CN105024656A - Radio frequency synthesis power amplifier circuit with optional bandwidth - Google Patents
Radio frequency synthesis power amplifier circuit with optional bandwidth Download PDFInfo
- Publication number
- CN105024656A CN105024656A CN201510497639.XA CN201510497639A CN105024656A CN 105024656 A CN105024656 A CN 105024656A CN 201510497639 A CN201510497639 A CN 201510497639A CN 105024656 A CN105024656 A CN 105024656A
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- China
- Prior art keywords
- power amplifier
- stage power
- final stage
- line transformer
- amplifier pipe
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Abstract
The invention discloses a radio frequency synthesis power amplifier circuit with optional bandwidth. The circuit comprises a transmission line transformer TT1, a bandwidth transmission line transformer TT2, a first last-stage power amplifier tube A1, a second last-stage power amplifier tube A2, a first negative feedback circuit NF1 and a second negative feedback circuit NF2. A radio frequency IN input signal is connected with the first last-stage power amplifier tube A1 and the second last-stage power amplifier tube A2 through the transmission line transformer TT1. The first last-stage power amplifier tube A1 is connected with the first negative feedback circuit NF1 in parallel. The second last-stage power amplifier tube A2 is connected with the second negative feedback circuit NF2 in parallel. Signals amplified by the first last-stage power amplifier tube A1 and the second last-stage power amplifier tube A2 are combined through the bandwidth transmission line transformer TT2. The combined signals are output through an output end OUT. The radio frequency IN input signals are output through the transmission line transformer TT1, the last-stage power amplifier tubes connected in parallel and the bandwidth transmission line transformer TT2 to form the radio frequency synthesis power amplifier circuit with the optional bandwidth.
Description
Technical field
The present invention relates to a kind of power amplification circuit, particularly relate to a kind of optional bandwidth radio-frequency synthesis power amplification circuit.
Background technology
Power amplification circuit is a kind of by the amplifying circuit exported for the purpose of relatively high power.Its general Direct driver
load, load capacity is eager to excel.Power amplification circuit, usually used as the output stage of multistage amplifier circuit, in a lot of electronic equipment, requires that the output stage of amplifying circuit can drive certain load, such as, drives instrument, make throw of pointer; Drive loud speaker, make it sounding; Or the actuator etc. in driving automatic control system.Also there is not optional bandwidth radio-frequency synthesis power amplification circuit at present.
Summary of the invention
Based on the technical problem that background technology exists, the present invention proposes a kind of optional bandwidth radio-frequency synthesis power amplification circuit.
The one that the present invention proposes optional bandwidth radio-frequency synthesis power amplification circuit, comprise line transformer TT1, broadband transmission-line transformer TT2, first final stage power amplifier pipe A1, second final stage power amplifier pipe A2, first negative-feedback circuit NF1 and the second negative-feedback circuit NF2, radio frequency IN input signal through line transformer TT1 respectively with the first final stage power amplifier pipe A1, second final stage power amplifier pipe A2 connects, first final stage power amplifier pipe A1 is connected in parallel the first negative-feedback circuit NF1, second final stage power amplifier pipe A2 is connected in parallel the second negative-feedback circuit NF2, through the first final stage power amplifier pipe A1, second final stage power amplifier pipe A2 amplifying signal closes road through broadband transmission-line transformer TT2, after closing road, signal exports through output OUT signal.
Preferably, the first filter RC1, the second filter RC2 are set respectively at the first final stage power amplifier pipe A1, the second final stage power amplifier pipe A2 input.
Preferably, the first filter RC1, the equal ground connection of the second filter RC2.
Preferably, line transformer TT1 is the broadband transmission-line transformer of 2:1, and broadband transmission-line transformer TT2 is 1:1 broadband transmission-line transformer.
The present invention proposes a kind of optional bandwidth radio-frequency synthesis power amplification circuit, radio frequency IN input signal enters the first final stage power amplifier pipe A1 after line transformer TT1, second final stage power amplifier pipe A2, because of the first final stage power amplifier pipe A1, the input and output impedance of the second final stage power amplifier pipe A2 is relative to higher other pipes, but still do not meet impedance matching requirements, Secondary Match is considered during design, at the first final stage power amplifier pipe A1, the input of the second final stage power amplifier pipe A2 increases by the first filter RC1, second filter RC2 can improve its input impedance, reduce coupling Q value and improve the first final stage power amplifier pipe A1, the coefficient of stability of the second final stage power amplifier pipe A2.First negative-feedback circuit NF1 and the second negative-feedback circuit NF2 is respectively the negative-feedback circuit of the first final stage power amplifier pipe A1, the second final stage power amplifier pipe A2, its effect is stable multiplication factor, change input, output-resistor, reduce nonlinear distortion and broadening passband, after the first final stage power amplifier pipe A1, the second final stage power amplifier pipe A2 amplifying signal close road finally by broadband transmission-line transformer TT2, signal exports through OUT signal.Radio frequency IN input signal is exported through line transformer TT1, final stage power amplifier pipe in parallel, broadband transmission-line transformer TT2 the power amplification circuit forming the synthesis of optional bandwidth radio-frequency by the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of optional bandwidth radio-frequency synthesis power amplification circuit that the present invention proposes.
