CN202772845U - Integrated symmetric type radio frequency power amplifier - Google Patents
Integrated symmetric type radio frequency power amplifier Download PDFInfo
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- CN202772845U CN202772845U CN 201220458870 CN201220458870U CN202772845U CN 202772845 U CN202772845 U CN 202772845U CN 201220458870 CN201220458870 CN 201220458870 CN 201220458870 U CN201220458870 U CN 201220458870U CN 202772845 U CN202772845 U CN 202772845U
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- power amplifier
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- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000010295 mobile communication Methods 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
本实用新型公开了一种集成对称型射频功率放大器，它包括耦合器、载波放大器和峰值放大器，50欧姆匹配电阻与耦合器连接，耦合器输出端一通过微带传输线一与载波放大器输入端连接，耦合器输出端二通过微带传输线二与峰值放大器输入端连接，载波放大器输出端连接四分之一波长线，峰值放大器输出端连接匹配阻抗微带线，四分之一波长线和匹配阻抗微带线末端连接；解决了射频功率放大器工作于全功率段使其效率高，但存在调制信号的包络具有一定的失真度问题。
The utility model discloses an integrated symmetrical radio frequency power amplifier, which comprises a coupler, a carrier amplifier and a peak amplifier, a 50-ohm matching resistor is connected to the coupler, and the output end of the coupler is connected to the input end of the carrier amplifier through a microstrip transmission line. , the output end of the coupler is connected to the input end of the peaking amplifier through the second microstrip transmission line, the output end of the carrier amplifier is connected to a quarter-wavelength line, and the output end of the peaking amplifier is connected to a matched impedance microstrip line, a quarter-wavelength line and a matching impedance The end of the microstrip line is connected; it solves the problem that the radio frequency power amplifier works in the full power section to make it efficient, but there is a certain degree of distortion in the envelope of the modulated signal.
Description
Technical field
The utility model belongs to wireless communication technology field, relates in particular to a kind of integrated symmetric form radio-frequency power amplifier.
Background technology
Development along with mobile communication system, in recent years the 3-G (Generation Three mobile communication system) that occurs is wherein with WCDMA, TD-SCDMA, CDMA2000 is representative, and the 4th Generation Mobile Communication System (LTE) base station power amplifier all proposed back-off put high efficiency requirement, high efficiency power amplifier is for the mobile communication system designer, can reduce the complexity of its equipment thermal design, for mobile communication carrier, high efficiency power amplifier can be saved cost of equipment maintenance greatly, and the electricity cost of equipment, one of them key problem of radio-frequency power amplifier systematic research is exactly efficient, particularly the efficient in a large Power Dynamic Range keeps, for the possess skills problem of contradiction of the Designing power amplifier of rf modulated signal, make its efficient high if radio-frequency power amplifier works in the total power section, but exist the envelope of modulation signal to have certain distortion factor problem.
Summary of the invention
The technical problems to be solved in the utility model: a kind of integrated symmetric form radio-frequency power amplifier is provided, works in the total power section with the solution radio-frequency power amplifier and make its efficient high, but exist the envelope of modulation signal to have certain distortion factor problem.
Technical solutions of the utility model:
A kind of integrated symmetric form radio-frequency power amplifier, it comprises coupler, carrier amplifier and peak amplifier, 50 ohm of build-out resistors are connected with coupler, coupler output one is connected with the carrier amplifier input by microstrip transmission line one, coupler output two is connected with the peak amplifier input by microstrip transmission line two, the carrier amplifier output connects quatrter-wavelength line, peak amplifier output matching connection impedance microstrip line, quatrter-wavelength line and the connection of being connected of matched impedance microstrip line.
Coupler is three-dB coupler.
