JP5635507B2 - 増幅装置 - Google Patents
増幅装置 Download PDFInfo
- Publication number
- JP5635507B2 JP5635507B2 JP2011522183A JP2011522183A JP5635507B2 JP 5635507 B2 JP5635507 B2 JP 5635507B2 JP 2011522183 A JP2011522183 A JP 2011522183A JP 2011522183 A JP2011522183 A JP 2011522183A JP 5635507 B2 JP5635507 B2 JP 5635507B2
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- JP
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- Prior art keywords
- power supply
- signal
- supply voltage
- voltage control
- unit
- 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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- 230000005236 sound signal Effects 0.000 claims description 49
- 230000003321 amplification Effects 0.000 claims description 20
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 description 20
- 238000010586 diagram Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000002238 attenuated effect Effects 0.000 description 5
- 230000003111 delayed effect Effects 0.000 description 5
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 239000000872 buffer Substances 0.000 description 4
- 230000001934 delay Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3205—Modifications of amplifiers to reduce non-linear distortion in field-effect transistor amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
- H03F3/185—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
-
- 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
- H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
-
- 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
- H03F2200/351—Pulse width modulation being used in an amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/504—Indexing scheme relating to amplifiers the supply voltage or current being continuously controlled by a controlling signal, e.g. the controlling signal of a transistor implemented as variable resistor in a supply path for, an IC-block showed amplifier
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Amplifiers (AREA)
Description
以下、本発明の実施の形態1における増幅装置について図面を参照しながら説明する。
以下、上述した電源電圧制御信号作成部114の詳細な処理内容について説明する。以下の説明において、入力音声信号としてデジタル信号を想定し、x、N、nを整数として扱い、xを時刻として扱う。また、入力されたデジタル信号が示す値を入力順に時刻xのデータf(x)とし、さらに、連続するN点のデータ長を1フレームとして、各フレームを入力順にn番目のフレームとして処理していくこととして説明する。また、以下の説明に対応したデジタル信号の波形図である図3、図5、図7及び図8については、便宜的にデジタル信号の信号値を結んだアナログ波形として図示する。
先ず、簡易包絡線作成部111が簡易包絡線を作成する処理動作について説明する。簡易包絡線作成部111は、以下の手順で入力音声信号f(x)から簡易包絡線g(x)を得る。ここで、g(x)は、時刻xにおける簡易包絡線の信号値である。
図6は、実施の形態1における先読み幅更新部113が行う処理のフローチャートである。また、図7は、実施の形態1における先読み幅更新部113への入力信号の一例を示す図である。図8は、実施の形態1における先読み幅更新部113への入力信号の他の例を示す図である。
2 オーディオ装置
3 スピーカー
4 直流電源
11 電源電圧制御部
12 電圧可変電源
13 信号遅延処理部
14 アンプ部
15 アッテネータ部
16 A/D変換部
111 簡易包絡線作成部
112 包絡線信号遅延処理部
113 先読み幅更新部
114 電源電圧制御信号作成部
141 PWM生成部
142 ゲートドライバ
143 ハーフブリッジ回路
143a ハイサイド高速スイッチング素子
143b ローサイド高速スイッチング素子
144 ローパスフィルタ
Claims (4)
- 自装置に入力された入力音声信号を増幅して音声出力する増幅装置であって、
前記入力音声信号を所定時間遅延させて出力する信号遅延処理部と、
前記信号遅延処理部から出力された信号を増幅するアンプ部と、
前記アンプ部に電源を供給する電圧可変電源と、
前記電圧可変電源に電源電圧制御信号を出力して前記電圧可変電源の出力電圧を制御する電源電圧制御部と、
一定時間を示す先読み信号を出力し、且つ前記一定時間を更新する更新部と、を備え、
前記電源電圧制御部は、前記入力音声信号から前記入力音声信号の包絡線を算出して、前記電源電圧制御信号が成す波形を前記包絡線に沿った波形となるように前記電源電圧制御信号を作成し、前記電源電圧制御信号を前記所定時間よりも前記一定時間前に前記電圧可変電源へ出力し、
