CN218183313U - Power amplifier with reconfigurable matching network and communication equipment - Google Patents
Power amplifier with reconfigurable matching network and communication equipment Download PDFInfo
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- CN218183313U CN218183313U CN202222359859.4U CN202222359859U CN218183313U CN 218183313 U CN218183313 U CN 218183313U CN 202222359859 U CN202222359859 U CN 202222359859U CN 218183313 U CN218183313 U CN 218183313U
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- 238000004891 communication Methods 0.000 title claims description 8
- 239000003990 capacitor Substances 0.000 claims abstract description 98
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
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Abstract
The embodiment of the utility model discloses a matching network which comprises an input matching network, a first transformer T1, a first-stage amplifying circuit, a second transformer T2, a second-stage amplifying circuit, a third transformer T3 and an output matching network; the input matching network comprises a first capacitor C11, a second capacitor C12 and a first switch S1, wherein a first end of the first capacitor C11 and a first end of the second capacitor C12 are used for inputting a single-ended radio frequency signal and are both connected with an input end of the first transformer T1, the first switch S1 selectively grounds a second end of the first capacitor C11 or a second end of the second capacitor C12, the other input end of the first transformer T1 is grounded, and the first transformer T1 is used for converting the single-ended radio frequency signal into two paths of differential signals, so that the first capacitor C11 and the second capacitor C12 are selectively connected through the first switch S1 to realize reconstruction of the input matching network, thereby realizing switching of different working frequency bands.
Description
Technical Field
The utility model relates to the field of electronic technology, especially, relate to a reconfigurable power amplifier of matching network and communication equipment.
Background
As shown in fig. 1, a conventional rf power amplifier has a first stage PA1 and a second stage PA2, and an inductor L1, a capacitor C1, an inductor L2, and a capacitor C2 are output matching networks of the rf power amplifier. The radio frequency signal is input from a radio frequency signal input port RFin, amplified by a first-stage power amplifier PA1 and a second-stage power amplifier PA2, and fed from a radio frequency signal output port RFout to an antenna ANT through an output matching network to be emitted.
The working frequency of the radio frequency power amplifier is determined by matching networks of all levels, and the matching network of the traditional radio frequency power amplifier is usually fixed, so that the working frequency of the radio frequency power amplifier is also fixed, and along with the upgrade of a mobile communication network, communication equipment needs to select different frequency bands in different mobile communication network standards for radio frequency signal transmission.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a reconfigurable radio frequency power amplifier of matching network and communication equipment can make the radio frequency power amplifier selectivity work in the frequency channel of difference, widens radio frequency power amplifier's application range, is favorable to reduce cost and components and parts quantity.
In order to solve the above technical problem, in a first aspect, the present invention provides a radio frequency power amplifier with a reconfigurable matching network, which includes an input matching network, a first transformer T1, a first-stage amplifying circuit, a second transformer T2, a second-stage amplifying circuit, a third transformer T3, and an output matching network;
the input matching network comprises a first capacitor C11, a second capacitor C12 and a first switch S1, wherein a first end of the first capacitor C11 and a first end of the second capacitor C12 are used for inputting a single-ended radio frequency signal and are both connected with one input end of the first transformer T1, the first switch S1 selectively grounds a second end of the first capacitor C11 or a second end of the second capacitor C12, the other input end of the first transformer T1 is grounded, and the first transformer T1 is used for converting the single-ended radio frequency signal into two paths of differential signals;
the first-stage amplification circuit comprises two first-stage power amplifiers, the second-stage amplification circuit comprises two second-stage power amplifiers, two output ends of the first transformer T1 are connected to input ends of the two first-stage power amplifiers respectively, output ends of the two first-stage power amplifiers are connected to two input ends of the second transformer T2 respectively, two output ends of the second transformer T2 are connected to input ends of the two second-stage power amplifiers respectively, output ends of the two second-stage power amplifiers are connected to two input ends of the third transformer T3 respectively, and two output ends of the third transformer T3 are connected to the output matching network.
Further, a third capacitor C13 is further included, and a first end and a second end of the third capacitor C13 are respectively connected to two output ends of the second transformer T2.
Further, the third capacitor C13 resonates with the secondary winding inductance of the second transformer T2 at a second harmonic.
Further, the output matching network includes a fourth capacitor C14, a fifth capacitor C15 and a second switch S2, a first end of the fourth capacitor C14 and a first end of the fifth capacitor C15 are both connected to an output end of the third transformer T3, and the second switch S2 selectively connects the second end of the fourth capacitor C14 or the second end of the fifth capacitor C15 to ground.
