CN204119218U - A kind of for receiver power limiter protection circuit - Google Patents
A kind of for receiver power limiter protection circuit Download PDFInfo
- Publication number
- CN204119218U CN204119218U CN201420517243.8U CN201420517243U CN204119218U CN 204119218 U CN204119218 U CN 204119218U CN 201420517243 U CN201420517243 U CN 201420517243U CN 204119218 U CN204119218 U CN 204119218U
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Abstract
The utility model relates to a kind of for receiver power limiter protection circuit.This circuit comprises detection chip and PIN pipe, detection chip adopts AD8310 chip, circuit is used for realizing high-power signal amplitude limit function, Received signal strength inputs from electric capacity C1 left end, electric capacity C3 right-hand member exports, electric capacity C2 is capacitance, electric capacity C4 is connected to signal primary link as coupling capacitance, coupling coefficient is changed by regulating resistance R1 resistance value size, namely the signal power size of detection chip is entered, realize the power detection to input signal, by regulating resistance R3, the size of resistance R4 resistance value, thus change the direct voltage size be added on detection chip, change the amplitude limit thresholding to input large-signal power.Circuit accounts for the space of a whole page and amasss little, and cost is low, and difficulty is low, and consider from application point, under midget receiver or the less demanding situation of receiver, flexible Application, can realize the combination of high-power signal amplitude limit and small signal power amplitude limit effectively.
Description
Technical field
The utility model relates to receiver, and particularly one is used for receiver power limiter protection circuit.
Background technology
Over-excitation protection circuit is part main in receiver system, is mainly used in the front end of receiver.Along with the development of Modern wireless communication, there is various radio signal in the extensive use of frequency spectrum resource in space, to receiver System's composition interference signal.Due to the high sensitivity characteristic of receiver itself, if front end receiver increases protective circuit, then space interference signal may burn receiver.
Current, large-scale receiver system all adopts special power limited amplitude protection module, to improve burn-out resistance and to meet the requirement of high linearity.Under midget receiver or the less demanding situation of receiver, simple circuit.Special power limited amplitude protection module also can be used in midget receiver or the less demanding situation of receiver, and just Cost Problems is too high.
Summary of the invention
The purpose of this utility model is to provide a kind of for receiver power limiter protection circuit over-excitation protection circuit, and this circuit design is intended to solution and conveniently realizes over-excitation protection function, conveniently determines power protection thresholding.
The technical scheme that the utility model is taked is: a kind of for receiver power limiter protection circuit, it is characterized in that: this circuit comprises detection chip D12, PIN pipe D1 and PIN pipe D2, detection chip D12 adopts AD8310 chip, circuit receives signals connects one end of PIN pipe D1 by electric capacity C1, one end of inductance L 1, one end of electric capacity C4 and one end of electric capacity C2, the other end ground connection of PIN pipe D1, the other end ground connection of inductance L 1, the other end of electric capacity C4 is connected with 8 pin of AD8310 chip with electric capacity C5 by resistance R1, the other end of electric capacity C2 connects one end of PIN pipe D2, one end of resistance R4 and one end of electric capacity C3, the other end ground connection of PIN pipe D2, the other end of electric capacity C3 is for sending signal output part, the other end of resistance R4 connects 4 pin of AD8310 chip and one end of resistance R3, the other end ground connection of resistance R3, 5 pin of AD8310 chip and one end of 7 pin contact resistance R2 and one end of electric capacity C8, the other end of resistance R2 connects one end of electric capacity C7, meet power supply VCC simultaneously, the other end of electric capacity C7, one end of electric capacity C8 and the equal ground connection of 2 pin of AD8310 chip, 1 pin of AD8310 chip is by electric capacity C6 ground connection.
The beneficial effects of the utility model and feature: circuit accounts for the space of a whole page and amasss little, and cost is low, and difficulty is low, consider from application point, under midget receiver or the less demanding situation of receiver, flexible Application, can realize the combination of high-power signal amplitude limit and small signal power amplitude limit effectively.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram of the design.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to Fig. 1, this circuit is used for realizing high-power signal amplitude limit function, Received signal strength inputs from electric capacity C1 left end, electric capacity C3 right-hand member exports, electric capacity C2 is capacitance, electric capacity C4 is connected to signal primary link as coupling capacitance, coupling coefficient is changed by regulating resistance R1 resistance value size, namely the signal power size of detection chip D12 is entered, realize the power detection to input signal, by the size of regulating resistance R3, resistance R4 resistance value, thus change the direct voltage size be added on detection chip D2, change the amplitude limit thresholding to input large-signal power.
Claims (1)
1. one kind for receiver power limiter protection circuit, it is characterized in that: this circuit comprises detection chip D12, PIN pipe D1 and PIN pipe D2, detection chip D12 adopts AD8310 chip, circuit receives signals connects one end of PIN pipe D1 by electric capacity C1, one end of inductance L 1, one end of electric capacity C4 and one end of electric capacity C2, the other end ground connection of PIN pipe D1, the other end ground connection of inductance L 1, the other end of electric capacity C4 is connected with 8 pin of AD8310 chip with electric capacity C5 by resistance R1, the other end of electric capacity C2 connects one end of PIN pipe D2, one end of resistance R4 and one end of electric capacity C3, the other end ground connection of PIN pipe D2, the other end of electric capacity C3 is for sending signal output part, the other end of resistance R4 connects 4 pin of AD8310 chip and one end of resistance R3, the other end ground connection of resistance R3, 5 pin of AD8310 chip and one end of 7 pin contact resistance R2 and one end of electric capacity C8, the other end of resistance R2 connects one end of electric capacity C7, meet power supply VCC simultaneously, the other end of electric capacity C7, one end of electric capacity C8 and the equal ground connection of 2 pin of AD8310 chip, 1 pin of AD8310 chip is by electric capacity C6 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517243.8U CN204119218U (en) | 2014-09-10 | 2014-09-10 | A kind of for receiver power limiter protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517243.8U CN204119218U (en) | 2014-09-10 | 2014-09-10 | A kind of for receiver power limiter protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204119218U true CN204119218U (en) | 2015-01-21 |
Family
ID=52336493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420517243.8U Expired - Fee Related CN204119218U (en) | 2014-09-10 | 2014-09-10 | A kind of for receiver power limiter protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204119218U (en) |
-
2014
- 2014-09-10 CN CN201420517243.8U patent/CN204119218U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20180910 |