CN 201733282 U CN201733282 U CN 201733282U CN 2010202615794 U CN2010202615794 U CN 2010202615794U CN 201020261579 U CN201020261579 U CN 201020261579U CN 201733282 U CN201733282 U CN 201733282U
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Abstract
The utility model discloses a self-adapting amplifier circuit with variable gain and time varying gain; the self-adapting amplifier circuit includes a low noise amplifier, a NC (numerical control) attenuator, a drive amplifier, a final power amplifier, a coupler, a wave detector, a CPU and an A/D converter; wherein a signal input end is connected with the signal end of the low noise amplifier; the signal input end is also connected with the input end of the coupler; the output end of the signal input end is connected with the input end of the NC attenuator; the output end of the NC attenuator is connected with the input end of the drive amplifier; meanwhile, the control level enable end of the NC attenuator is connected with the output end of the CPU; the output end of the drive amplifier is connected with the input end of the final power amplifier; the output end of the final power amplifier serves as a signal output end; the coupling output end of the coupler is connected with the input end of the wave detector; the output end of the wave detector is connected with the signal end of the A/D converter; and the output end of the A/D converter is connected with the input end of the CPU. The self-adapting amplifier circuit with variable gain and time varying gain has the advantages of simple structure, stable circuit, and high gain adjusting precision.
Description
[technical field]
The utility model relates to a kind of digital gain adaptive circuit, and particularly a kind of automatic gain that is applied to is regulated the adaptive circuit of time-varying gain in power amplification and the special detection radar.
[background technology]
Along with the develop rapidly of the communication technology and The radar exploration technique, no matter be communication system or radar-probing system, all require its transmitter to have Gain Automatic adjusting even have time-varying gain to regulate adaptation function.All the more so for the penetrability detection radar.
[utility model content]
That technical problem to be solved in the utility model is to provide is simple in structure, realize gain-adaptive and the adaptive digital adaptation circuitry of time-varying gain.
The utility model solves the problems of the technologies described above by the following technical programs: the adaptive amplifier circuit of a kind of variable gain and time-varying gain, comprise low noise amplifier, numerical-control attenuator, driving amplifier, final power amplifier, coupler, wave detector, CPU and A/D converter, wherein signal input part links to each other with the signal end of low noise amplifier, signal input part links to each other with the input of coupler simultaneously, the output of low noise amplifier links to each other with the input of numerical-control attenuator, the output of numerical-control attenuator links to each other with the driving amplifier input, numerical-control attenuator control level Enable Pin links to each other with the CPU output simultaneously, the driving amplifier output links to each other with the final power amplifier input, the final power amplifier output is as signal output part, the coupling output of coupler links to each other with the input of wave detector, the output of wave detector links to each other with the signal end of A/D converter, and the output of A/D converter links to each other with the input pin of CPU
The advantage of the utility model variable gain and the adaptive amplifier circuit of time-varying gain is: simple in structure, circuit is stable, gain-adjusted precision height, has guaranteed that communication system and detection radar transmitter gain automatic and adjustable in time become adaptation function.
[description of drawings]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the theory diagram of the utility model variable gain and the adaptive amplifier circuit of time-varying gain.
[embodiment]
For general system transmitter and detection radar transmitter, the joint function modifies tone when satisfying the constant and power of power output, regulate the numerical-control attenuator attenuation according to input power size adjustment numerical-control attenuator and according to surveying needs according to the different periods, thereby realize variable gain self adaptation and the adaptive function of time-varying gain.
See also Fig. 1, be the theory diagram of the utility model variable gain and the adaptive amplifier circuit of time-varying gain, the adaptive amplifier circuit of this variable gain and time-varying gain comprises low noise amplifier 1, numerical-control attenuator 2, driving amplifier 3, final power amplifier 4, coupler 5, wave detector 6, A/D converter 7, CPU 8.The adaptive amplifier circuit of this variable gain and time-varying gain is used for realizing the variable gain self adaptation and the time-varying gain self adaptation of power amplifier module.
