CN204290891U - A kind of wideband power amplifer circuit - Google Patents
A kind of wideband power amplifer circuit Download PDFInfo
- Publication number
- CN204290891U CN204290891U CN201420712473.XU CN201420712473U CN204290891U CN 204290891 U CN204290891 U CN 204290891U CN 201420712473 U CN201420712473 U CN 201420712473U CN 204290891 U CN204290891 U CN 204290891U
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- resistance
- electric capacity
- triode
- operational amplifier
- inductance
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Abstract
The utility model discloses a kind of wideband power amplifer circuit, comprise the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the first triode, the second triode, the 3rd triode, the 4th triode, the first inductance, the second inductance and operational amplifier.Power amplifier efficiency of the present utility model is high, effectively reduce the vibration of distributed capacitance feedback and generation, and have that amplification performance is stablized, intermodulation distortion is little, harmonic distortion is little, the feature of working band wide ranges, circuit structure of the present utility model is simple simultaneously, components and parts used are few, reduce cost of manufacture, there is use value widely.
Description
Technical field
The utility model relates to a kind of wideband amplification circuit, particularly relates to a kind of wideband power amplifer circuit.
Background technology
Along with the development of society, the application of wideband power amplifer starts, from military to civilian expansion, to be seized of critical role at present in fields such as radio communication, network data transmission, global position system, optical transmission systems; When designing the port match of traditional narrow power amplifier, generally design according to low noise or conjugate match, low noise amplification or maximum power output is obtained with this, but under the condition in broadband, the change of input and output impedance is larger, now uses the concept of conjugate match to be inappropriate; The wideband power amplifer of current design, most circuit structure is complicated, and power amplifier efficiency is not high enough, also can produce vibration because of the feedback of distributed capacitance in circuit, is unfavorable for the amplification of signal.
Utility model content
The purpose of this utility model is just to provide a kind of wideband power amplifer circuit to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises the first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, first triode, second triode, 3rd triode, 4th triode, first inductance, second inductance and operational amplifier, the first end of described first resistance is the signal input part of described wideband power amplifer circuit, the second end of described first resistance simultaneously with the inverting input of described operational amplifier, the first end of described second resistance, the first end of described first electric capacity, the first end of described 4th resistance is connected with the first end of described 3rd electric capacity, the normal phase input end of described operational amplifier is connected with the first end of described 3rd resistance, second end ground connection of described 3rd resistance, the frequency compensation end of described operational amplifier is connected with the first end of described second electric capacity, second end of described second electric capacity is connected with the second end of described second resistance, the cathode voltage input of described operational amplifier is connected with the first end of described 4th electric capacity and the first end of described 5th resistance simultaneously, the cathode voltage input of described operational amplifier is connected with the first end of described 5th electric capacity and the first end of described 7th resistance simultaneously, the output of described operational amplifier is connected with the second end of described first electric capacity and the first end of described 6th resistance simultaneously, second end of described 4th electric capacity is connected and ground connection with the second end of described 5th electric capacity, second end of described 6th resistance is connected with the base stage of described first triode and the base stage of described second triode simultaneously, the emitter of described first triode is connected with the first end of described 8th resistance and the base stage of described 3rd triode simultaneously, the emitter of described second triode is connected with the first end of described 9th resistance and the base stage of described 4th triode simultaneously, the collector electrode of described second triode simultaneously with the second end of described 5th resistance, second end of described 8th resistance, the first end of described first inductance is connected with positive source, the collector electrode of described first triode simultaneously with the second end of described 7th resistance, second end of described 9th resistance, the first end of described second inductance is connected with described power cathode, second end of described second inductance is connected with the collector electrode of described 4th triode and the first end of described 7th electric capacity simultaneously, second end of described 7th electric capacity is connected and ground connection with the first end of described 6th electric capacity, the emitter of described 4th triode is connected with the emitter of described 3rd triode and the first end of described tenth resistance simultaneously, the collector electrode of described 3rd triode is connected with the second end of described first inductance and the second end of described 6th electric capacity simultaneously, with the second end of described 4th resistance while of the second end of described tenth resistance, second end of described 3rd electric capacity is connected with the signal output part of described wideband power amplifer circuit.
Particularly, described operational amplifier is model LM318 high speed integrated operational amplifier.