Further, the output matching network further includes a sixth capacitor C16, a seventh capacitor C17, and a third switch S3, wherein a first end of the sixth capacitor C16 and a first end of the seventh capacitor C17 are both connected to another output end of the third transformer T3, and the third switch S3 selectively connects the second end of the sixth capacitor C16 or the second end of the seventh capacitor C17 to ground.
Further, the first switch S1, the second switch S2, and the third switch S3 are all rf switches.
Further, the primary coil inductance of the first transformer T1 resonates with the first capacitor C11 and the second capacitor C12 at different operating frequency bands, respectively.
A second aspect of the present invention provides a communication device, including any one of the above radio frequency power amplifiers with reconfigurable matching network.
Has the advantages that: the utility model discloses a radio frequency power amplifier with reconfigurable matching network, which comprises an input matching network, a first transformer T1, a first-stage amplifying circuit, a second transformer T2, a second-stage amplifying circuit, a third transformer T3 and an output matching network; the input matching network comprises a first capacitor C11, a second capacitor C12 and a first switch S1, a first end of the first capacitor C11 and a first end of the second capacitor C12 are used for inputting a single-ended radio frequency signal and are both connected with an input end of the first transformer T1, the first switch S1 selectively grounds a second end of the first capacitor C11 or a second end of the second capacitor C12, and the other input end of the first transformer T1 is grounded, so that the first capacitor C11 and the second capacitor C12 are selectively switched on by the first switch S1 to realize reconfiguration of the input matching network, thereby realizing switching of different operating frequency bands.
Drawings
The technical solution and the advantages of the present invention will be apparent from the detailed description of the embodiments of the present invention, which is provided in the accompanying drawings.
Fig. 1 is a circuit schematic of a prior art rf power amplifier;
fig. 2 is a schematic circuit diagram of a radio frequency power amplifier with a reconfigurable matching network according to the present invention.
Detailed Description
Referring to the drawings, wherein like reference numbers refer to like elements, the principles of the present invention are illustrated as being implemented in a suitable computing environment. The following description is based on illustrated embodiments of the invention and should not be taken as limiting the invention with regard to other embodiments not described in detail herein.
Referring to fig. 2, in the radio frequency power amplifier with reconfigurable matching network according to the embodiment of the present invention, the radio frequency power amplifier includes an input matching network, a first transformer T1, a first-stage amplifying circuit, a second transformer T2, a second-stage amplifying circuit, a third transformer T3, and an output matching network.
The input matching network includes a first capacitor C11, a second capacitor C12, and a first switch S1, where a first end of the first capacitor C11 and a first end of the second capacitor C12 are both connected to an input end of the first transformer T1, the first switch S1 selectively connects a second end of the first capacitor C11 or a second end of the second capacitor C12 to ground, and another input end of the first transformer T1 to ground.
The first-stage amplifying circuit comprises two first-stage power amplifiers PA11, the second-stage amplifying circuit comprises two second-stage power amplifiers PA12, two output ends of the first transformer T1 are connected to the input ends of the two first-stage power amplifiers PA11 respectively, the output ends of the two first-stage power amplifiers PA11 are connected to two input ends of the second transformer T2 respectively, two output ends of the second transformer T2 are connected to the input ends of the two second-stage power amplifiers PA12 respectively, the output ends of the two second-stage power amplifiers PA12 are connected to two input ends of the third transformer T3 respectively, and two output ends of the third transformer T3 are connected to the output matching network.
As shown in fig. 2, a single-ended radio frequency signal is input from a signal input terminal RFin to a first capacitor C11 and a second capacitor C12, and is then transmitted to a first transformer T1 after passing through an input matching network, the first transformer T1 is configured to convert the single-ended radio frequency signal into two differential signals and couple the two differential signals to two first-stage power amplifiers PA11 of a first-stage amplifying circuit, the two first-stage power amplifiers PA11 are configured to amplify the two differential signals and then transmit the two differential signals to an interstage second transformer T2, the two amplified differential signals are coupled to two second-stage power amplifiers PA12 of a second-stage amplifying circuit by the second transformer T2, the two second-stage power amplifiers PA12 respectively amplify the two differential signals for the second time and then transmit the two differential signals to a third transformer T3, the third transformer T3 is configured to synthesize the two amplified differential signals into one radio frequency signal, and the synthesized single radio frequency signal is output from a signal output terminal RFout.
