CN204578486U - A kind of radio frequency power amplifier system - Google Patents
A kind of radio frequency power amplifier system Download PDFInfo
- Publication number
- CN204578486U CN204578486U CN201520354739.2U CN201520354739U CN204578486U CN 204578486 U CN204578486 U CN 204578486U CN 201520354739 U CN201520354739 U CN 201520354739U CN 204578486 U CN204578486 U CN 204578486U
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- power amplifier
- driving stage
- circuit
- frequency power
- radio
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Abstract
The utility model relates to electronic circuit technology field, solve radio-frequency power amplifier in prior art and there is the technical problem can not taking into account gain and stability, by providing a kind of radio frequency power amplifier system, comprising: biasing circuit, driving stage power amplifier and final power amplifier, by input matching circuit cascade between biasing circuit and driving stage power amplifier, by orthocoupler cascade between described final power amplifier and described driving stage power amplifier, described input matching circuit comprises inductance and electric capacity, described inductance and electric capacity composition parallel resonance, be connected between the output of biasing circuit and the amplifying circuit base stage of driving stage power amplifier, the amplifying circuit grounded emitter of described driving stage power amplifier, collector electrode connects supply voltage, and then by adopting the input matching circuit with resonance, achieve stability and the gain flatness of radio-frequency power amplifier, improve the performance of radio-frequency power amplifier.
Description
Technical field
The utility model relates to electronic circuit technology field, particularly relates to a kind of radio frequency power amplifier system.
Background technology
Along with the development of science and technology, radio-frequency power amplifier comprises dual-stage amplifier device and input matching circuit and intervalve matching circuit, input matching circuit makes source areflexia for the coupling realizing signal source and input, maximum power delivery is had between the amplifier of guarantee signal source, but existing input matching circuit often exchanges stability for sacrifice gain and power output for cost.
Therefore, there is the technical problem can not taking into account gain and stability in radio-frequency power amplifier of the prior art.
Utility model content
The utility model is by providing a kind of radio frequency power amplifier system, solve radio-frequency power amplifier in prior art and there is the technical problem can not taking into account gain and stability, and then by adopting the match circuit with resonance, achieve stability and the gain flatness of radio-frequency power amplifier, improve the performance of radio-frequency power amplifier.
The technical scheme of the utility model embodiment is specially:
A kind of radio frequency power amplifier system, comprising: biasing circuit, driving stage power amplifier and final power amplifier;
By input matching circuit cascade between biasing circuit and driving stage power amplifier, by orthocoupler cascade between described final power amplifier and described driving stage power amplifier, described input matching circuit comprises inductance and electric capacity, described inductance and electric capacity composition parallel resonance, be connected between the output of biasing circuit and the amplifying circuit base stage of driving stage power amplifier, the amplifying circuit grounded emitter of described driving stage power amplifier, collector electrode connects supply voltage.
Further, between input matching circuit and driving stage power amplifier, attenuator cascade is adopted.
The one or more technical schemes provided in the utility model embodiment, at least have following technique effect or advantage:
Owing to adopting biasing circuit in radio frequency power amplifier system, driving stage power amplifier and final power amplifier, by input matching circuit cascade between biasing circuit and driving stage power amplifier, by orthocoupler cascade between final power amplifier and driving stage power amplifier, this input matching circuit comprises inductance and electric capacity, inductance and electric capacity composition parallel resonance, be connected between the output of biasing circuit and the amplifying circuit base stage of driving stage power amplifier, the amplifying circuit emitting stage ground connection of driving stage power amplifier, collector electrode connects supply voltage, solve radio-frequency power amplifier in prior art and there is the technical problem can not taking into account gain and stability, and then by adopting the input matching circuit with resonance, achieve stability and the gain flatness of radio-frequency power amplifier, improve the performance of radio-frequency power amplifier.
Accompanying drawing explanation
Fig. 1 is the structural representation of radio frequency power amplifier system in the utility model embodiment.
Embodiment
The utility model is by providing a kind of radio frequency power amplifier system, solve radio-frequency power amplifier in prior art and there is the technical problem can not taking into account gain and stability, and then by adopting the input matching circuit with resonance, achieve stability and the gain flatness of radio-frequency power amplifier, improve the performance of radio-frequency power amplifier.
There is to solve radio-frequency power amplifier in above-mentioned prior art the technical problem can not taking into account gain and stability, below in conjunction with Figure of description and concrete execution mode, technique scheme being described in detail.
The utility model provides a kind of radio frequency power amplifier system, as shown in Figure 1, comprising: biasing circuit 101, driving stage power amplifier 102 and final power amplifier 103;
By input matching circuit cascade between biasing circuit 101 and driving stage power amplifier 102, by orthocoupler 105 cascade between described final power amplifier 103 and described driving stage power amplifier 102, described input matching circuit comprises inductance 1041 and electric capacity 1042, described inductance 1041 and electric capacity 1042 form parallel resonance, are connected between the output of biasing circuit 101 and the amplifying circuit base stage of driving stage power amplifier 102.Concrete, this input matching circuit can impedance between matching element to avoid radiofrequency signal power loss in transmitting procedure.The parallel resonance that this input matching circuit is made up of inductance 1041 and electric capacity 1042, resonance, in the center of working band, is shunted through biasing circuit to stop radio-frequency input signals.
Between input matching circuit and driving stage power amplifier 102, adopt attenuator cascade 106, by software control attenuator 106, this attenuator can analog digital attenuator, within the specific limits, regulates the gain of power amplifying system.
By adopting above-mentioned technical scheme, effectively can overcome existing radio-frequency power amplifier and there is the technical problem can not taking into account gain and stability, achieving stability and the gain flatness of radio-frequency power amplifier, improve the performance of radio-frequency power amplifier.
Although described preferred embodiment of the present utility model, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (2)
1. a radio frequency power amplifier system, is characterized in that, comprising: biasing circuit, driving stage power amplifier and final power amplifier;
By input matching circuit cascade between biasing circuit and driving stage power amplifier, by orthocoupler cascade between described final power amplifier and described driving stage power amplifier, described input matching circuit comprises inductance and electric capacity, described inductance and electric capacity composition parallel resonance, be connected between the output of biasing circuit and the amplifying circuit base stage of driving stage power amplifier, the amplifying circuit grounded emitter of described driving stage power amplifier, collector electrode connects supply voltage.
2. radio frequency power amplifier system according to claim 1, is characterized in that, adopts attenuator cascade between input matching circuit and driving stage power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354739.2U CN204578486U (en) | 2015-05-28 | 2015-05-28 | A kind of radio frequency power amplifier system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520354739.2U CN204578486U (en) | 2015-05-28 | 2015-05-28 | A kind of radio frequency power amplifier system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204578486U true CN204578486U (en) | 2015-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520354739.2U Expired - Fee Related CN204578486U (en) | 2015-05-28 | 2015-05-28 | A kind of radio frequency power amplifier system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204578486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428550A (en) * | 2017-09-04 | 2019-03-05 | 北京泰龙电子技术有限公司 | A kind of radio-frequency power amplifier input matching circuit |
-
2015
- 2015-05-28 CN CN201520354739.2U patent/CN204578486U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428550A (en) * | 2017-09-04 | 2019-03-05 | 北京泰龙电子技术有限公司 | A kind of radio-frequency power amplifier input matching circuit |
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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: 20150819 Termination date: 20190528 |