CN103107783B - Radio-frequency power amplifier - Google Patents
Radio-frequency power amplifier Download PDFInfo
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- CN103107783B CN103107783B CN201210570088.1A CN201210570088A CN103107783B CN 103107783 B CN103107783 B CN 103107783B CN 201210570088 A CN201210570088 A CN 201210570088A CN 103107783 B CN103107783 B CN 103107783B
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Abstract
The invention discloses radio-frequency power amplifier, be made up of input matching circuit, WIFI power amplification circuit one, WIFI power amplification circuit two and power combing and output matching circuit, it is characterized in that: described input matching circuit by the input resistant matching of WIFI power amplification circuit one and WIFI power amplification circuit two to 50 ohm; The radiofrequency signal received is carried out power amplification by WIFI power amplification circuit one and WIFI power amplification circuit two respectively, outputs to described output matching circuit simultaneously and carries out power combing; The output of WIFI power amplification circuit one and WIFI power amplification circuit two is carried out power combing by described output matching circuit, and the output impedance of WIFI power amplification circuit one and WIFI power amplification circuit two is matched 50 ohm; The present invention has the advantages that cost is low, efficiency is high, volume is little, gain is high, good heat dissipation, operating voltage are low and reliability is high, has a good application prospect.
Description
Technical field
The present invention relates to power amplification circuit, be specifically related to the radio-frequency power amplifier utilizing power synthetic technique to realize.
Background technology
Along with the development of science and technology, the dependence of the mankind to satellite navigation is more and more stronger, in this field, there is more ripe GPS, GPRS architecture, the Beidou satellite navigation etc. of GLONASS and China, particularly the Beidou satellite navigation of China has the unique advantage of oneself, that is exactly the Big Dipper 2 generation and the Big Dipper 1 generation satellite navigation system and deposits, the accurate location in the Big Dipper 2 generation and the short message communication function in the Big Dipper 1 generation can be utilized to develop satellite navigation terminal with Chinese characteristics, in sea fishery, forest fire protection, earthquake relief work, mapping measurement waits the field of GPRS weakness to have and important effect, have in the navigation system of short message communication function this, the power amplification transmitted is a very important key technology, also be the key factor that restriction Beidou satellite navigation terminal develops to miniaturization, increasingly mature along with current Beidou satellite system, the development of the hand-held multimode terminal of the Big Dipper is trend from now on, this just requires a kind of high-performance, low cost, the power amplifier module of small size.
For many years, the Big Dipper 1 substitute family terminal power amplifier section mainly relies on the large power triode of the producer such as import " Fujitsu ", " Mitsubishi " to add complicated match circuit realization; Efficiency is low, and the power efficiency of transmitting only has about 30%, creates larger waste to the energy, in the handheld device, because efficiency is low, makes the flying power of equipment poor; Operating voltage is high, and operating voltage is 11V or 28V, for handheld device, makes the volume of battery very large, constrains the trend that handheld device develops to ting model; Gain is low, and power gain only has about 10dB, needs to increase in front end multistagely to push away amplifier in advance when global design, such that complete machine cost increases, volume becomes large; Volume is large, because the volume of pliotron own is large, adds that peripheral circuit is complicated, makes power amplifier partial volume very large, also constrains the trend that handheld device develops to ting model.
Summary of the invention
Technical problem to be solved by this invention is to provide radio-frequency power amplifier.
In order to solve the problems of the technologies described above, technical scheme of the present invention is, for radio-frequency power amplifier, be made up of input matching circuit, WIFI power amplification circuit one, WIFI power amplification circuit two and power combing and output matching circuit, it is characterized in that: described input matching circuit by the input resistant matching of WIFI power amplification circuit one and WIFI power amplification circuit two to 50 ohm; Described input matching circuit is made up of electric capacity 13 and radio frequency microstrip line one, two, three; Electric capacity 13 is connected between signal input part and ground; Radio-frequency input signals is input to WIFI power amplification circuit one by radio frequency microstrip line one, two, and radio-frequency input signals is also input to WIFI power amplification circuit two by radio frequency microstrip line one, three; The radiofrequency signal received is carried out power amplification by WIFI power amplification circuit one and WIFI power amplification circuit two respectively, outputs to described output matching circuit simultaneously and carries out power combing; The output of WIFI power amplification circuit one and WIFI power amplification circuit two is carried out power combing by described output matching circuit, and the output impedance of WIFI power amplification circuit one and WIFI power amplification circuit two is matched 50 ohm; Described output matching circuit is made up of radio frequency microstrip line four ~ seven, electric capacity nine ~ 12; The output signal of described WIFI power amplification circuit one is exported by radio frequency microstrip line four, five and electric capacity 11; The output signal of described WIFI power amplification circuit two is exported by radio frequency microstrip line six, seven and electric capacity 12; Between the connected node that electric capacity nine is connected to radio frequency microstrip line four and radio frequency microstrip line five and ground; Between the connected node that electric capacity ten is connected to radio frequency microstrip line six and radio frequency microstrip line seven and ground.