The beneficial effects of the utility model are:
Power amplifier efficiency of the present utility model is high, effectively reduce the vibration of distributed capacitance feedback and generation, and have that amplification performance is stablized, intermodulation distortion is little, harmonic distortion is little, the feature of working band wide ranges, circuit structure of the present utility model is simple simultaneously, components and parts used are few, reduce cost of manufacture, there is use value widely.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model comprises the first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 8th resistance R8, 9th resistance R9, tenth resistance R10, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, 4th electric capacity C4, 5th electric capacity C5, 6th electric capacity C6, 7th electric capacity C7, first triode VT1, second triode VT2, 3rd triode VT3, 4th triode VT4, first inductance L 1, second inductance L 2 and operational amplifier A, the first end of the first resistance R1 is the signal input part IN of wideband power amplifer circuit, second end of the first resistance R1 simultaneously with the inverting input of operational amplifier A, the first end of the second resistance R2, the first end of the first electric capacity C1, the first end of the 4th resistance R4 is connected with the first end of the 3rd electric capacity C3, the normal phase input end of operational amplifier A is connected with the first end of the 3rd resistance R3, the second end ground connection of the 3rd resistance R3, the frequency compensation end of operational amplifier A is connected with the first end of the second electric capacity C2, second end of the second electric capacity C2 is connected with second end of the second resistance R2, the cathode voltage input of operational amplifier A is connected with the first end of the 4th electric capacity C4 and the first end of the 5th resistance R5 simultaneously, the cathode voltage input of operational amplifier A is connected with the first end of the 5th electric capacity C5 and the first end of the 7th resistance R7 simultaneously, the output of operational amplifier A is connected with second end of the first electric capacity C1 and the first end of the 6th resistance R6 simultaneously, second end of the 4th electric capacity C4 is connected and ground connection with second end of the 5th electric capacity C5, second end of the 6th resistance R6 is connected with the base stage of the first triode VT1 and the base stage of the second triode VT2 simultaneously, the emitter of the first triode VT1 is connected with the first end of the 8th resistance R8 and the base stage of the 3rd triode VT3 simultaneously, the emitter of the second triode VT2 is connected with the first end of the 9th resistance R9 and the base stage of the 4th triode VT4 simultaneously, the collector electrode of the second triode VT2 simultaneously with second end of the 5th resistance R5, second end of the 8th resistance R8, the first end of the first inductance L 1 is connected with positive source, the collector electrode of the first triode VT1 simultaneously with second end of the 7th resistance R7, second end of the 9th resistance R9, the first end of the second inductance L 2 is connected with power cathode, second end of the second inductance L 2 is connected with the collector electrode of the 4th triode VT4 and the first end of the 7th electric capacity C7 simultaneously, second end of the 7th electric capacity C7 is connected and ground connection with the first end of the 6th electric capacity C6, the emitter of the 4th triode VT4 is connected with the emitter of the 3rd triode VT3 and the first end of the tenth resistance R10 simultaneously, the collector electrode of the 3rd triode VT3 is connected with the second end of the first inductance L 1 and second end of the 6th electric capacity C6 simultaneously, with second end of the 4th resistance R4 while of second end of the tenth resistance R10, second end of the 3rd electric capacity C3 is connected with the signal output part OT of wideband power amplifer circuit, operational amplifier A is model LM318 high speed integrated operational amplifier.In the utility model, signal enters to hold IN to input through the first resistance R1 feeding operational amplifier A from signal, after operational amplifier A is amplified, send into the first triode VT1 to the 4th triode VT4 again do two-stage complementation amplification, finally exported by signal output part OT, wherein the 3rd electric capacity C3 and the 4th resistance R4 forms negative-feedback circuit.
Claims (2)
1. a wideband power amplifer circuit, is characterized in that: comprise the first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, first triode, second triode, 3rd triode, 4th triode, first inductance, second inductance and operational amplifier, the first end of described first resistance is the signal input part of described wideband power amplifer circuit, the second end of described first resistance simultaneously with the inverting input of described operational amplifier, the first end of described second resistance, the first end of described first electric capacity, the first end of described 4th resistance is connected with the first end of described 3rd electric capacity, the normal phase input end of described operational amplifier is connected with the first end of described 3rd resistance, second end ground connection of described 3rd resistance, the frequency compensation end of described operational amplifier is connected with the first end of described second electric capacity, second end of described second electric capacity is connected with the second end of described second resistance, the cathode voltage input of described operational amplifier is connected with the first end of described 4th electric capacity and the first end of described 5th resistance simultaneously, the cathode voltage input of described operational amplifier is connected with the first end of described 5th electric capacity and the first end of described 7th resistance simultaneously, the output of described operational amplifier is connected with the second end of described first electric capacity and the first end of described 6th resistance simultaneously, second end of described 4th electric capacity is connected and ground connection with the second end of described 5th electric capacity, second end of described 6th resistance is connected with the base stage of described first triode and the base stage of described second triode simultaneously, the emitter of described first triode is connected with the first end of described 8th resistance and the base stage of described 3rd triode simultaneously, the emitter of described second triode is connected with the first end of described 9th resistance and the base stage of described 4th triode simultaneously, the collector electrode of described second triode simultaneously with the second end of described 5th resistance, second end of described 8th resistance, the first end of described first inductance is connected with positive source, the collector electrode of described first triode simultaneously with the second end of described 7th resistance, second end of described 9th resistance, the first end of described second inductance is connected with described power cathode, second end of described second inductance is connected with the collector electrode of described 4th triode and the first end of described 7th electric capacity simultaneously, second end of described 7th electric capacity is connected and ground connection with the first end of described 6th electric capacity, the emitter of described 4th triode is connected with the emitter of described 3rd triode and the first end of described tenth resistance simultaneously, the collector electrode of described 3rd triode is connected with the second end of described first inductance and the second end of described 6th electric capacity simultaneously, with the second end of described 4th resistance while of the second end of described tenth resistance, second end of described 3rd electric capacity is connected with the signal output part of described wideband power amplifer circuit.
2. a kind of wideband power amplifer circuit according to claim 1, is characterized in that: described operational amplifier is model LM318 high speed integrated operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420712473.XU CN204290891U (en) | 2014-11-24 | 2014-11-24 | A kind of wideband power amplifer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420712473.XU CN204290891U (en) | 2014-11-24 | 2014-11-24 | A kind of wideband power amplifer circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204290891U true CN204290891U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420712473.XU Expired - Fee Related CN204290891U (en) | 2014-11-24 | 2014-11-24 | A kind of wideband power amplifer circuit |
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| CN (1) | CN204290891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362991A (en) * | 2014-11-24 | 2015-02-18 | 成都联宇创新科技有限公司 | Broadband power amplifier circuit |
-
2014
- 2014-11-24 CN CN201420712473.XU patent/CN204290891U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362991A (en) * | 2014-11-24 | 2015-02-18 | 成都联宇创新科技有限公司 | Broadband power amplifier circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151124 |