JP4950083B2 - 高効率電力増幅器 - Google Patents
高効率電力増幅器 Download PDFInfo
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- JP4950083B2 JP4950083B2 JP2008006086A JP2008006086A JP4950083B2 JP 4950083 B2 JP4950083 B2 JP 4950083B2 JP 2008006086 A JP2008006086 A JP 2008006086A JP 2008006086 A JP2008006086 A JP 2008006086A JP 4950083 B2 JP4950083 B2 JP 4950083B2
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- Prior art keywords
- amplifier
- peak
- output
- main amplifier
- input signal
- Prior art date
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- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 8
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 241001125929 Trisopterus luscus Species 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Images
Classifications
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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
- H03F3/60—Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
- H03F3/602—Combinations of several amplifiers
-
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0216—Continuous control
- H03F1/0222—Continuous control by using a signal derived from the input signal
-
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0288—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers
-
- 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
- H03F3/191—Tuned amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/102—A non-specified detector of a signal envelope being used in an amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/15—Indexing scheme relating to amplifiers the supply or bias voltage or current at the drain side of a FET being continuously controlled by a controlling signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/192—A hybrid coupler being used at the input of an amplifier circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/423—Amplifier output adaptation especially for transmission line coupling purposes, e.g. impedance adaptation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/99—A diode as rectifier being used as a detecting circuit in an amplifying circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Description
2 RF出力端子
3 メイン増幅器
4 エンベロープ検出回路
5 エンベロープ増幅器
6 遅延線路(遅延回路)
7 ドレインバイアス回路
8 ピーク増幅器
9、10、13、14、15、16 1/4波長線路
11 入力分配器
21 入力分配器
22 主増幅器
23 補助増幅器
24 インピーダンス変換器
25 入力レベル検出器
26 電圧制御器
27 バイアス制御器
Claims (4)
- メイン増幅器と、ピーク増幅器と、を備えた増幅器であって、
前記メイン増幅器のドレインバイアス回路には、変調波入力信号のエンベロープに従ってドレインバイアスを変調するエンベロープ増幅器とエンベロープ検出回路を備え、
前記ピーク増幅器の出力側に基本波周波数の1/4波長線路が接続され、
前記1/4波長線路のインピーダンス変換作用により、前記メイン増幅器は入力レベルの増加に従って、前記変調波入力信号の平均レベル時、低電圧動作にて最大効率が得られる低インピーダンス条件から、ピーク出力時、高電圧動作にて最大出力が得られる高インピーダンス条件に、負荷変動を可能としてなる、ことを特徴とする電力増幅器。 - メイン増幅器と、
ピーク増幅器と、
変調波入力信号を前記メイン増幅器と前記ピーク増幅器に電力分配する入力分配器と、
前記ピーク増幅器の出力側に接続された基本波周波数の1/4波長線路と、
前記メイン増幅器にバイアス電圧を与えるバイアス回路と、
を備え、
前記バイアス回路は、前記変調波入力信号を入力しエンベロープを検出するエンベロープ検出回路と、
前記エンベロープ検出回路の出力を増幅し前記メイン増幅器にバイアス電圧を供給するエンベロープ増幅器と、
を備え、
前記1/4波長線路の出力と前記メイン増幅器の出力が合成出力され、
前記1/4波長線路のインピーダンス変換作用により、前記メイン増幅器は入力レベルの増加に従って、前記変調波入力信号の平均レベル時、低電圧動作にて最大効率が得られる低インピーダンス条件から、ピーク出力時、高電圧動作にて最大出力が得られる高インピーダンス条件に、負荷変動を可能としてなる、ことを特徴とする電力増幅器。 - 前記メイン増幅器はAB級にバイアスされ、
前記ピーク増幅器はC級にバイアスされることを特徴とする請求項1又は2記載の電力増幅器。 - 前記ピーク増幅器は、一定のドレイン電圧で動作し、前記変調波入力信号のピークパワーレベル時のみオンして信号を増幅し、
