CN208063165U - A kind of linear large power microwave switch triode switch protection driving circuit - Google Patents
A kind of linear large power microwave switch triode switch protection driving circuit Download PDFInfo
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- CN208063165U CN208063165U CN201820550349.6U CN201820550349U CN208063165U CN 208063165 U CN208063165 U CN 208063165U CN 201820550349 U CN201820550349 U CN 201820550349U CN 208063165 U CN208063165 U CN 208063165U
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Abstract
The utility model discloses a kind of linear large power microwave switch triode switches to protect driving circuit; it is related to electronic engineering field, sufficiently large backward voltage and driving current can be provided for it when microwave switch is opened, realize self-shield measure; it can bear high-power, have the function of high isolation.The utility model includes：Control signal input, control signal input, pre-driver circuitry, emitter following amplifying circuit and protective circuit of diode.The utility model first passes through pre-driver circuitry and carries out electric current driving and secondary isolation control to control signal; use emitter following amplifying circuit that control signal code is amplified later; meet the driving requirement of linear large power microwave switch to improve the carrying load ability of entire circuit; ensure that output drive signal not will produce excessively high reversed bias voltage and make circuit malfunction by protective circuit of diode; it is high-power so as to bear, realize high isolation and self-shield.And device used is Mount Device, easy for installation, integrated level is high, good reliability.
Description
Technical field
The utility model is related to electronic engineering fields more particularly to a kind of protection of linear large power microwave switch triode switch to drive
Dynamic circuit.
Background technology
With the trend that the development of microwave technology and microwave system minimize, it is integrated with the TR components of transmitter and receiver
Demand it is increasing.The microwave switch that resistance to high-power high isolation is needed in TR components goes switching signal in transmitter and connects
Transmission between receipts machine, and with the progress of miniaturization of equipment, the switch driving circuit needs of microwave switch are reliable convenient and small
Type.
In the prior art, lack compact-sized, the high microwave switch circuit of integrated level, can bear it is high-power, have height
The function of isolation and self-shield.
Invention content
The utility model provides a kind of linear large power microwave switch triode switch protection driving circuit, can be in microwave switch
Sufficiently large backward voltage and driving current being provided for it when opening, realizing self-shield measure, can bear high-power, there is height
The function of isolation.
In order to achieve the above objectives, the utility model adopts the following technical solution：
A kind of linear large power microwave switch triode switch protection driving circuit, including：Control signal input, control signal
Input terminal, pre-driver circuitry, emitter following amplifying circuit and protective circuit of diode.
Pre-driver circuitry includes resistance R1, resistance R2, inductance R3, triode D1, and control signal flows into end and connects resistance
R1, the base stage of resistance R1 connecting triodes D1, the emitter connection -5V direct voltage sources of triode D1, the current collection of triode D1
Pole connects inductance R3, and the other end of inductance R3 connects emitter following amplifying circuit, also parallel connection between the base stage and emitter of triode D1
Resistance R2.Pre-driver circuitry carries out electric current driving to input signal, can guarantee effective control and the secondary isolation of subsequent conditioning circuit,
So that front and back signal will not influence each other.
Emitter following amplifying circuit includes resistance R4, resistance R5, triode D2, and inductance R3 connection resistance R4, resistance R4's is another
Hold the collector of connecting triode D2, the emitter of triode D2 by resistance R5 connection control signal outputs, resistance R4 with
Connection -48V DC voltages between the collector of triode D2, the base stage of connecting triode D2 between inductance R3 and resistance R4.It penetrates
Further amplify control signal with circuit, the carrying load ability of entire circuit is provided, to meet linear large power microwave switch
Driving requires, while reducing and being connected directly caused influence between circuit, works as a buffer.
Protective circuit of diode includes diode D3, the base stage of the positive connecting triode D2 of diode D3, diode D3
Cathode connect control signal output.Protective circuit of diode ensures that output signal not will produce excessively high reversed bias voltage and make electricity
It fails on road.
Further, triode D1 and triode D2 is PNP triode.
Further, the collector emitter voltage of triode D1 and triode D2 are -100V, driving current is up to -
1A。
Further, diode D2 uses high pressure resistant clamp diode.
The utility model has the beneficial effects that：The utility model is using quickly corresponding PNP triode as switch drive
Main devices, transistor collector-transmitter voltage can reach -100V, and the reachable -1A of driving current maximum is opened using triode
The principle for closing protection driving first passes through pre-driver circuitry and controls the progress electric current driving of control signal and secondary isolation, later
Control signal code is amplified using emitter following amplifying circuit, to improve the carrying load ability of entire circuit to meet HIGH-POWERED MICROWAVES
The driving requirement of switch increases a high pressure resistant clamp diode to ensure that output drive signal not will produce in emitter following circuit
High reversed bias voltage makes circuit malfunction, high-power so as to bear, and realizes high isolation and self-shield.
Description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
To make those skilled in the art more fully understand the technical solution of the utility model, With reference to embodiment
The utility model is described in further detail.
