DE3879627D1 - Huellkurvenverstaerker. - Google Patents
Huellkurvenverstaerker.Info
- Publication number
- DE3879627D1 DE3879627D1 DE8888904831T DE3879627T DE3879627D1 DE 3879627 D1 DE3879627 D1 DE 3879627D1 DE 8888904831 T DE8888904831 T DE 8888904831T DE 3879627 T DE3879627 T DE 3879627T DE 3879627 D1 DE3879627 D1 DE 3879627D1
- Authority
- DE
- Germany
- Prior art keywords
- amplifier
- shell curve
- curve
- shell
- curve amplifier
- 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
Links
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
- H03F1/0244—Stepped control
-
- 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
- H03F3/2178—Class D power amplifiers; Switching amplifiers using more than one switch or switching amplifier in parallel or in series
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/059,709 US4831334A (en) | 1987-06-08 | 1987-06-08 | Envelope amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3879627D1 true DE3879627D1 (de) | 1993-04-29 |
DE3879627T2 DE3879627T2 (de) | 1993-10-21 |
Family
ID=22024746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE88904831T Expired - Fee Related DE3879627T2 (de) | 1987-06-08 | 1988-05-06 | Hüllkurvenverstärker. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4831334A (de) |
EP (1) | EP0316405B1 (de) |
JP (1) | JPH0758871B2 (de) |
CA (1) | CA1286734C (de) |
DE (1) | DE3879627T2 (de) |
WO (1) | WO1988010025A1 (de) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5099203A (en) * | 1990-06-05 | 1992-03-24 | Continental Electronics Corporation | Power amplifier having multiple switched stages and method of operating same |
US5200707A (en) * | 1990-06-05 | 1993-04-06 | Continental Electronics Corporation | Amplifier with multiple switched stages and noise suppression |
CH681499A5 (de) * | 1990-10-30 | 1993-03-31 | Ascom Audiosys Ag | |
US5249201A (en) * | 1991-02-01 | 1993-09-28 | Mst, Inc. | Transmission of multiple carrier signals in a nonlinear system |
US5311143A (en) * | 1992-07-02 | 1994-05-10 | Motorola, Inc. | RF amplifier bias control method and apparatus |
US5847602A (en) * | 1997-03-03 | 1998-12-08 | Hewlett-Packard Company | Method and apparatus for linearizing an efficient class D/E power amplifier using delta modulation |
US5990735A (en) * | 1997-07-02 | 1999-11-23 | Motorola, Inc. | Method and apparatus for high efficiency power amplification |
US5886572A (en) * | 1997-07-25 | 1999-03-23 | Motorola, Inc. | Method and apparatus for reducing distortion in a power amplifier |
US5831475A (en) * | 1997-08-04 | 1998-11-03 | Motorola, Inc. | Method and apparatus for delay matching in a power amplifier |
US6049703A (en) * | 1997-11-28 | 2000-04-11 | Motorola, Inc. | Amplifier circuit and method for increasing linearity of the amplifier circuit |
US5929702A (en) * | 1997-11-28 | 1999-07-27 | Motorola, Inc. | Method and apparatus for high efficiency high dynamic range power amplification |
US5942938A (en) * | 1997-12-29 | 1999-08-24 | Motorola, Inc. | Method and apparatus for high efficiency power amplification |
US5886573A (en) * | 1998-03-06 | 1999-03-23 | Fujant, Inc. | Amplification using amplitude reconstruction of amplitude and/or angle modulated carrier |
US6377784B2 (en) * | 1999-02-09 | 2002-04-23 | Tropian, Inc. | High-efficiency modulation RF amplifier |
US6864668B1 (en) | 1999-02-09 | 2005-03-08 | Tropian, Inc. | High-efficiency amplifier output level and burst control |
KR20020059343A (ko) * | 1999-07-29 | 2002-07-12 | 추후제출 | 고효율 변조 rf 증폭기 |
US6157253A (en) * | 1999-09-03 | 2000-12-05 | Motorola, Inc. | High efficiency power amplifier circuit with wide dynamic backoff range |
FR2804257B1 (fr) * | 2000-01-21 | 2005-02-25 | Harris Corp | Amplificateur de puissance rf et ses ameliorations |
US6366177B1 (en) | 2000-02-02 | 2002-04-02 | Tropian Inc. | High-efficiency power modulators |
US6707857B1 (en) | 2000-07-14 | 2004-03-16 | Ericsson Inc. | Reference signal pre-distortion for transmitter with frequency synthesizer based phase encoding |
US6734724B1 (en) * | 2000-10-06 | 2004-05-11 | Tropian, Inc. | Power control and modulation of switched-mode power amplifiers with one or more stages |
US6486733B2 (en) * | 2000-12-27 | 2002-11-26 | Motorola, Inc. | Method and apparatus for high efficiency power amplification |