The utility model beneficial effect:
During the utility model work, input signal enters the three-dB coupler that is connected with 50 ohm of build-out resistors, three-dB coupler output two paths of signals, the power of every road signal is 50% of input signal power, namely every road output signal power is than the low 3dBm of input signal power, one road three-dB coupler output signal is carried out signal through microstrip transmission line one incoming carrier amplifier and is amplified, and carries out the characteristic conversion through quatrter-wavelength line afterwards; Another road three-dB coupler output signal enters peak amplifier through microstrip transmission line two and carries out the signal amplification, carries out variableimpedance through the matched impedance microstrip line afterwards and regulates; Finally by the signal of overmatching impedance microstrip line and signal through quatrter-wavelength line be coupled synthetic after output, transducer power gain and the efficient of its radio-frequency power amplifier all are optimized, transducer power gain can reach 15dB, the ldB compression point can reach 47dBm, the utility model adopts the variableimpedance coupling of quatrter-wavelength line impedance transformation and matched impedance microstrip line, so that radio-frequency power amplifier has improved transducer power gain greatly, solve radio-frequency power amplifier and worked in the total power section and make its efficient high, but existed the envelope of modulation signal to have certain distortion factor problem.
Description of drawings:
Fig. 1 is that the utility model forms schematic diagram.
Embodiment:
A kind of integrated symmetric form radio-frequency power amplifier (see figure 1), it comprises coupler, coupler is three-dB coupler, carrier amplifier and peak amplifier, 50 ohm of build-out resistors are connected with coupler, coupler output one is connected with the carrier amplifier input by microstrip transmission line one, coupler output two is connected with the peak amplifier input by microstrip transmission line two, the carrier amplifier output connects quatrter-wavelength line, peak amplifier output matching connection impedance microstrip line, quatrter-wavelength line is connected end and is connected with the matched impedance microstrip line, carry out the direct-coupling of two-way output signal.
The element that the present embodiment adopts is:
50 ohm of build-out resistors: the special-purpose 50 ohm of build-out resistors of radio frequency;
Microstrip transmission line one: matched impedance microstrip line;
Microstrip transmission line two: matched impedance microstrip line;
Three-dB coupler: power division is the coupler of each 50% input power of two-way;
Carrier amplifier: the radio-frequency carrier amplifier is used for the power amplification of input signal;
Peak amplifier: the radio frequency peak amplifier, the gain that is used for input signal is amplified;
The matched impedance microstrip line: electrical length is the matched impedance microstrip line of variable wavelength;
Quatrter-wavelength line: electrical length is quarter-wave matched impedance microstrip line.
Operation principle of the present utility model is: signal input part carries out the signal input, exporting respectively carrier amplifier and peak amplifier to through minute two road signals behind the three-dB coupler carries out signal and amplifies, the output signal of carrier amplifier is carried out the characteristic conversion through quatrter-wavelength line, the output signal of peak amplifier is carried out variableimpedance through the matched impedance microstrip line and is regulated, after carrying out direct-coupling finally by the signal of overmatching impedance microstrip line and signal through quatrter-wavelength line, form signal output.
Claims (2)
1. integrated symmetric form radio-frequency power amplifier, it comprises coupler, carrier amplifier and peak amplifier, 50 ohm of build-out resistors are connected with coupler, coupler output one is connected with the carrier amplifier input by microstrip transmission line one, coupler output two is connected with the peak amplifier input by microstrip transmission line two, it is characterized in that: the carrier amplifier output connects quatrter-wavelength line, peak amplifier output matching connection impedance microstrip line, quatrter-wavelength line and the connection of being connected of matched impedance microstrip line.
2. a kind of integrated symmetric form radio-frequency power amplifier according to claim 1, it is characterized in that: coupler is three-dB coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458870 CN202772845U (en) | 2012-09-11 | 2012-09-11 | Integrated symmetric type radio frequency power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220458870 CN202772845U (en) | 2012-09-11 | 2012-09-11 | Integrated symmetric type radio frequency power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202772845U true CN202772845U (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220458870 Expired - Fee Related CN202772845U (en) | 2012-09-11 | 2012-09-11 | Integrated symmetric type radio frequency power amplifier |
Country Status (1)
| Country | Link |
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| CN (1) | CN202772845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107078694A (en) * | 2014-10-06 | 2017-08-18 | 瑞典爱立信有限公司 | Amplifier circuits and methods |
-
2012
- 2012-09-11 CN CN 201220458870 patent/CN202772845U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107078694A (en) * | 2014-10-06 | 2017-08-18 | 瑞典爱立信有限公司 | Amplifier circuits and methods |
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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 |
Granted publication date: 20130306 Termination date: 20140911 |
|
| EXPY | Termination of patent right or utility model |