The utility model embodiment provides a kind of linear large power microwave switch triode switch protection driving circuit, such as Fig. 1 institutes
Show, including：
A kind of linear large power microwave switch triode switch protection driving circuit, including：Control signal input, control signal
Input terminal, pre-driver circuitry, emitter following amplifying circuit and protective circuit of diode.
Pre-driver circuitry includes resistance R1, resistance R2, inductance R3, triode D1, and control signal flows into end and connects resistance
R1, the base stage of resistance R1 connecting triodes D1, the emitter connection -5V direct voltage sources of triode D1, the current collection of triode D1
Pole connects inductance R3, and the other end of inductance R3 connects emitter following amplifying circuit, also parallel connection between the base stage and emitter of triode D1
Resistance R2.Pre-driver circuitry carries out electric current driving to input signal, can guarantee effective control and the secondary isolation of subsequent conditioning circuit,
So that front and back signal will not influence each other.
Emitter following amplifying circuit includes resistance R4, resistance R5, triode D2, and inductance R3 connection resistance R4, resistance R4's is another
Hold the collector of connecting triode D2, the emitter of triode D2 by resistance R5 connection control signal outputs, resistance R4 with
Connection -48V DC voltages between the collector of triode D2, the base stage of connecting triode D2 between inductance R3 and resistance R4.It penetrates
Further amplify control signal with circuit, the carrying load ability of entire circuit is provided, to meet linear large power microwave switch
Driving requires, while reducing and being connected directly caused influence between circuit, works as a buffer.
Protective circuit of diode includes diode D3, the base stage of the positive connecting triode D2 of diode D3, diode D3
Cathode connect control signal output.Protective circuit of diode ensures that output signal not will produce excessively high reversed bias voltage and make electricity
It fails on road.
Wherein, triode D1 and triode D2 is PNP triode, and diode D2 uses high pressure resistant clamp diode.Three
The collector emitter voltage of pole pipe D1 and triode D2 are -100V, and driving current is up to -1A.R1 resistance values are 2K Ω, R2
Resistance value be 750 Ω, R3 resistance values be 75 Ω, R4 resistance values be 12K Ω, R5 resistance values are 82 Ω.
The utility model has the beneficial effects that：The utility model is using quickly corresponding PNP triode as switch drive
Main devices, transistor collector-transmitter voltage can reach -100V, and the reachable -1A of driving current maximum is opened using triode
The principle for closing protection driving first passes through pre-driver circuitry and controls the progress electric current driving of control signal and secondary isolation, later
Control signal code is amplified using emitter following amplifying circuit, to improve the carrying load ability of entire circuit to meet HIGH-POWERED MICROWAVES
The driving requirement of switch increases a high pressure resistant clamp diode to ensure that output drive signal not will produce in emitter following circuit
High reversed bias voltage makes circuit malfunction, high-power so as to bear, and realizes high isolation and self-shield.And device used is
Mount Device, it is easy for installation, integrated level is high, good reliability.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, the change that can be readily occurred in
Change or replace, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with power
Subject to the protection domain that profit requires.
Claims (4)
1. a kind of linear large power microwave switch triode switch protects driving circuit, which is characterized in that including：Control signal input
End, control signal input, pre-driver circuitry, emitter following amplifying circuit and protective circuit of diode,
Pre-driver circuitry includes resistance R1, resistance R2, inductance R3, triode D1, and control signal flows into end and connects resistance R1, electricity
Hinder the base stage of R1 connecting triodes D1, the emitter connection -5V direct voltage sources of triode D1, the collector connection of triode D1
The other end of inductance R3, inductance R3 connect emitter following amplifying circuit, also parallel resistance R2 between the base stage and emitter of triode D1；
Emitter following amplifying circuit includes resistance R4, resistance R5, triode D2, and the other end of inductance R3 connections resistance R4, resistance R4 connect
The collector of triode D2 is connect, the emitter of triode D2 passes through resistance R5 connection control signal outputs, resistance R4 and three poles
Connection -48V DC voltages between the collector of pipe D2, the base stage of connecting triode D2 between inductance R3 and resistance R4；
Protective circuit of diode includes diode D3, and the base stage of the positive connecting triode D2 of diode D3, diode D3's is negative
Pole connects control signal output.
2. circuit according to claim 1, which is characterized in that the triode D1 and triode D2 is PNP tri-
Pole pipe.
3. circuit according to claim 1, which is characterized in that the collector-of the triode D1 and the triode D2
Emitter voltage is -100V, and driving current is up to -1A.
4. circuit according to claim 1, which is characterized in that the diode D2 uses high pressure resistant clamp diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820550349.6U CN208063165U (en) | 2018-04-17 | 2018-04-17 | A kind of linear large power microwave switch triode switch protection driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820550349.6U CN208063165U (en) | 2018-04-17 | 2018-04-17 | A kind of linear large power microwave switch triode switch protection driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208063165U true CN208063165U (en) | 2018-11-06 |
Family
ID=63982713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820550349.6U Active CN208063165U (en) | 2018-04-17 | 2018-04-17 | A kind of linear large power microwave switch triode switch protection driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208063165U (en) |
-
2018
- 2018-04-17 CN CN201820550349.6U patent/CN208063165U/en active Active
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