DK0870361T3 - Effektiv effektforstærker med parallelle trin - Google Patents

Effektiv effektforstærker med parallelle trin

Info

Publication number
DK0870361T3
DK0870361T3 DK96944497T DK96944497T DK0870361T3 DK 0870361 T3 DK0870361 T3 DK 0870361T3 DK 96944497 T DK96944497 T DK 96944497T DK 96944497 T DK96944497 T DK 96944497T DK 0870361 T3 DK0870361 T3 DK 0870361T3
Authority
DK
Denmark
Prior art keywords
power amplifier
efficient power
parallel steps
parallel
steps
Prior art date
Application number
DK96944497T
Other languages
Danish (da)
English (en)
Inventor
Richard K Kornfeld
Charles E Wheatley Iii
Richard J Camarillo
Katherine W White
Original Assignee
Qualcomm Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of DK0870361T3 publication Critical patent/DK0870361T3/da

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/60Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0277Selecting one or more amplifiers from a plurality of amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0288Modifications 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
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/60Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
    • H03F3/602Combinations of several amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers
    • H03G3/20Automatic control
    • H03G3/30Automatic control in amplifiers having semiconductor devices
    • H03G3/3036Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02Transmitters
    • H04B1/04Circuits
    • H04B1/0483Transmitters with multiple parallel paths
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/294Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2203/00Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/72Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • H03F2203/7236Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal the gated amplifier being switched on or off by putting into parallel or not, by choosing between amplifiers by (a ) switch(es)
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02Transmitters
    • H04B1/04Circuits
    • H04B2001/0408Circuits with power amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Microwave Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
DK96944497T 1995-12-27 1996-12-26 Effektiv effektforstærker med parallelle trin DK0870361T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/579,169 US5974041A (en) 1995-12-27 1995-12-27 Efficient parallel-stage power amplifier
PCT/US1996/020313 WO1997024800A1 (en) 1995-12-27 1996-12-26 Efficient parallel-stage power amplifier

Publications (1)

Publication Number Publication Date
DK0870361T3 true DK0870361T3 (da) 2003-06-23

Family

ID=24315849

Family Applications (1)

Application Number Title Priority Date Filing Date
DK96944497T DK0870361T3 (da) 1995-12-27 1996-12-26 Effektiv effektforstærker med parallelle trin

Country Status (20)

Country Link
US (1) US5974041A (ru)
EP (1) EP0870361B1 (ru)
JP (1) JP3942637B2 (ru)
KR (1) KR100430323B1 (ru)
CN (1) CN1079612C (ru)
AR (1) AR005313A1 (ru)
AT (1) ATE237887T1 (ru)
AU (1) AU724644B2 (ru)
BR (1) BR9612335A (ru)
DE (1) DE69627529T2 (ru)
DK (1) DK0870361T3 (ru)
ES (1) ES2198506T3 (ru)
HK (1) HK1016761A1 (ru)
IL (2) IL125122A (ru)
MY (1) MY124544A (ru)
PT (1) PT870361E (ru)
RU (1) RU2175809C2 (ru)
TW (1) TW342553B (ru)
WO (1) WO1997024800A1 (ru)
ZA (1) ZA9610942B (ru)

