JP4257346B2 - 電力増幅器 - Google Patents
電力増幅器 Download PDFInfo
- Publication number
- JP4257346B2 JP4257346B2 JP2006176651A JP2006176651A JP4257346B2 JP 4257346 B2 JP4257346 B2 JP 4257346B2 JP 2006176651 A JP2006176651 A JP 2006176651A JP 2006176651 A JP2006176651 A JP 2006176651A JP 4257346 B2 JP4257346 B2 JP 4257346B2
- Authority
- JP
- Japan
- Prior art keywords
- output
- amplifier
- power
- field effect
- class
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- H03F3/217—Class D power amplifiers; Switching amplifiers
- H03F3/2176—Class E amplifiers
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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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
-
- 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
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
- H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/366—Multiple MOSFETs are coupled in parallel
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/391—Indexing scheme relating to amplifiers the output circuit of an amplifying stage comprising an LC-network
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/20—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F2203/21—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F2203/211—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
- H03F2203/21178—Power transistors are made by coupling a plurality of single transistors in parallel
Description
15 直流電圧源
20 出力端子
30 スイッチ、N型MOSFET
31 インダクタ
32 キャパシタ
33 バンドパスフィルタ
34 負荷抵抗
40 振幅制御部
50 ドライバアンプ
100 基板
Claims (4)
- 並列に接続されそれぞれの一端が接地された複数の電界効果トランジスタと、
インダクタ、キャパシタ、およびバンドパスフィルタのうちの少なくとも1つを有し、一端が前記複数の電界効果トランジスタのそれぞれの他端に接続され、他端から増幅された出力信号を出力する増幅ユニットと、
アドレス信号をデコードすることにより、前記複数の電界トランジスタのうちの少なくとも1つの電界効果トランジスタを選択し、この選択された電界トランジスタのゲートをオンまたはオフさせる制御信号をクロック信号に同期して送り、前記増幅ユニットの出力の振幅を制御する振幅制御部と、
を備え、前記複数の電界効果トランジスタは、チャネル幅が互いに異なっていてかつ互いに非自然数倍のチャネル幅を有し、前記増幅ユニットの出力が、前記複数の電界効果トランジスタがオンとなっている数に比例するように、前記複数の電界効果トランジスタの各々が選択され、
前記複数の電界効果トランジスタは同一の基板上に形成され、最低出力からN(N≧2)番目に初めて選択される電界効果トランジスタと、最低出力時からN+1番目の出力時に初めて選択される電界効果トランジスタとが、互いに隣り合っていないように配置されることを特徴とする電力増幅器。 - 前記複数の電界効果トランジスタのそれぞれは、ゲートが複数のゲートフィンガーに分割されていることを特徴とする請求項1記載の電力増幅器。
- 前記増幅ユニットは、一端が直流電圧源に接続され他端が前記複数の電界効果トランジスタのそれぞれの他端に接続されたインダクタと、一端が前記インダクタの前記他端に接続され他端が接地されたキャパシタと、一端が前記キャパシタの前記一端に接続されたバンドパスフィルタとを備え、前記バンドパスフィルタの出力が前記増幅ユニットの出力であることを特徴とする請求項1または2記載の電力増幅器。
- 前記増幅ユニットはD級増幅器、E級増幅器、F級増幅器のいずれか1つであることを特徴とする請求項1乃至3のいずれかに記載の電力増幅器。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006176651A JP4257346B2 (ja) | 2006-06-27 | 2006-06-27 | 電力増幅器 |
US11/687,770 US7619470B2 (en) | 2006-06-27 | 2007-03-19 | Power amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006176651A JP4257346B2 (ja) | 2006-06-27 | 2006-06-27 | 電力増幅器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008010947A JP2008010947A (ja) | 2008-01-17 |
JP4257346B2 true JP4257346B2 (ja) | 2009-04-22 |
Family
ID=39068796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006176651A Expired - Fee Related JP4257346B2 (ja) | 2006-06-27 | 2006-06-27 | 電力増幅器 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7619470B2 (ja) |
JP (1) | JP4257346B2 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5438947B2 (ja) * | 2007-11-27 | 2014-03-12 | 株式会社東芝 | 半導体装置 |
JP5283943B2 (ja) | 2008-03-25 | 2013-09-04 | 株式会社東芝 | 半導体装置 |
US8811919B2 (en) * | 2009-09-04 | 2014-08-19 | Qualcomm Incorporated | System and method for generating a defined pulse |
JP5398841B2 (ja) | 2009-09-29 | 2014-01-29 | 株式会社東芝 | 電力増幅器 |
JP4948683B2 (ja) * | 2010-06-21 | 2012-06-06 | パナソニック株式会社 | 高周波増幅回路 |
US8432219B1 (en) * | 2010-10-07 | 2013-04-30 | Passif Semiconductor Corp. | Amplitude control system and method for communication systems |
US9270504B2 (en) * | 2014-07-28 | 2016-02-23 | Mitsubishi Electric Research Laboratories, Inc. | System and method for linearizing power amplifiers |
GB201701849D0 (en) * | 2017-02-03 | 2017-03-22 | Novelda As | Pulse generator |
CA3126394A1 (en) * | 2019-01-16 | 2020-07-23 | Rhythmlink International, Llc | Neurological monitoring cable for magnetic resonance environments |
Family Cites Families (36)
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US4164714A (en) * | 1977-09-26 | 1979-08-14 | Harris Corporation | Polyphase PDM amplifier |
US4580111A (en) | 1981-12-24 | 1986-04-01 | Harris Corporation | Amplitude modulation using digitally selected carrier amplifiers |
JPH04287105A (ja) | 1991-03-16 | 1992-10-12 | Fujitsu Ltd | 情報処理装置の電力供給装置 |
JP2679495B2 (ja) | 1991-12-17 | 1997-11-19 | 松下電器産業株式会社 | 半導体回路 |
JPH0774549A (ja) | 1993-08-31 | 1995-03-17 | Toyota Central Res & Dev Lab Inc | 高効率線形増幅器 |
JP2749255B2 (ja) | 1993-11-18 | 1998-05-13 | 日本無線株式会社 | 振幅変調方法及び回路 |
JPH08255034A (ja) | 1995-03-17 | 1996-10-01 | Hitachi Ltd | 低消費電力型データ処理装置 |
US5731603A (en) | 1995-08-24 | 1998-03-24 | Kabushiki Kaisha Toshiba | Lateral IGBT |
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JP3521750B2 (ja) | 1998-07-24 | 2004-04-19 | 株式会社村田製作所 | 半導体装置およびその半導体装置を用いた増幅装置 |
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FR2804257B1 (fr) | 2000-01-21 | 2005-02-25 | Harris Corp | Amplificateur de puissance rf et ses ameliorations |
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-
2006
- 2006-06-27 JP JP2006176651A patent/JP4257346B2/ja not_active Expired - Fee Related
-
2007
- 2007-03-19 US US11/687,770 patent/US7619470B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7619470B2 (en) | 2009-11-17 |
JP2008010947A (ja) | 2008-01-17 |
US20080061871A1 (en) | 2008-03-13 |
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