Wherein, the utility model discloses an among the input matching network, through first switch S1 selectivity switch-on first electric capacity C11 and second electric capacity C12, realize the reconsitution of input matching network from this, with this switching that realizes different operating frequency bands, can be connected first switch S1 selection with first electric capacity C11 or second electric capacity C12 according to the working frequency channel of difference, can make the selective operation of radio frequency power amplifier at the frequency channel of difference from this, widen radio frequency power amplifier' S application range, be favorable to reduce cost and components and parts quantity.
The primary coil inductance of the first transformer T1 resonates with the first capacitor C11 and the second capacitor C12 at different operating frequency bands.
Further, in an embodiment of the present invention, the rf power amplifier further includes a third capacitor C13, and the first end and the second end of the third capacitor C13 are respectively connected to the two output ends of the second transformer T2. Wherein the third capacitor C13 resonates with the secondary winding inductance of the second transformer T2 at a second harmonic.
The output matching network includes a fourth capacitor C14, a fifth capacitor C15, and a second switch S2, wherein both a first end of the fourth capacitor C14 and a first end of the fifth capacitor C15 are connected to an output end of the third transformer T3, and the second switch S2 selectively connects the second end of the fourth capacitor C14 or the second end of the fifth capacitor C15 to ground.
Further, the output matching network further includes a sixth capacitor C16, a seventh capacitor C17, and a third switch S3, wherein a first end of the sixth capacitor C16 and a first end of the seventh capacitor C17 are both connected to another output end of the third transformer T3, and the third switch S3 selectively connects the second end of the sixth capacitor C16 or the second end of the seventh capacitor C17 to ground.
Therefore, the output matching network can be reconstructed through the switching action of the second switch S2 and the third switch S3 on the capacitor, that is, different output matching networks can be selected according to different working frequency bands, so that the working bandwidth of the radio frequency power amplifier is further expanded.
The first switch S1, the second switch S2, and the third switch S3 are all rf switches.
The utility model also provides a communication equipment, including the reconfigurable radio frequency power amplifier of the matching network of above-mentioned arbitrary embodiment.
Compared with the prior art, the radio frequency power amplifier of the utility model comprises an input matching network, a first transformer T1, a first-stage amplifying circuit, a second transformer T2, a second-stage amplifying circuit, a third transformer T3 and an output matching network; the input matching network comprises a first capacitor C11, a second capacitor C12 and a first switch S1, wherein a first end of the first capacitor C11 and a first end of the second capacitor C12 are used for inputting a single-ended radio frequency signal and are both connected with one input end of the first transformer T1, the first switch S1 selectively grounds a second end of the first capacitor C11 or a second end of the second capacitor C12, the other input end of the first transformer T1 is grounded, and the first transformer T1 is used for converting the single-ended radio frequency signal into two paths of differential signals; the first-stage amplification circuit comprises two first-stage power amplifiers, the second-stage amplification circuit comprises two second-stage power amplifiers, two output ends of the first transformer T1 are connected to input ends of the two first-stage power amplifiers respectively, output ends of the two first-stage power amplifiers are connected to two input ends of the second transformer T2 respectively, two output ends of the second transformer T2 are connected to input ends of the two second-stage power amplifiers respectively, output ends of the two second-stage power amplifiers are connected to two input ends of the third transformer T3 respectively, and two output ends of the third transformer T3 are connected to the output matching network. Therefore, the first capacitor C11 and the second capacitor C12 are selectively switched on through the first switch S1, reconfiguration of the input matching network is achieved, and switching of different working frequency bands is achieved.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be some changes in the specific implementation and application scope, and to sum up, the content of the present specification should not be understood as a limitation to the present invention.
Claims (8)
1. A radio frequency power amplifier with a reconfigurable matching network is characterized by comprising an input matching network, a first transformer T1, a first-stage amplifying circuit, a second transformer T2, a second-stage amplifying circuit, a third transformer T3 and an output matching network;
the input matching network comprises a first capacitor C11, a second capacitor C12 and a first switch S1, wherein a first end of the first capacitor C11 and a first end of the second capacitor C12 are used for inputting a single-ended radio frequency signal and are both connected with one input end of the first transformer T1, the first switch S1 selectively grounds a second end of the first capacitor C11 or a second end of the second capacitor C12, the other input end of the first transformer T1 is grounded, and the first transformer T1 is used for converting the single-ended radio frequency signal into two differential signals;
the first-stage amplification circuit comprises two first-stage power amplifiers, the second-stage amplification circuit comprises two second-stage power amplifiers, two output ends of the first transformer T1 are connected to input ends of the two first-stage power amplifiers respectively, output ends of the two first-stage power amplifiers are connected to two input ends of the second transformer T2 respectively, two output ends of the second transformer T2 are connected to input ends of the two second-stage power amplifiers respectively, output ends of the two second-stage power amplifiers are connected to two input ends of the third transformer T3 respectively, and two output ends of the third transformer T3 are connected to the output matching network.