前記更新部は、前記包絡線と前記電圧可変電源の出力電圧とに基づいて前記一定時間を更新する増幅装置。 - 前記電源電圧制御部は、前記アンプ部で増幅すべき音声信号に対して前記電源電圧制御信号が前もって立ち上がるように制御を行う請求項1に記載の増幅装置。
- 前記電源電圧制御部は、前記電源電圧制御信号の立下り時に、前記一定時間をゼロに設定する請求項2に記載の増幅装置。
- 前記電圧可変電源の出力電圧が、包絡線より大きい場合、前記一定時間を小さくし、前記電圧可変電源の出力電圧が、包絡線より小さい場合、前記一定時間を大きくすることを特徴とする請求項1に記載の増幅装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011522183A JP5635507B2 (ja) | 2010-01-07 | 2011-01-05 | 増幅装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010001695 | 2010-01-07 | ||
JP2010001695 | 2010-01-07 | ||
PCT/JP2011/000013 WO2011083758A1 (ja) | 2010-01-07 | 2011-01-05 | 増幅装置 |
JP2011522183A JP5635507B2 (ja) | 2010-01-07 | 2011-01-05 | 増幅装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2011083758A1 JPWO2011083758A1 (ja) | 2013-05-13 |
JP5635507B2 true JP5635507B2 (ja) | 2014-12-03 |
Family
ID=44305494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011522183A Expired - Fee Related JP5635507B2 (ja) | 2010-01-07 | 2011-01-05 | 増幅装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8686792B2 (ja) |
EP (1) | EP2432120B1 (ja) |
JP (1) | JP5635507B2 (ja) |
CN (1) | CN102598504B (ja) |
WO (1) | WO2011083758A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2613438B1 (en) * | 2010-08-30 | 2016-04-06 | Panasonic Intellectual Property Management Co., Ltd. | Amplifier |
KR101763410B1 (ko) * | 2010-12-21 | 2017-08-04 | 한국전자통신연구원 | 디지털 전치 왜곡 전력 증폭 장치 및 그 장치에서의 디지털 방식의 동기 조절 방법 |
US8841894B1 (en) | 2011-12-16 | 2014-09-23 | Cirrus Logic, Inc. | Pulse-width modulated (PWM) audio power amplifier with output transition slope control |
WO2013093989A1 (ja) * | 2011-12-19 | 2013-06-27 | 富士通株式会社 | 増幅回路 |
WO2013186863A1 (ja) * | 2012-06-12 | 2013-12-19 | 富士通株式会社 | 増幅回路 |
US9154095B2 (en) * | 2013-03-15 | 2015-10-06 | Bose Corporation | Boost-on-demand amplifier |
US9184705B2 (en) | 2013-03-15 | 2015-11-10 | Bose Corporation | Feedback mechanism for boost-on-demand amplifiers |
US9209762B1 (en) * | 2013-04-01 | 2015-12-08 | Cirrus Logic, Inc. | Switching power amplifier with rate-controlled power supply voltage transitions |
CN103607176B (zh) * | 2013-10-21 | 2017-05-24 | 梁秀红 | 音频功放供电电路控制方法及音频功放供电电路及音频功放电路 |
JP6252164B2 (ja) * | 2013-12-24 | 2017-12-27 | 株式会社デンソー | 車両用オーディオアンプ制御装置 |
US9543908B2 (en) | 2014-02-21 | 2017-01-10 | Bang & Olufsen A/S | Adaptive rail voltage regulation on power supplies |
WO2016015256A1 (zh) * | 2014-07-30 | 2016-02-04 | 华为技术有限公司 | 功率放大器的供电电压控制方法及电子设备 |
US10624158B2 (en) * | 2014-10-21 | 2020-04-14 | Ultraflex International Inc. | Radio frequency heating apparatus using direct-digital radio frequency power control and fine-tune power control |
US11051369B2 (en) | 2014-10-21 | 2021-06-29 | Ultraflex International, Inc. | Radio frequency heating apparatus using direct-digital radio frequency power control and fine-tune power control |
US9559642B2 (en) * | 2015-01-02 | 2017-01-31 | Logitech Europe, S.A. | Audio delivery system having an improved efficiency and extended operation time between recharges or battery replacements |
KR102429755B1 (ko) * | 2015-01-28 | 2022-08-05 | 한국전자통신연구원 | 포락선-추적 전력증폭기의 포락선 신호 지연 조정 장치 및 그 방법 |
US10250194B2 (en) | 2015-11-13 | 2019-04-02 | Analog Devices Global | Broadband envelope tracking |
