CN104485904A - Wideband radio frequency power amplifier - Google Patents
Wideband radio frequency power amplifier Download PDFInfo
- Publication number
- CN104485904A CN104485904A CN201510000165.3A CN201510000165A CN104485904A CN 104485904 A CN104485904 A CN 104485904A CN 201510000165 A CN201510000165 A CN 201510000165A CN 104485904 A CN104485904 A CN 104485904A
- Authority
- CN
- China
- Prior art keywords
- path
- stage
- power amplifier
- power
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001131 transforming effect Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Amplifiers (AREA)
Abstract
The invention discloses a radio frequency power amplifier having a wideband amplification characteristic. Because the driving stage and the power stage of the amplifier are independently matched with different frequency bands, the amplifier can keep more superior linearity and other properties within wider frequency bands.
Description
Technical field
The present invention relates to power electronic equipment technical field, particularly relate to a kind of power amplifier.
Background technology
Radio-frequency power amplifier (RFPA) is widely used in the every aspect of wireless telecommunications system and electronic system, as mobile phone, router, panel computer and other kinds mobile terminal etc.In wireless telecommunications, the modulated signal made, is sent by other assemblies such as antennas after needing signal to be amplified to by power amplifier the power output satisfied the demands.Along with the development of wireless telecommunications, particularly 3G/4G mobile communication is extensive universal, has higher requirement to communication system.The many frequency ranges of 3G/4G are in side frequency, if all make single-frequency power amplifier, can cause very large cost and space pressure.
Traditional wideband power amplifer circuit as shown in Figure 1, simply by the single-frequency power amplifier of two different frequency ranges with a substrate in combination together, when frequency range 1 works, input signal enters from passage one, export through driving stage DA1 and power stage PA1, when frequency range 2 works, input signal enters from passage two, exports through driving stage DA2 and power stage PA2.
Because current mobile terminal more and more asks most little, light, thin, requiring with low cost simultaneously, when therefore for guaranteeing not reduce mobile terminal quality, simplifying Designing power amplifier, widen power amplifier bandwidth, improve integrated level and become the very important designing requirement of power amplifier.
Summary of the invention
The invention provides a kind of wideband power amplifer, complicated to solve prior art middle width strip Amplifier Design, the problem that cost is high.
To achieve these goals, now propose a plan as follows:
A kind of wideband power amplifer, comprising: the first path, for frequency range one; Alternate path, for frequency range two.
Preferably, also comprise:
The control circuit be connected with described first path and alternate path respectively, for controlling the bias voltage of described first path and alternate path, simultaneously for controlling the break-make of described switch, to make described multimode power amplifier realize high-power mode, middle power mode, low-power mode and other power modes.
The power supply circuits be connected with described first path and alternate path respectively.
Be connected to the first matching network of described power supply circuits and described first path, for logical direct current every interchange or transforming impedance.
Be connected to the second matching network of described power supply circuits and described alternate path, for logical direct current every interchange or transforming impedance.
As can be seen from above-mentioned technical scheme, power amplifier disclosed by the invention, described for the first path of frequency range one and the alternate path of frequency range two, when frequency range one works, switch S 1 is opened, and S2 closes, and power supply Vdd1 powers, Vdd2 ground connection, now intervalve matching circuit 3 forms two-stage LC matching network, and when frequency range two works, switch S 2 is opened, S1 closes, power supply Vdd2 powers, Vdd1 ground connection, now in intervalve matching circuit 3, L2 and C4 forms LC matching network, L1 and C3 forms parallel resonance to zone network.
During design, the preferential LC matching network regulating L2 and C4, makes the interstage matched impedance of frequency range two correspondence reach optimal value, then by the LC matching network of L1 and C3, makes the inter-stage impedance of frequency range one correspondence arrive optimal value by two-stage LC coupling.Due to can the inter-stage impedance of two stage cultivation two frequency ranges, thus widen the working band of amplifier.Two band sharing power stage PA, simplify output matching, reduce device size, improve integration density, reduce costs.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the power amplifier circuit figure of prior art.
Fig. 2 is power amplifier circuit figure disclosed in the embodiment of the present invention.
Fig. 3 is power amplifier circuit figure disclosed in another embodiment of the present invention.
Fig. 4 is power amplifier circuit figure disclosed in another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of power amplifier, to solve the problem that when low-power in prior art exports, efficiency has much room for improvement.
Concrete, as shown in Figure 2, comprising: the first path, for frequency range one; Alternate path, for frequency range two
Concrete operation principle is:
When frequency range two works, CMOS control circuit submodule provides biased to the driving stage DA2 of path two and power stage PA, and path one driving stage DA1 is biased to 0V, and control switch S1 closes simultaneously, and switch S 2 is opened, simultaneously power supply Vdd1 ground connection, and Vdd2 powers.