In radio frequency circuit system, system impedance is 50 ohm, and for power amplification circuit in order to ensure maximum power output, input and output impedance is all optimized to maximum power place and impedance is poor, in 50 Ohms system, optimum performance is played in order to make module, need to carry out impedance matching, in the technical program, the function of input matching circuit is exactly to 50 ohm by the input resistant matching of two panels WIFI power amplification circuit; And the function of output matching and power synthesis circuit power combing is carried out in the output of WIFI power amplification circuit and the output impedance of power amplification circuit matched 50 Ohms system, prevent the signal reflection phenomenon because impedance mismatch causes.Input matching circuit of the present invention and power combing and output matching circuit structure simple, efficiency is high, and gain is large, does not need to increase in front end to push away amplifier in advance, and cost is low, and volume is little.
Because the present invention adopts two panels WIFI power amplification circuit, be embodied as times power by power combing mode to amplify, for each power amplification circuit, the power shared only has the half of power output, compared with the power amplifier chips of SIP form, heat radiation dispersion, substantially increases overall burn-out resistance, improves reliability.
According to a kind of preferred version of radio-frequency power amplifier of the present invention, described WIFI power amplification circuit one and WIFI power amplification circuit two include WIFI power amplification circuit.
According to a kind of preferred version of radio-frequency power amplifier of the present invention, described WIFI power amplification circuit is YP2233W or YP2027W or YP3035W.
The beneficial effect of radio-frequency power amplifier of the present invention is: the present invention adopts general WIFI power amplifier, utilizes power synthetic technique and match circuit, meets the requirement of Beidou handset power amplification, and will greatly increase the flying power of handheld device; Have the advantages that cost is low, efficiency is high, volume is little, gain is high, good heat dissipation, operating voltage are low and reliability is high, have a good application prospect.
Accompanying drawing explanation
Fig. 1 is the theory diagram of radio-frequency power amplifier of the present invention.
Fig. 2 is the schematic diagram of radio-frequency power amplifier of the present invention.
Embodiment
See Fig. 1 and Fig. 2, radio-frequency power amplifier is made up of input matching circuit M1, WIFI power amplification circuit one M2, WIFI power amplification circuit two M4 and power combing and output matching circuit M3, it is characterized in that: described input matching circuit M1 by the input resistant matching of WIFI power amplification circuit one M2 and WIFI power amplification circuit two M4 to 50 ohm; Described input matching circuit M1 is made up of electric capacity C13 and radio frequency microstrip line X1, X2, X3; Electric capacity C13 is connected between signal input part and ground; Radio-frequency input signals is input to WIFI power amplification circuit one M2 by radio frequency microstrip line X1, X2, and radio-frequency input signals is also input to WIFI power amplification circuit two M4 by radio frequency microstrip line X1, X3; The radiofrequency signal received is carried out power amplification by WIFI power amplification circuit one M2 and WIFI power amplification circuit two M4 respectively, outputs to described output matching circuit M3 simultaneously and carries out power combing; The output of WIFI power amplification circuit one M2 and WIFI power amplification circuit two M4 is carried out power combing by described output matching circuit M3, and the output impedance of WIFI power amplification circuit one M2 and WIFI power amplification circuit two M4 is matched 50 ohm; Described output matching circuit M3 is made up of radio frequency microstrip line X4 ~ X7, electric capacity C9 ~ C12; The output signal of described WIFI power amplification circuit one M2 is exported by radio frequency microstrip line X4, X5 and electric capacity C11; The output signal of described WIFI power amplification circuit two M4 is exported by radio frequency microstrip line X6, X7 and electric capacity C12; Between the connected node that electric capacity C9 is connected to radio frequency microstrip line X4 and radio frequency microstrip line X5 and ground; Between the connected node that electric capacity C10 is connected to radio frequency microstrip line X6 and radio frequency microstrip line X7 and ground.
In a particular embodiment, described WIFI power amplification circuit one M2 and WIFI power amplification circuit two M4 includes WIFI power amplification circuit, WIFI power amplification circuit one M2 with WIFI power amplification circuit two M4 phase of output signal must ensure consistent with amplitude, realizes by adjustment radio frequency microstrip line X4 and radio frequency microstrip line X6 and electric capacity C9, C10; Described WIFI power amplification circuit can adopt YP2233W or YP2027W or YP3035W etc.
Adopt YP2233W to test the present invention with WIFI power amplification circuit, the performance index of product are as table 1.
Table 1: product performance index test result
As can be seen from Table 1: efficiency of the present invention is high, efficiency, up to 45%, will increase the flying power of handheld device greatly; Gain is high, and gain is up to 26dB; Operating voltage is low, and this module adopts 5V Power supply; The present invention meets the requirement of Beidou satellite navigation multimode hand-held terminal device completely.
Above the specific embodiment of the present invention is described, but, the scope being not limited only to embodiment of the present invention's protection.