Embodiment
As shown in Figure 1, Fig. 1 is the structural representation of a kind of optional bandwidth radio-frequency synthesis power amplification circuit that the present invention proposes.
With reference to Fig. 1, a kind of optional bandwidth radio-frequency synthesis power amplification circuit, comprise line transformer TT1, broadband transmission-line transformer TT2, first final stage power amplifier pipe A1, second final stage power amplifier pipe A2, first negative-feedback circuit NF1 and the second negative-feedback circuit NF2, radio frequency IN input signal through line transformer TT1 respectively with the first final stage power amplifier pipe A1, second final stage power amplifier pipe A2 connects, first final stage power amplifier pipe A1 is connected in parallel the first negative-feedback circuit NF1, second final stage power amplifier pipe A2 is connected in parallel the second negative-feedback circuit NF2, through the first final stage power amplifier pipe A1, second final stage power amplifier pipe A2 amplifying signal closes road through broadband transmission-line transformer TT2, after closing road, signal exports through output OUT signal.
In the present invention, the first filter RC1, the second filter RC2 are set respectively at the first final stage power amplifier pipe A1, the second final stage power amplifier pipe A2 input, the first filter RC1, the equal ground connection of the second filter RC2.First filter RC1, the second filter RC2 are used for mating amplification first final stage power amplifier pipe A1, the second final stage power amplifier pipe A2, and the value of any bandwidth is calculated by the value of R, C.
In the present invention, line transformer TT1 is broadband transmission-line transformer, makes the first final stage power amplifier pipe A1, the second final stage power amplifier pipe A2 formation Broadband Matching; Band line transformer TT2 is 1:1 broadband transmission-line transformer, and Qi He road acts on.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (4)
1. an optional bandwidth radio-frequency synthesis power amplification circuit, it is characterized in that, comprise line transformer TT1, broadband transmission-line transformer TT2, first final stage power amplifier pipe A1, second final stage power amplifier pipe A2, first negative-feedback circuit NF1 and the second negative-feedback circuit NF2, radio frequency IN input signal through line transformer TT1 respectively with the first final stage power amplifier pipe A1, second final stage power amplifier pipe A2 connects, first final stage power amplifier pipe A1 is connected in parallel the first negative-feedback circuit NF1, second final stage power amplifier pipe A2 is connected in parallel the second negative-feedback circuit NF2, through the first final stage power amplifier pipe A1, second final stage power amplifier pipe A2 amplifying signal closes road through broadband transmission-line transformer TT2, after closing road, signal exports through output OUT signal.
2. one according to claim 1 optional bandwidth radio-frequency synthesis power amplification circuit, is characterized in that, arrange the first filter RC1, the second filter RC2 respectively at the first final stage power amplifier pipe A1, the second final stage power amplifier pipe A2 input.
3. one according to claim 2 optional bandwidth radio-frequency synthesis power amplification circuit, is characterized in that, the first filter RC1, the equal ground connection of the second filter RC2.
4. one according to claim 1 optional bandwidth radio-frequency synthesis power amplification circuit, it is characterized in that, line transformer TT1 is the broadband transmission-line transformer of 2:1, and broadband transmission-line transformer TT2 is 1:1 broadband transmission-line transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497639.XA CN105024656A (en) | 2015-08-14 | 2015-08-14 | Radio frequency synthesis power amplifier circuit with optional bandwidth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497639.XA CN105024656A (en) | 2015-08-14 | 2015-08-14 | Radio frequency synthesis power amplifier circuit with optional bandwidth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105024656A true CN105024656A (en) | 2015-11-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510497639.XA Pending CN105024656A (en) | 2015-08-14 | 2015-08-14 | Radio frequency synthesis power amplifier circuit with optional bandwidth |
Country Status (1)
| Country | Link |
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| CN (1) | CN105024656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116366059A (en) * | 2023-04-10 | 2023-06-30 | 东西分析(永清)仪器有限公司 | Radio frequency power synthesis circuit and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201219249Y (en) * | 2008-07-02 | 2009-04-08 | 郑州华航科技有限公司 | Aviation data chain high-power broad band linear power amplifier |
| CN201360241Y (en) * | 2009-02-27 | 2009-12-09 | 郑州华航科技有限公司 | Aeronautical data link 600W broadband linear power amplifier |
| CN205356276U (en) * | 2016-01-14 | 2016-06-29 | 中兵通信科技有限公司 | Broadband power amplification circuit |
-
2015
- 2015-08-14 CN CN201510497639.XA patent/CN105024656A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201219249Y (en) * | 2008-07-02 | 2009-04-08 | 郑州华航科技有限公司 | Aviation data chain high-power broad band linear power amplifier |
| CN201360241Y (en) * | 2009-02-27 | 2009-12-09 | 郑州华航科技有限公司 | Aeronautical data link 600W broadband linear power amplifier |
| CN205356276U (en) * | 2016-01-14 | 2016-06-29 | 中兵通信科技有限公司 | Broadband power amplification circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116366059A (en) * | 2023-04-10 | 2023-06-30 | 东西分析(永清)仪器有限公司 | Radio frequency power synthesis circuit and method |
| CN116366059B (en) * | 2023-04-10 | 2024-02-06 | 东西分析(永清)仪器有限公司 | Radio frequency power synthesis circuit and method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151104 |
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| RJ01 | Rejection of invention patent application after publication |