CN108111181A - A kind of receiver automatic gain control circuit - Google Patents
A kind of receiver automatic gain control circuit Download PDFInfo
- Publication number
- CN108111181A CN108111181A CN201611044411.6A CN201611044411A CN108111181A CN 108111181 A CN108111181 A CN 108111181A CN 201611044411 A CN201611044411 A CN 201611044411A CN 108111181 A CN108111181 A CN 108111181A
- Authority
- CN
- China
- Prior art keywords
- attenuator
- gain control
- output terminal
- automatic gain
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
- H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
The present invention discloses a kind of receiver automatic gain control circuit, including：Power splitter A（1）, detector amplefier B（2）, voltage-regulating circuit C（3）With attenuator D（4）, wherein power splitter（1）Output terminal respectively with detector amplefier（2）And attenuator（4）Connection, detector amplefier（2）Output terminal and voltage-regulating circuit（3）Connection, voltage-regulating circuit（3）Output terminal and attenuator（4）Connection.Circuit of the present invention realizes speed automatic gain control by designing new open loop circuit control circuit pattern.Compared with usual closed loop control mode needs plural process control that could realize gain control, quick control is realized.
Description
Technical field
The present invention relates to a kind of gain control circuits, particularly a kind of receiver automatic gain control circuit.
Background technology
Radar receiver system mainly plays a part of to amplify small-signal, and gain is usually made high.It is put inside it by many
Big device composition, the dynamic range of signals that usual receiver receives is very big, and existing small-signal also has the very high strong letter of input power
Number.While ensureing that receiver can be to low level signal amplification, when also ensureing big signal input, receiver also can normal work
Make.If not carrying out dynamic gain control to receiver, receiver can export signal serious distortion, even when big signal inputs
Receiver internal amplifier is caused to burn.
Have a kind of gain control circuit at present, it by operational amplifier, power splitter, electrically controlled attenuator and geophone group into.
Input signal concatenation operation amplifier positive input, operational amplifier output terminal are connected with electrically controlled attenuator control terminal.When defeated
Enter signal to amplifier it is very big when, the output signal of amplifier increases therewith.Being input to electricity adjusts the signal at adjustable attenuation end also to increase.
Electrically controlled attenuator attenuation increases, and receiver net gain is reduced.Since control structure belongs to closed-loop control, it is therefore necessary to through excessive
Secondary process control could realize gain control.This gain control circuit cannot meet burst pulse modulated signal and input this reception
Pattern.
The content of the invention
It is an object of the present invention to provide a kind of receiver automatic gain control circuits, and solving existing gain control circuit cannot expire
The problem of sufficient burst pulse modulated signal input reception pattern.
A kind of receiver automatic gain control circuit, including：Power splitter, detector amplefier, voltage-regulating circuit and attenuation
Device.
The input terminal of the power splitter is the input terminal of entire automatic gain control circuit, the output terminal of power splitter respectively with
Detector amplefier is connected with attenuator, and the output terminal of detector amplefier is connected with voltage-regulating circuit, voltage-regulating circuit it is defeated
Outlet is connected with attenuator, and the output terminal of attenuator is the output terminal of entire automatic gain control circuit.
When receiver automatic gain control circuit works, receiver receives signal and is divided into two-way and defeated by power splitter work(
Go out, signal enters attenuator all the way, and attenuator according to the control voltage from power splitter is decayed and exported to connecing accordingly
Receipts machine receiving channel；In addition signal believes the control by generating control signal, voltage-regulating circuit after detector amplefier all the way
It number is adjusted, output is to attenuator after the control signal that generation matches with attenuator.
The present invention realizes speed automatic gain control by designing new open loop circuit control circuit pattern.With usually closing
Ring control model needs plural process control that could realize that gain control is compared, and realizes quick control.
Description of the drawings
A kind of structure charts of receiver automatic gain control circuit of Fig. 1.
1. 2. detector amplefier of power splitter, 3. voltage-regulating circuit, 4. attenuator.
Specific embodiment
A kind of receiver automatic gain control circuit, including：It power splitter 1, detector amplefier 2, voltage-regulating circuit 3 and declines
Subtract device 4.
