DE69409939T2 - Leistungsverstärker und Radiosender - Google Patents
Leistungsverstärker und RadiosenderInfo
- Publication number
- DE69409939T2 DE69409939T2 DE69409939T DE69409939T DE69409939T2 DE 69409939 T2 DE69409939 T2 DE 69409939T2 DE 69409939 T DE69409939 T DE 69409939T DE 69409939 T DE69409939 T DE 69409939T DE 69409939 T2 DE69409939 T2 DE 69409939T2
- Authority
- DE
- Germany
- Prior art keywords
- loop
- amplifier
- closing
- control loop
- gain
- 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 - Lifetime
Links
- 230000010363 phase shift Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
- H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
Landscapes
- Amplifiers (AREA)
- Transmitters (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9401704A GB2286302B (en) | 1994-01-29 | 1994-01-29 | Power amplifier and radio transmitter |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69409939D1 DE69409939D1 (de) | 1998-06-04 |
DE69409939T2 true DE69409939T2 (de) | 1998-10-08 |
Family
ID=10749525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69409939T Expired - Lifetime DE69409939T2 (de) | 1994-01-29 | 1994-12-22 | Leistungsverstärker und Radiosender |
Country Status (8)
Country | Link |
---|---|
US (1) | US5467055A (de) |
EP (1) | EP0665641B1 (de) |
JP (1) | JP3223744B2 (de) |
CN (1) | CN1077745C (de) |
AT (1) | ATE165696T1 (de) |
DE (1) | DE69409939T2 (de) |
ES (1) | ES2115147T3 (de) |
GB (1) | GB2286302B (de) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2287595B (en) * | 1994-03-09 | 1997-03-05 | Motorola Ltd | Method for amplitude training in a linear power amplifier |
US5758269A (en) * | 1995-03-30 | 1998-05-26 | Lucent Technologies Inc. | High-efficient configurable power amplifier for use in a portable unit |
US5689815A (en) * | 1995-05-04 | 1997-11-18 | Oki Telecom, Inc. | Saturation prevention system for radio telephone with open and closed loop power control systems |
JPH09270723A (ja) | 1996-03-29 | 1997-10-14 | Alps Electric Co Ltd | 携帯電話機の受信回路用ic |
US6236863B1 (en) | 1997-03-31 | 2001-05-22 | Oki Telecom, Inc. | Comprehensive transmitter power control system for radio telephones |
US6230031B1 (en) | 1997-03-31 | 2001-05-08 | Oki Telecom, Inc. | Power amplifying circuitry for wireless radio transceivers |
US5913154A (en) * | 1997-04-18 | 1999-06-15 | Ericsson, Inc. | VSWR control technique for terminal products with linear modulation |
US6049700A (en) * | 1997-04-30 | 2000-04-11 | Lucent Technologies Inc. | Automatic volume adjustment in a wireless handset |
US6185431B1 (en) | 1997-06-18 | 2001-02-06 | Oki Telecom, Inc. | Mobile station closed loop output power stability system for weak signal conditions |
GB9715278D0 (en) | 1997-07-18 | 1997-09-24 | Cambridge Consultants | Signal processing system |
US6141541A (en) * | 1997-12-31 | 2000-10-31 | Motorola, Inc. | Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals |
US6396341B1 (en) | 2000-12-29 | 2002-05-28 | Ericsson Inc. | Class E Doherty amplifier topology for high efficiency signal transmitters |
US6300830B1 (en) | 2000-12-29 | 2001-10-09 | Ericsson Inc | Multiplexed input envelope restoration scheme for linear high-efficiency power amplification |
US6522194B1 (en) | 2000-12-29 | 2003-02-18 | Ericsson Inc. | Envelope restoration scheme for linear high-efficiency power amplification |
US6472934B1 (en) | 2000-12-29 | 2002-10-29 | Ericsson Inc. | Triple class E Doherty amplifier topology for high efficiency signal transmitters |
KR100403814B1 (ko) * | 2001-08-13 | 2003-10-30 | 삼성전자주식회사 | 멀티칩 모듈을 이용하여 디.씨 옵셋을 감소시킨 다이렉트컨버젼 수신기 |
US8107901B2 (en) * | 2001-08-20 | 2012-01-31 | Motorola Solutions, Inc. | Feedback loop with adjustable bandwidth |
GB0212740D0 (en) * | 2002-05-31 | 2002-07-10 | Hitachi Ltd | Transmitter and wireless communication apparatus using the transmitter |
US7639015B2 (en) | 2003-07-18 | 2009-12-29 | Mks Instruments, Inc. | Methods and systems for stabilizing an amplifier |
US8461842B2 (en) | 2003-07-18 | 2013-06-11 | Mks Instruments, Inc. | Methods and systems for stabilizing an amplifier |
WO2006022650A1 (en) * | 2004-07-28 | 2006-03-02 | Applied Science & Technology, Inc. | Methods and systems for stabilizing an amplifier |
CN101136616B (zh) * | 2006-08-30 | 2010-12-01 | 凌浩科技股份有限公司 | 西格玛-德尔塔型功率放大器及其调变方法 |