Claims (3)
1. radio-frequency power amplifier, be made up of input matching circuit (M1), WIFI power amplification circuit one (M2), WIFI power amplification circuit two (M4) and power combing and output matching circuit (M3), it is characterized in that: described input matching circuit (M1) by the input resistant matching of WIFI power amplification circuit one (M2) and WIFI power amplification circuit two (M4) to 50 ohm; Described input matching circuit (M1) is made up of electric capacity 13 and radio frequency microstrip line one, two, three; Electric capacity 13 is connected between signal input part and ground; Radio-frequency input signals is input to WIFI power amplification circuit one (M2) by radio frequency microstrip line one, two, and radio-frequency input signals is also input to WIFI power amplification circuit two (M4) by radio frequency microstrip line one, three; The radiofrequency signal received is carried out power amplification by WIFI power amplification circuit one (M2) and WIFI power amplification circuit two (M4) respectively, outputs to described output matching circuit (M3) simultaneously and carries out power combing; The output of WIFI power amplification circuit one (M2) and WIFI power amplification circuit two (M4) is carried out power combing by described output matching circuit (M3), and the output impedance of WIFI power amplification circuit one (M2) and WIFI power amplification circuit two (M4) is matched 50 ohm; Described output matching circuit (M3) is made up of radio frequency microstrip line four, radio frequency microstrip line five, radio frequency microstrip line six and radio frequency microstrip line seven and electric capacity nine, electric capacity ten, electric capacity 11 and electric capacity 12; The output signal of described WIFI power amplification circuit one (M2) is exported by radio frequency microstrip line four, five and electric capacity 11; The output signal of described WIFI power amplification circuit two (M4) is exported by radio frequency microstrip line six, seven and electric capacity 12; Between the connected node that electric capacity nine is connected to radio frequency microstrip line four and radio frequency microstrip line five and ground; Between the connected node that electric capacity ten is connected to radio frequency microstrip line six and radio frequency microstrip line seven and ground.
2. radio-frequency power amplifier according to claim 1, is characterized in that: described WIFI power amplification circuit one (M2) and WIFI power amplification circuit two (M4) include WIFI power amplification circuit.
3. radio-frequency power amplifier according to claim 2, is characterized in that: described WIFI power amplification circuit is YP2233W or YP2027W or YP3035W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210570088.1A CN103107783B (en) | 2012-12-25 | 2012-12-25 | Radio-frequency power amplifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210570088.1A CN103107783B (en) | 2012-12-25 | 2012-12-25 | Radio-frequency power amplifier |
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| Publication Number | Publication Date |
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| CN103107783A CN103107783A (en) | 2013-05-15 |
| CN103107783B true CN103107783B (en) | 2016-01-20 |
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| CN201210570088.1A Active CN103107783B (en) | 2012-12-25 | 2012-12-25 | Radio-frequency power amplifier |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997305A (en) * | 2014-05-19 | 2014-08-20 | 天津大学 | Three-frequency-band radio frequency power amplifier impedance matching circuit |
| CN104377416A (en) * | 2014-11-07 | 2015-02-25 | 江苏博普电子科技有限责任公司 | Broadband matching circuit applicable to C-wave-band GaN microwave high power device |
| CN105743450A (en) * | 2016-01-29 | 2016-07-06 | 上海华虹宏力半导体制造有限公司 | Radio frequency power amplifier |
| CN106921354B (en) * | 2017-02-08 | 2020-07-28 | 中国科学院微电子研究所 | Broadband matching circuit for radio frequency power amplifier |
| CN110311832B (en) * | 2019-06-25 | 2021-02-05 | 深圳市吉祥腾达科技有限公司 | Wireless signal amplifier working stability test system |
| CN112511114B (en) * | 2020-12-11 | 2023-02-24 | 重庆西南集成电路设计有限责任公司 | Low-noise amplifier with power distribution function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2555926B2 (en) * | 1993-04-28 | 1996-11-20 | 日本電気株式会社 | Intermediate frequency amplifier circuit |
| CN201398180Y (en) * | 2009-03-31 | 2010-02-03 | 武汉正维电子技术有限公司 | Doherty high-efficiency amplifier with dual carrier amplifier |
| CN101699767A (en) * | 2009-10-21 | 2010-04-28 | 上海华为技术有限公司 | Feed circuit of radio frequency power amplifier |
-
2012
- 2012-12-25 CN CN201210570088.1A patent/CN103107783B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2555926B2 (en) * | 1993-04-28 | 1996-11-20 | 日本電気株式会社 | Intermediate frequency amplifier circuit |
| CN201398180Y (en) * | 2009-03-31 | 2010-02-03 | 武汉正维电子技术有限公司 | Doherty high-efficiency amplifier with dual carrier amplifier |
| CN101699767A (en) * | 2009-10-21 | 2010-04-28 | 上海华为技术有限公司 | Feed circuit of radio frequency power amplifier |
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| CN103107783A (en) | 2013-05-15 |
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