The input terminal of the power splitter 1 is the input terminal of entire automatic gain control circuit, and the output terminal of power splitter 1 is distinguished
It is connected with detector amplefier 2 and attenuator 4, the output terminal of detector amplefier 2 is connected with voltage-regulating circuit 3, voltage adjustment electricity
The output terminal on road 3 is connected with attenuator 4, and the output terminal of attenuator 4 is the output terminal of entire automatic gain control circuit.
When receiver automatic gain control circuit works, receiver receives signal and is divided into two-way simultaneously by 1 work(of power splitter
Output, signal enters attenuator 4 all the way, and attenuator 4 is decayed and exported accordingly according to the control voltage from power splitter 1
To receiver receiving channel；In addition signal is by generating control signal all the way after detector amplefier 2, and voltage-regulating circuit 3 is to this
Control signal is adjusted, and is exported after the control signal that generation matches with attenuator 4 to attenuator 4.
Claims (1)
1. a kind of receiver automatic gain control circuit, it is characterised in that including：Power splitter（1）, detector amplefier（2）, voltage
Adjustment circuit（3）And attenuator（4）；
The power splitter（1）Input terminal be entire automatic gain control circuit input terminal, power splitter（1）Output terminal difference
With detector amplefier（2）And attenuator（4）Connection, detector amplefier（2）Output terminal and voltage-regulating circuit（3）Connection, electricity
Press adjustment circuit（3）Output terminal and attenuator（4）Connection, attenuator（4）Output terminal be entire automatic gain control circuit
Output terminal；
When receiver automatic gain control circuit works, receiver receives signal and passes through power splitter（1）Work(is divided into two-way and defeated
Go out, signal enters attenuator all the way（4）, attenuator（4）According to from power splitter（1）Control voltage carry out corresponding attenuation simultaneously
It exports to receiver receiving channel；In addition signal passes through detector amplefier all the way（2）After generate control signal, voltage-regulating circuit
（3）The control signal is adjusted, generation and attenuator（4）It is exported after the control signal to match to attenuator（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611044411.6A CN108111181A (en) | 2016-11-24 | 2016-11-24 | A kind of receiver automatic gain control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611044411.6A CN108111181A (en) | 2016-11-24 | 2016-11-24 | A kind of receiver automatic gain control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108111181A true CN108111181A (en) | 2018-06-01 |
Family
ID=62204865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611044411.6A Pending CN108111181A (en) | 2016-11-24 | 2016-11-24 | A kind of receiver automatic gain control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108111181A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518925A (en) * | 2019-08-29 | 2019-11-29 | 成都锦江电子系统工程有限公司 | A kind of high dynamic response signal receiving channel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202077057U (en) * | 2011-05-11 | 2011-12-14 | 中国人民解放军电子工程学院 | High-precision recovery device for single side-band carriers |
| CN202841099U (en) * | 2012-09-25 | 2013-03-27 | 清华大学 | Control device for microwave system |
| CN104242970A (en) * | 2014-08-29 | 2014-12-24 | 苏州芸芮懿电子科技有限公司 | Automatic gain reduction control circuit for multi-channel intermediate-frequency pulses |
| CN106160762A (en) * | 2016-06-28 | 2016-11-23 | 中国科学院微电子研究所 | Automatic gain control system and method for broadband receiver and broadband receiver |
-
2016
- 2016-11-24 CN CN201611044411.6A patent/CN108111181A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202077057U (en) * | 2011-05-11 | 2011-12-14 | 中国人民解放军电子工程学院 | High-precision recovery device for single side-band carriers |
| CN202841099U (en) * | 2012-09-25 | 2013-03-27 | 清华大学 | Control device for microwave system |
| CN104242970A (en) * | 2014-08-29 | 2014-12-24 | 苏州芸芮懿电子科技有限公司 | Automatic gain reduction control circuit for multi-channel intermediate-frequency pulses |
| CN106160762A (en) * | 2016-06-28 | 2016-11-23 | 中国科学院微电子研究所 | Automatic gain control system and method for broadband receiver and broadband receiver |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518925A (en) * | 2019-08-29 | 2019-11-29 | 成都锦江电子系统工程有限公司 | A kind of high dynamic response signal receiving channel |
| CN110518925B (en) * | 2019-08-29 | 2024-04-09 | 成都锦江电子系统工程有限公司 | High dynamic response signal receiving channel |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180601 |