前記メイン増幅器は、前記変調波入力信号の平均レベルでは低電圧動作し、前記変調波入力信号の瞬時ピークレベルでは高電圧動作する、ことを特徴とする請求項1又は2記載の電力増幅器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008006086A JP4950083B2 (ja) | 2008-01-15 | 2008-01-15 | 高効率電力増幅器 |
US12/351,876 US7843262B2 (en) | 2008-01-15 | 2009-01-12 | High efficiency power amplifier |
CN200910003472.1A CN101510760B (zh) | 2008-01-15 | 2009-01-15 | 高效率功率放大器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008006086A JP4950083B2 (ja) | 2008-01-15 | 2008-01-15 | 高効率電力増幅器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009171147A JP2009171147A (ja) | 2009-07-30 |
JP4950083B2 true JP4950083B2 (ja) | 2012-06-13 |
Family
ID=40850120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008006086A Expired - Fee Related JP4950083B2 (ja) | 2008-01-15 | 2008-01-15 | 高効率電力増幅器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7843262B2 (ja) |
JP (1) | JP4950083B2 (ja) |
CN (1) | CN101510760B (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8013680B2 (en) * | 2007-11-05 | 2011-09-06 | Viasat, Inc. | Distributed Doherty amplifiers |
KR20110026065A (ko) * | 2009-09-07 | 2011-03-15 | 삼성전자주식회사 | 무선통신 시스템에서 전력 제어를 지원하는 포락선 추적 전력 증폭기를 위한 장치 및 방법 |
KR101097391B1 (ko) | 2010-10-04 | 2011-12-23 | 주식회사 피플웍스 | 비대칭 도허티 전력 증폭 장치의 입력 분배 및 제어 장치 |
US8829998B2 (en) * | 2012-10-23 | 2014-09-09 | Airspan Networks Inc. | Doherty power amplifier |
WO2014069451A1 (ja) * | 2012-10-31 | 2014-05-08 | 日本電気株式会社 | 電力増幅器及び電力増幅方法 |
CN103430603B (zh) * | 2013-02-04 | 2016-09-28 | 华为技术有限公司 | 功率放大器、收发信机及基站 |
US9231527B2 (en) * | 2013-11-22 | 2016-01-05 | Qualcomm Incorporated | Circuits and methods for power amplification with extended high efficiency |
US9438186B2 (en) * | 2014-04-30 | 2016-09-06 | Freescale Semiconductor, Inc. | Power amplifier with envelope injection |
US9806681B2 (en) * | 2015-02-15 | 2017-10-31 | Skyworks Solutions, Inc. | Doherty power amplifier having AM-AM compensation |
CN106374863B (zh) * | 2016-10-12 | 2019-01-01 | 杭州电子科技大学 | 一种提高功率回退动态范围的Doherty功率放大器及其实现方法 |
CN110771033A (zh) * | 2017-06-23 | 2020-02-07 | 三菱电机株式会社 | 高频放大器 |
CN114553151B (zh) * | 2022-02-25 | 2022-12-20 | 优镓科技(苏州)有限公司 | 基于自适应偏置的Doherty功率放大器 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5757229A (en) * | 1996-06-28 | 1998-05-26 | Motorola, Inc. | Bias circuit for a power amplifier |
US6097252A (en) * | 1997-06-02 | 2000-08-01 | Motorola, Inc. | Method and apparatus for high efficiency power amplification |
KR100553252B1 (ko) * | 2002-02-01 | 2006-02-20 | 아바고테크놀로지스코리아 주식회사 | 휴대용 단말기의 전력 증폭 장치 |
JP4248367B2 (ja) * | 2003-10-21 | 2009-04-02 | 島田理化工業株式会社 | 電力合成形高効率増幅器 |
KR100957417B1 (ko) * | 2004-12-08 | 2010-05-11 | 삼성전자주식회사 | 무선 통신 시스템에서 스위칭 구조를 이용한 전력 증폭 장치 및 제어 방법 |
JP2007081800A (ja) | 2005-09-14 | 2007-03-29 | Matsushita Electric Ind Co Ltd | ドハティ増幅器 |
JP4584293B2 (ja) * | 2007-08-31 | 2010-11-17 | 富士通株式会社 | 窒化物半導体装置、ドハティ増幅器、ドレイン電圧制御増幅器 |
-
2008
- 2008-01-15 JP JP2008006086A patent/JP4950083B2/ja not_active Expired - Fee Related
-
2009
- 2009-01-12 US US12/351,876 patent/US7843262B2/en active Active
- 2009-01-15 CN CN200910003472.1A patent/CN101510760B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7843262B2 (en) | 2010-11-30 |
JP2009171147A (ja) | 2009-07-30 |
CN101510760A (zh) | 2009-08-19 |
CN101510760B (zh) | 2014-03-26 |
US20090179703A1 (en) | 2009-07-16 |
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