Now, for frequency range two, intervalve matching circuit 3 becomes the ground resonant network that is connected in series to that the LC matching network that is made up of C4 and L2 and C3 and L1 form and forms, C4 and L2 is determined by required best interstage matched impedance, the resonant network resonance frequency of C3 and L1 composition, away from working band, can be not considered.When frequency range one works, CMOS control circuit submodule provides biased to the driving stage DA1 of path one and power stage PA, and path two driving stage DA2 is biased to 0V, and control switch S2 closes simultaneously, and switch S 1 is opened, simultaneously power supply Vdd2 ground connection, and Vdd1 powers.
Now, for frequency range one, intervalve matching circuit 3 becomes the LC matching network that is made up of C4 and L2 and C3 and L1 and forms LC matching network two sections of couplings and form, and the value of C4 and L2 is determined, by regulating the value of C3 and L1, inter-stage impedance is matched the optimum impedance needed for frequency range one.
In sum, the LC matching network that the interstage matched of frequency range two is made up of C4 and L2 is determined, on the basis of C4 and L2 that the interstage matched of frequency range one is determined in frequency range two, determined by the LC matching network of C3 and L1 composition, like this, just widened the bandwidth of interstage matched, thus widen whole amplifier can working band.
The power amplifier that the present embodiment provides, owing to having shared output power stage PA, has simplified the design of output matching part, simultaneously.Simplify intervalve matching circuit, thus simplify the design of whole amplifier, reduce cost.
Another embodiment of the present invention additionally provides another power amplifier, as shown in Figure 3, comprising:
First path, for frequency range one; Alternate path, for frequency range two.
Concrete, when corresponding to frequency range one and frequency range two, frequency phase-difference is not far, in above-mentioned execution mode, input matching circuit 1 and match circuit two can be merged into a match circuit, i.e. match circuit 1 in Fig. 3, and before being placed in switch S 1 and S2.
Connection and the concrete operation principle of the present embodiment other components and parts interior are same as the previously described embodiments, repeat no more herein.
Another embodiment of the present invention additionally provides another power amplifier, as shown in Figure 4, comprising:
First path, for frequency range one; Alternate path, for frequency range two.
Concrete, when frequency phase-difference corresponding to frequency range one and frequency range two is not far and when requiring input isolation, can save switch S 1 and S2.
Connection and the concrete operation principle of the present embodiment other components and parts interior are same as the previously described embodiments, repeat no more herein.
Claims (9)
1. a wideband power amplifer, is characterized in that, comprising: the first path, frequency range one path; Alternate path, frequency range two path.
2. multimode power amplifier according to claim 1, is characterized in that, also comprise:
The switch be connected with described first path and alternate path respectively, in order to control the turn-on and turn-off of frequency range one or frequency range 2;
This switch input terminal connects input signal, and output is connected the driving tube DA1 of the first path and the driving tube DA2 of alternate path respectively by match circuit 1 with match circuit 2.
3. multimode power amplifier according to claim 1, it is characterized in that, the control circuit be connected with described first path and alternate path respectively, for controlling the bias voltage of described first path and alternate path, simultaneously for controlling the break-make of described switch, to make described power amplifier different frequency range relatively independent, realize inter-stage Broadband Matching;
Be connected to the matching network 1 of described switch and described first path driving tube DA1, for Input matching;
Be connected to the matching network 2 of described switch and described first path driving tube DA2, for Input matching.
4. multimode power amplifier according to claim 1, is characterized in that, the power supply circuits be connected with described first path and alternate path respectively.
5. multimode power amplifier according to claim 1, is characterized in that, the power stage PA be connected with described first path and alternate path respectively.
6. multimode power amplifier according to claim 1, is characterized in that, be connected to the matching network 3 of described power supply circuits and described first path and alternate path, for logical direct current every interchange or transforming impedance.
7. multimode power amplifier according to claim 2, it is characterized in that, described first path is connected by the input of matching network 3 with power tube PA with alternate path.
8. multimode power amplifier according to claim 2, it is characterized in that, described first path comprises:
Input is as the driving stage of described first path input; The feeder ear of described driving stage is connected with described power supply circuits; The control end of described driving stage is connected with described control circuit;
The power stage PA that input is connected with described driving stage output; The feeder ear of described power stage is connected with described power supply circuits; The control end of described power stage is connected with described control circuit.