US11750164B2 (en) * | 2020-11-17 | 2023-09-05 | Harman International Industries, Incorporated | Controlled rail-voltage decay for boost power supply output protection |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0353602A (ja) * | 1989-07-21 | 1991-03-07 | Hitachi Ltd | 増幅装置 |
JP2007508731A (ja) * | 2003-10-09 | 2007-04-05 | バング アンド オルフセン アイスパワー アクティーゼルスカブ | 電力変換システム |
JP2007511187A (ja) * | 2003-11-20 | 2007-04-26 | ノースロップ グルムマン コーポレイション | 可変供給電圧増幅器システム |
JP2007243927A (ja) * | 2006-01-27 | 2007-09-20 | Marvell World Trade Ltd | 可変パワー適応送信機 |
WO2009019459A1 (en) * | 2007-08-03 | 2009-02-12 | Wolfson Microelectronics Plc | Amplifier circuit |
JP2009152904A (ja) * | 2007-12-20 | 2009-07-09 | Fujitsu Ltd | 電力増幅装置 |
JP2009177640A (ja) * | 2008-01-25 | 2009-08-06 | Fujitsu Ltd | 電力増幅器 |
Family Cites Families (12)
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JPH05316012A (ja) * | 1992-05-07 | 1993-11-26 | Nec Corp | 出力電力制御回路 |
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GB2360410A (en) * | 2000-03-18 | 2001-09-19 | Univ Bristol | An amplifier in which the input signal is delayed to allow time for the power supply to adjust to a level which minimises power loss |
DE10140285A1 (de) * | 2001-08-16 | 2003-02-27 | Klein & Hummel Gmbh | Schaltungsanordnung zur Verstärkung eines Audiosignals |
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US7602155B2 (en) * | 2005-07-27 | 2009-10-13 | Artesyn Technologies, Inc. | Power supply providing ultrafast modulation of output voltage |
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WO2008024666A2 (en) * | 2006-08-21 | 2008-02-28 | Cirrus Logic, Inc. | Method and apparatus for controlling a selectable voltage audio power output stage |
-
2011
- 2011-01-05 WO PCT/JP2011/000013 patent/WO2011083758A1/ja active Application Filing
- 2011-01-05 JP JP2011522183A patent/JP5635507B2/ja not_active Expired - Fee Related
- 2011-01-05 US US13/381,213 patent/US8686792B2/en active Active
- 2011-01-05 CN CN201180002896.1A patent/CN102598504B/zh active Active
- 2011-01-05 EP EP11731756.0A patent/EP2432120B1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0353602A (ja) * | 1989-07-21 | 1991-03-07 | Hitachi Ltd | 増幅装置 |
JP2007508731A (ja) * | 2003-10-09 | 2007-04-05 | バング アンド オルフセン アイスパワー アクティーゼルスカブ | 電力変換システム |
JP2007511187A (ja) * | 2003-11-20 | 2007-04-26 | ノースロップ グルムマン コーポレイション | 可変供給電圧増幅器システム |
JP2007243927A (ja) * | 2006-01-27 | 2007-09-20 | Marvell World Trade Ltd | 可変パワー適応送信機 |
WO2009019459A1 (en) * | 2007-08-03 | 2009-02-12 | Wolfson Microelectronics Plc | Amplifier circuit |
JP2009152904A (ja) * | 2007-12-20 | 2009-07-09 | Fujitsu Ltd | 電力増幅装置 |
JP2009177640A (ja) * | 2008-01-25 | 2009-08-06 | Fujitsu Ltd | 電力増幅器 |
Also Published As
Publication number | Publication date |
---|---|
US20120262232A1 (en) | 2012-10-18 |
CN102598504A (zh) | 2012-07-18 |
CN102598504B (zh) | 2015-05-13 |
JPWO2011083758A1 (ja) | 2013-05-13 |
WO2011083758A1 (ja) | 2011-07-14 |
US8686792B2 (en) | 2014-04-01 |
EP2432120A1 (en) | 2012-03-21 |
EP2432120A4 (en) | 2014-01-22 |
EP2432120B1 (en) | 2017-12-06 |
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