2. The rf power amplifier of claim 1, further comprising a third capacitor C13, wherein a first terminal and a second terminal of the third capacitor C13 are respectively connected to two output terminals of the second transformer T2.
3. The rf power amplifier of claim 2, wherein the third capacitor C13 resonates with a secondary winding inductance of the second transformer T2 at a second harmonic.
4. The rf power amplifier of claim 1, wherein the output matching network comprises a fourth capacitor C14, a fifth capacitor C15 and a second switch S2, wherein a first terminal of the fourth capacitor C14 and a first terminal of the fifth capacitor C15 are both connected to an output terminal of the third transformer T3, and the second switch S2 selectively connects the second terminal of the fourth capacitor C14 or the second terminal of the fifth capacitor C15 to ground.
5. The RF power amplifier of claim 4, wherein the output matching network further comprises a sixth capacitor C16, a seventh capacitor C17, and a third switch S3, wherein a first terminal of the sixth capacitor C16 and a first terminal of the seventh capacitor C17 are both connected to another output terminal of the third transformer T3, and the third switch S3 selectively connects the second terminal of the sixth capacitor C16 or the second terminal of the seventh capacitor C17 to ground.
6. The RF power amplifier of claim 5, wherein the first switch S1, the second switch S2, and the third switch S3 are RF switches.
7. The rf power amplifier of claim 1, wherein the primary inductance of the first transformer T1 resonates with the first capacitor C11 and the second capacitor C12 at different operating frequency bands, respectively.
8. A communication device comprising a radio frequency power amplifier in which the matching network of any of claims 1-7 is reconfigurable.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222359859.4U CN218183313U (en) | 2022-09-05 | 2022-09-05 | Power amplifier with reconfigurable matching network and communication equipment |
| PCT/CN2023/109783 WO2024051381A1 (en) | 2022-09-05 | 2023-07-28 | Power amplifier with reconfigurable matching network and communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222359859.4U CN218183313U (en) | 2022-09-05 | 2022-09-05 | Power amplifier with reconfigurable matching network and communication equipment |
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| CN218183313U true CN218183313U (en) | 2022-12-30 |
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| CN202222359859.4U Active CN218183313U (en) | 2022-09-05 | 2022-09-05 | Power amplifier with reconfigurable matching network and communication equipment |
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| WO (1) | WO2024051381A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024051381A1 (en) * | 2022-09-05 | 2024-03-14 | 深圳飞骧科技股份有限公司 | Power amplifier with reconfigurable matching network and communication device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312278B (en) * | 2013-05-10 | 2016-04-20 | 华中科技大学 | A kind of power control system for radio-frequency power amplifier |
| US10284166B2 (en) * | 2017-06-27 | 2019-05-07 | Intel Corporation | Transmitter matching network using a transformer |
| CN207588812U (en) * | 2017-09-08 | 2018-07-06 | 牛旭 | A kind of restructural radio frequency and microwave power amplifier |
| CN109787569B (en) * | 2017-11-14 | 2023-08-01 | 锐迪科微电子科技（上海）有限公司 | Multimode multifrequency radio frequency power amplifier |
| CN216162678U (en) * | 2021-09-16 | 2022-04-01 | 深圳飞骧科技股份有限公司 | Radio frequency power amplifier |
| CN215990714U (en) * | 2021-09-27 | 2022-03-08 | 深圳飞骧科技股份有限公司 | Radio frequency power amplifier and radio frequency front end architecture applied to 5G communication system |
| CN216390930U (en) * | 2021-11-09 | 2022-04-26 | 深圳飞骧科技股份有限公司 | Radio frequency power amplifier, chip and electronic equipment |
| CN216390925U (en) * | 2021-11-18 | 2022-04-26 | 深圳飞骧科技股份有限公司 | Output matching network, radio frequency power amplifier and wireless communication device |
| CN218183313U (en) * | 2022-09-05 | 2022-12-30 | 深圳飞骧科技股份有限公司 | Power amplifier with reconfigurable matching network and communication equipment |
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2022
- 2022-09-05 CN CN202222359859.4U patent/CN218183313U/en active Active
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- 2023-07-28 WO PCT/CN2023/109783 patent/WO2024051381A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024051381A1 (en) * | 2022-09-05 | 2024-03-14 | 深圳飞骧科技股份有限公司 | Power amplifier with reconfigurable matching network and communication device |
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| WO2024051381A1 (en) | 2024-03-14 |
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