9. multimode power amplifier according to claim 2, it is characterized in that, described alternate path comprises:
Input is as the driving stage of described alternate path input; The feeder ear of described driving stage is connected with described power supply circuits; The control end of described driving stage is connected with described control circuit;
The power stage PA that input is connected with described driving stage output; The feeder ear of described power stage is connected with described power supply circuits; The control end of described power stage is connected with described control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000165.3A CN104485904A (en) | 2015-01-03 | 2015-01-03 | Wideband radio frequency power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000165.3A CN104485904A (en) | 2015-01-03 | 2015-01-03 | Wideband radio frequency power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104485904A true CN104485904A (en) | 2015-04-01 |
Family
ID=52760421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510000165.3A Pending CN104485904A (en) | 2015-01-03 | 2015-01-03 | Wideband radio frequency power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104485904A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253865A (en) * | 2016-08-01 | 2016-12-21 | 上海华虹宏力半导体制造有限公司 | Multi-frequency band radio-frequency power amplifier |
| CN109474245A (en) * | 2018-12-19 | 2019-03-15 | 佛山臻智微芯科技有限公司 | A kind of circuit structure of the broadband distributed amplifier with low-frequency gain compensation |
| CN119519613A (en) * | 2025-01-21 | 2025-02-25 | 上海凡麒微电子有限公司 | A multi-frequency amplifier |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0368329B1 (en) * | 1988-11-10 | 1996-10-23 | Hughes Aircraft Company | Self equalizing multi-stage radio frequency power amplifier |
| WO2002058230A1 (en) * | 2001-01-22 | 2002-07-25 | Wavics Co., Ltd. | Intelligent switching mode power amplifying apparatus |
| CN101615891A (en) * | 2009-07-23 | 2009-12-30 | 锐迪科微电子（上海）有限公司 | Radio-frequency (RF) power amplifier circuit, power control chip and radio-frequency power amplifying method |
| CN101656515A (en) * | 2009-09-04 | 2010-02-24 | 惠州市正源微电子有限公司 | High and low power combination circuit of radio frequency power amplifier |
| CN102969989A (en) * | 2012-11-26 | 2013-03-13 | 贵州中科汉天下电子有限公司 | Power synthesis device of radio frequency power amplifier |
-
2015
- 2015-01-03 CN CN201510000165.3A patent/CN104485904A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0368329B1 (en) * | 1988-11-10 | 1996-10-23 | Hughes Aircraft Company | Self equalizing multi-stage radio frequency power amplifier |
| WO2002058230A1 (en) * | 2001-01-22 | 2002-07-25 | Wavics Co., Ltd. | Intelligent switching mode power amplifying apparatus |
| CN101615891A (en) * | 2009-07-23 | 2009-12-30 | 锐迪科微电子（上海）有限公司 | Radio-frequency (RF) power amplifier circuit, power control chip and radio-frequency power amplifying method |
| CN101656515A (en) * | 2009-09-04 | 2010-02-24 | 惠州市正源微电子有限公司 | High and low power combination circuit of radio frequency power amplifier |
| CN102969989A (en) * | 2012-11-26 | 2013-03-13 | 贵州中科汉天下电子有限公司 | Power synthesis device of radio frequency power amplifier |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253865A (en) * | 2016-08-01 | 2016-12-21 | 上海华虹宏力半导体制造有限公司 | Multi-frequency band radio-frequency power amplifier |
| CN106253865B (en) * | 2016-08-01 | 2019-06-11 | 上海华虹宏力半导体制造有限公司 | Multi-frequency band radio-frequency power amplifier |
| CN109474245A (en) * | 2018-12-19 | 2019-03-15 | 佛山臻智微芯科技有限公司 | A kind of circuit structure of the broadband distributed amplifier with low-frequency gain compensation |
| CN119519613A (en) * | 2025-01-21 | 2025-02-25 | 上海凡麒微电子有限公司 | A multi-frequency amplifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8253485B2 (en) | Power amplifier | |
| US7688133B2 (en) | Power amplifier | |
| US9209769B2 (en) | Power amplifier and communication device | |
| US8207790B2 (en) | High frequency power amplifier | |
| KR20030090484A (en) | Amplification device | |
| CN109194291A (en) | A kind of one chip low-noise amplifier of the high-gain High Linear with bypass functionality | |
| US20150048887A1 (en) | Amplifier circuit | |
| JP5313970B2 (en) | High frequency power amplifier | |
| CN116961690A (en) | Dual-mode radio frequency front end module | |
| KR101771720B1 (en) | Multi-mode power amplifier | |
| CN104485904A (en) | Wideband radio frequency power amplifier | |
| US7420424B2 (en) | Power amplifier transmission line transformer | |
| CN106301255A (en) | Wideband power amplifer and active matching circuit thereof | |
| CN109327194A (en) | A kind of one chip low-noise amplifier of the broadband High Linear with bypass functionality | |
| CN110445471B (en) | Dual-band reconfigurable radio frequency power amplifier and control method thereof | |
| US10756727B2 (en) | Switching circuit and high-frequency module | |
| KR20080109301A (en) | Cascode structured high frequency amplifier | |
| KR101503973B1 (en) | Amplifying apparatus | |
| Fazel et al. | A highly efficient and linear class AB power amplifier for RFID application | |
| US10727789B2 (en) | Power amplification circuit | |
| KR20170073459A (en) | Power amplifier and wireless communication apparatus | |
| Kang et al. | A dual-mode RF CMOS power amplifier with nonlinear capacitance compensation | |
| He et al. | A Compact High Efficiency and High Power Front-end Module for GSM/EDGE/TD-SCDMA/TD-LTE Applications in 0.13 um CMOS | |
| US11894815B2 (en) | Power amplifier and electronic device | |
| CN108055011B (en) | Multi-mode radio frequency power amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150401 |