US6538515B2 (en) | 2001-01-19 | 2003-03-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Power amplifier and method of operating a power amplifier having multiple output-power modes |
US6593806B1 (en) * | 2001-08-10 | 2003-07-15 | Cirrus Logic, Inc. | Circuits and methods for compensating switched mode amplifiers |
AU2002367231A1 (en) * | 2001-12-24 | 2003-07-15 | Koninklijke Philips Electronics N.V. | Power amplifier |
US7116946B2 (en) * | 2002-10-28 | 2006-10-03 | Matsushita Electric Industrial Co., Ltd. | Transmitter |
GB2398648B (en) | 2003-02-19 | 2005-11-09 | Nujira Ltd | Power supply stage for an amplifier |
US7623896B2 (en) * | 2004-02-04 | 2009-11-24 | Sharp Kabushiki Kaisha | Wireless communication circuit and wireless communication apparatus using the same |
US6975172B2 (en) * | 2004-05-03 | 2005-12-13 | Peavey Electronics Corporation | Smart voltage rail reduction audio amplifier |
ITBO20050260A1 (it) * | 2005-04-20 | 2006-10-21 | Ocem Spa | Metodo per la modulazione di una tensione |
JP4868846B2 (ja) * | 2005-12-22 | 2012-02-01 | 富士通株式会社 | 電圧制御信号調整装置及び電圧制御信号調整方法 |
US7519336B2 (en) * | 2006-05-05 | 2009-04-14 | Nokia Corporation | Method and arrangement for optimizing efficiency of a power amplifier |
US7570931B2 (en) * | 2006-06-02 | 2009-08-04 | Crestcom, Inc. | RF transmitter with variably biased RF power amplifier and method therefor |
JP2008178226A (ja) * | 2007-01-18 | 2008-07-31 | Fujitsu Ltd | 電源装置および負荷装置への電源電圧の供給方法 |
US8064851B2 (en) * | 2008-03-06 | 2011-11-22 | Crestcom, Inc. | RF transmitter with bias-signal-induced distortion compensation and method therefor |
EP2234454B1 (de) * | 2009-03-24 | 2010-11-10 | Alcatel Lucent | Verfahren zur Datenübertragung mittels eines Ummantelungseliminierungs- und -wiederherstellungsverstärkers, Ummantelungseliminierungs- und -wiederherstellungsverstärker, Übertragungsvorrichtung, Empfangsvorrichtung und Kommunikationsnetzwerk dafür |
JP5336907B2 (ja) * | 2009-04-02 | 2013-11-06 | パナソニック株式会社 | 電源変調回路 |
US8278904B2 (en) * | 2009-07-23 | 2012-10-02 | Quantance, Inc. | High bandwidth power supply system with high efficiency and low distortion |
CN101662222B (zh) * | 2009-09-30 | 2012-01-04 | 华为技术有限公司 | 电源跟踪方法和装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3319175A (en) * | 1964-07-27 | 1967-05-09 | Hugh L Dryden | Electronic amplifier with power supply switching |
US4205241A (en) * | 1979-03-13 | 1980-05-27 | Fisher Charles B | Quantized modulation systems |
GB2064901B (en) * | 1979-11-30 | 1984-11-07 | Harris Corp | Digital high power amplifier |
JPS572107A (en) * | 1980-06-04 | 1982-01-07 | Pioneer Electronic Corp | Power supply circuit of electric power amplifier |
JPS5732104A (en) * | 1980-08-06 | 1982-02-20 | Hitachi Ltd | Power-voltage-controlled type amplifier |
US4580111A (en) * | 1981-12-24 | 1986-04-01 | Harris Corporation | Amplitude modulation using digitally selected carrier amplifiers |
EP0124765B1 (de) * | 1983-05-10 | 1987-09-02 | BBC Brown Boveri AG | Schaltverstärker zur digitalen Leistungsverstärkung |
US4628438A (en) * | 1983-12-16 | 1986-12-09 | Control Concepts Corporation | Power converter apparatus and method employing plural branches |
FR2557399B1 (fr) * | 1983-12-23 | 1990-05-04 | Thomson Csf | Amplificateur de puissance lineaire |
-
1987
- 1987-06-08 US US07/059,709 patent/US4831334A/en not_active Expired - Lifetime
-
1988
- 1988-05-06 JP JP63504387A patent/JPH0758871B2/ja not_active Expired - Lifetime
- 1988-05-06 WO PCT/US1988/001463 patent/WO1988010025A1/en active IP Right Grant
- 1988-05-06 EP EP88904831A patent/EP0316405B1/de not_active Expired - Lifetime
- 1988-05-06 DE DE88904831T patent/DE3879627T2/de not_active Expired - Fee Related
- 1988-06-07 CA CA000568797A patent/CA1286734C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO1988010025A1 (en) | 1988-12-15 |
CA1286734C (en) | 1991-07-23 |
EP0316405B1 (de) | 1993-03-24 |
US4831334A (en) | 1989-05-16 |
JPH0758871B2 (ja) | 1995-06-21 |
EP0316405A1 (de) | 1989-05-24 |
JPH01503587A (ja) | 1989-11-30 |
DE3879627T2 (de) | 1993-10-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: HUGHES ELECTRONICS CORP., EL SEGUNDO, CALIF., US |
|
8339 | Ceased/non-payment of the annual fee |