US7864882B2 (en) | 2006-12-30 | 2011-01-04 | Motorola Mobility, Inc. | Method and apparatus for generating constant envelope modulation using a quadrature transmitter |
US8422968B2 (en) * | 2009-06-03 | 2013-04-16 | Apple Inc. | Wireless electronic device with open-loop and closed-loop output power control |
US8670730B2 (en) * | 2011-08-24 | 2014-03-11 | Spectralux Corporation | Power efficient radio frequency transmitter |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4238855A (en) * | 1979-09-19 | 1980-12-09 | Rca Corporation | Parallel operation of multiple TV transmitters |
JP2556888B2 (ja) * | 1987-12-24 | 1996-11-27 | 日立金属株式会社 | 電気抵抗率バラツキの少ないセラミックス導電材料 |
JPH0466826U (de) * | 1990-10-16 | 1992-06-12 | ||
US5134718A (en) * | 1990-10-31 | 1992-07-28 | Motorola, Inc. | Fast phase shift adjusting method and device for linear transmitter |
US5066923A (en) * | 1990-10-31 | 1991-11-19 | Motorola, Inc. | Linear transmitter training method and apparatus |
JP2826003B2 (ja) * | 1991-11-29 | 1998-11-18 | 松下電器産業株式会社 | 送信出力制御回路 |
US5423082A (en) * | 1993-06-24 | 1995-06-06 | Motorola, Inc. | Method for a transmitter to compensate for varying loading without an isolator |
-
1994
- 1994-01-29 GB GB9401704A patent/GB2286302B/en not_active Expired - Fee Related
- 1994-12-22 AT AT94120389T patent/ATE165696T1/de not_active IP Right Cessation
- 1994-12-22 DE DE69409939T patent/DE69409939T2/de not_active Expired - Lifetime
- 1994-12-22 ES ES94120389T patent/ES2115147T3/es not_active Expired - Lifetime
- 1994-12-22 EP EP94120389A patent/EP0665641B1/de not_active Expired - Lifetime
-
1995
- 1995-01-06 US US08/369,243 patent/US5467055A/en not_active Expired - Fee Related
- 1995-01-27 JP JP03026795A patent/JP3223744B2/ja not_active Expired - Fee Related
- 1995-01-28 CN CN95101486A patent/CN1077745C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0665641A3 (de) | 1996-02-14 |
EP0665641B1 (de) | 1998-04-29 |
CN1124423A (zh) | 1996-06-12 |
GB2286302A (en) | 1995-08-09 |
US5467055A (en) | 1995-11-14 |
JP3223744B2 (ja) | 2001-10-29 |
JPH07303016A (ja) | 1995-11-14 |
ATE165696T1 (de) | 1998-05-15 |
ES2115147T3 (es) | 1998-06-16 |
GB2286302B (en) | 1998-12-16 |
GB9401704D0 (en) | 1994-03-23 |
CN1077745C (zh) | 2002-01-09 |
DE69409939D1 (de) | 1998-06-04 |
EP0665641A2 (de) | 1995-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69409939T2 (de) | Leistungsverstärker und Radiosender | |
CA2157255A1 (en) | Feed-forward amplifier with expanded linearity | |
DK0584312T3 (da) | Effektforstærker med linearisering | |
US20070063774A1 (en) | Method and apparatus for controlling the output power of a power amplifier | |
CA2136749A1 (en) | Power Amplifier Bias Control Circuit and Method | |
NO931949D0 (no) | Automatisk forsterkningsregulator med stort dynamisk reguleringsomraade | |
WO2003090343A3 (en) | Power amplifier | |
MX9504610A (es) | Metodo y aparato para aumentar la eficiencia del amplificador. | |
CA2050878A1 (en) | Power amplifier with quiescent current control | |
WO2002047252A3 (en) | Self-boosting circuit for a power amplifier | |
CA2154584A1 (en) | An amplifier for use in a radiotelephone | |
WO2004023648A3 (en) | Amplifier power control circuit | |
DE69907837D1 (de) | Oszillatoreinrichtung mit Quadraturausgängen | |
CA2293241A1 (en) | Adaptive biasing in a power amplifier | |
KR920015244A (ko) | 자동차량 추적 장치의 위치도그 회로 | |
KR910010834A (ko) | 증폭회로 | |
CA2088750A1 (en) | Linearized output control of a nonlinear amplifier | |
EP0251530A3 (de) | Pegelregelungskreise | |
DE69200132D1 (de) | Breitbandverstärkerstufe mit automatischer Verstärkungsregelung und Offsetregelung. | |
ATE172587T1 (de) | Gegentaktendstufe mit einer einstellung des querstroms der gegentaktendstufe | |
KR20070061211A (ko) | 씨모스형 가변이득 증폭 장치 | |
JPH04306904A (ja) | 増幅装置 | |
DK0504460T3 (da) | Høreapparat med et i koblingsdrift arbejdende udgangstrin | |
JPS6481509A (en) | Distortion generating circuit | |
JPS6460011A (en) | High frequency transistor amplifier |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Free format text: SCHUMACHER & WILLSAU, PATENTANWALTSSOZIETAET, 80335 MUENCHEN |
|
R082 | Change of representative |
Ref document number: 665641 Country of ref document: EP Representative=s name: SCHUMACHER & WILLSAU PATENTANWALTSGESELLSCHAFT MBH |