Wherein signal input part RFin links to each other with the signal end of low noise amplifier 1, signal input part RFin links to each other with the input of coupler 5 simultaneously, the output of low noise amplifier 1 links to each other with the input of numerical-control attenuator 2, the output of numerical-control attenuator 2 links to each other with driving amplifier 3 inputs, the control level Enable Pin of numerical-control attenuator 2 links to each other with the output of CPU 8 simultaneously, the output of driving amplifier 3 links to each other with final power amplifier 4 inputs, final power amplifier 4 outputs are as signal output part RFout, the coupling output of coupler 5 links to each other with the input of wave detector 6, the output of wave detector 6 links to each other with the signal end of A/D converter 7, and the output of A/D converter 7 links to each other with the input pin of CPU 8.
The operation principle of this variable gain and the adaptive amplifier circuit of time-varying gain is as described below: by coupler 5 input end signal is coupled to wave detector 6 earlier, wave detector 6 detects the input power size of input, the detection signal of wave detector 6 is sent into CPU 8 after A/D converter 7 conversions then, CPU 8 exports control level according to the input power size of input, this control level can realize regulating the attenuation of numerical-control attenuator 2, thereby reaches the function of automatic gain control.For the time-varying gain adaptation function is to export the control level signal by CPU 8 according to the time delays function after the triggered time, this control level signal is the attenuation of may command numerical-control attenuator, thereby realizes the time-varying gain adaptation function of integral module.
Claims (1)
1. variable gain and the adaptive amplifier circuit of time-varying gain, it is characterized in that: comprise low noise amplifier, numerical-control attenuator, driving amplifier, final power amplifier, coupler, wave detector, CPU and A/D converter, wherein signal input part links to each other with the signal end of low noise amplifier, signal input part links to each other with the input of coupler simultaneously, the output of low noise amplifier links to each other with the input of numerical-control attenuator, the output of numerical-control attenuator links to each other with the driving amplifier input, numerical-control attenuator control level Enable Pin links to each other with the CPU output simultaneously, the driving amplifier output links to each other with the final power amplifier input, the final power amplifier output is as signal output part, the coupling output of coupler links to each other with the input of wave detector, the output of wave detector links to each other with the signal end of A/D converter, and the output of A/D converter links to each other with the input pin of CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202615794U CN201733282U (en) | 2010-07-14 | 2010-07-14 | Self-adapting amplifier circuit with variable gain and time varying gain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202615794U CN201733282U (en) | 2010-07-14 | 2010-07-14 | Self-adapting amplifier circuit with variable gain and time varying gain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733282U true CN201733282U (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202615794U Expired - Fee Related CN201733282U (en) | 2010-07-14 | 2010-07-14 | Self-adapting amplifier circuit with variable gain and time varying gain |
Country Status (1)
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| CN (1) | CN201733282U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152230A (en) * | 2011-12-06 | 2013-06-12 | 扬智电子科技(上海)有限公司 | Ethernet physical layer transceiver and gain selection method of Ethernet physical layer transceiver and clock rate selection method of Ethernet physical layer transceiver |
| CN105634428A (en) * | 2015-12-31 | 2016-06-01 | 中国石油天然气集团公司 | Automatic gain control system and control method for AGC (Automatic Gain Control) loop |
| CN106772437A (en) * | 2016-12-12 | 2017-05-31 | 中国科学院合肥物质科学研究院 | The laser radar apparatus of Self Adaptive Control dynamic range |
-
2010
- 2010-07-14 CN CN2010202615794U patent/CN201733282U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152230A (en) * | 2011-12-06 | 2013-06-12 | 扬智电子科技(上海)有限公司 | Ethernet physical layer transceiver and gain selection method of Ethernet physical layer transceiver and clock rate selection method of Ethernet physical layer transceiver |
| CN103152230B (en) * | 2011-12-06 | 2016-04-06 | 扬智电子科技(上海)有限公司 | Ethernet PHY transceiver and gain selection method thereof and clock pulse system of selection |
| CN105634428A (en) * | 2015-12-31 | 2016-06-01 | 中国石油天然气集团公司 | Automatic gain control system and control method for AGC (Automatic Gain Control) loop |
| CN106772437A (en) * | 2016-12-12 | 2017-05-31 | 中国科学院合肥物质科学研究院 | The laser radar apparatus of Self Adaptive Control dynamic range |
| CN106772437B (en) * | 2016-12-12 | 2020-11-27 | 中国科学院合肥物质科学研究院 | Laser radar device capable of adaptively controlling dynamic range |
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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: 20110202 Termination date: 20150714 |
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| EXPY | Termination of patent right or utility model |