Families Citing this family (115)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6236863B1 (en) 1997-03-31 2001-05-22 Oki Telecom, Inc. Comprehensive transmitter power control system for radio telephones
US6463269B2 (en) * 1997-03-31 2002-10-08 Bellsouth Corporation Power amplification system with intelligent control of amplifier modules
US5805006A (en) * 1997-04-28 1998-09-08 Marvell Technology Group, Ltd. Controllable integrator
US6185431B1 (en) 1997-06-18 2001-02-06 Oki Telecom, Inc. Mobile station closed loop output power stability system for weak signal conditions
US5886575A (en) * 1997-09-30 1999-03-23 Motorola, Inc. Apparatus and method for amplifying a signal
JP3795212B2 (ja) * 1998-01-13 2006-07-12 三菱電機株式会社 光ファイバアンプ用警報監視回路
US7254122B2 (en) * 1998-07-29 2007-08-07 Sk Telecom Co., Ltd. Apparatus and method for generating pilot beacon signal in base stations of CDMA system
US6128478A (en) * 1998-07-31 2000-10-03 Motorola, Inc. Apparatus and method for amplifying a radio frequency signal
US6028485A (en) * 1998-08-03 2000-02-22 Motorola, Inc. Power amplification apparatus and method therefor
WO2000018005A1 (en) * 1998-09-22 2000-03-30 Qualcomm Incorporated High efficiency switched gain power amplifier
JP3317259B2 (ja) * 1998-12-17 2002-08-26 日本電気株式会社 ベースバンド信号多重回路とその送信レベル制御方法
US6615028B1 (en) * 1998-12-29 2003-09-02 Skyworks Solutions, Inc. System and method for selecting amplifiers in a communications device
US6122492A (en) * 1999-02-08 2000-09-19 Motorola, Inc. Adjustable radio frequency power amplifier and transmitter
EP1043833A1 (en) * 1999-04-07 2000-10-11 Lucent Technologies Inc. RF power control loop with variable loop filter
EP1054507A3 (en) * 1999-05-19 2001-07-04 Nokia Mobile Phones Ltd. Mobile station employing single ended use of a differential power amplifier for reduced output power
US6825719B1 (en) 2000-05-26 2004-11-30 Intel Corporation RF power amplifier and methods for improving the efficiency thereof
SE520760C2 (sv) * 2000-06-06 2003-08-19 Ericsson Telefon Ab L M Doherty-förstärkare av flerstegstyp
US7911993B2 (en) 2000-07-19 2011-03-22 Ipr Licensing, Inc. Method and apparatus for allowing soft handoff of a CDMA reverse link utilizing an orthogonal channel structure
US8537656B2 (en) 2000-07-19 2013-09-17 Ipr Licensing, Inc. Method for compensating for multi-path of a CDMA reverse link utilizing an orthogonal channel structure
US6580899B1 (en) * 2000-09-07 2003-06-17 Nortel Networks Limited Adaptive forward power management algorithm for traffic hotspots
US6392488B1 (en) 2000-09-12 2002-05-21 Silicon Laboratories, Inc. Dual oxide gate device and method for providing the same
US6448847B1 (en) 2000-09-12 2002-09-10 Silicon Laboratories, Inc. Apparatus and method for providing differential-to-single ended conversion and impedance transformation
US6362606B1 (en) 2000-09-12 2002-03-26 Silicon Laboratories, Inc Method and apparatus for regulating a voltage
US6462620B1 (en) 2000-09-12 2002-10-08 Silicon Laboratories, Inc. RF power amplifier circuitry and method for amplifying signals
US6549071B1 (en) 2000-09-12 2003-04-15 Silicon Laboratories, Inc. Power amplifier circuitry and method using an inductance coupled to power amplifier switching devices
US6917245B2 (en) 2000-09-12 2005-07-12 Silicon Laboratories, Inc. Absolute power detector
JP4597341B2 (ja) * 2000-09-28 2010-12-15 旭化成エレクトロニクス株式会社 gm−Cフィルタ
KR20020056740A (ko) * 2000-12-29 2002-07-10 송재인 절전형 전력증폭장치
US6587511B2 (en) 2001-01-26 2003-07-01 Intel Corporation Radio frequency transmitter and methods thereof
US6744312B2 (en) * 2001-03-06 2004-06-01 Andrew Corporation Adaptive power amplifier system
KR20030005783A (ko) * 2001-07-10 2003-01-23 테크노전자산업 주식회사 이동 단말기용 고효율 전력증폭기
US6917581B2 (en) * 2001-07-17 2005-07-12 Ipr Licensing, Inc. Use of orthogonal or near orthogonal codes in reverse link
US6828859B2 (en) * 2001-08-17 2004-12-07 Silicon Laboratories, Inc. Method and apparatus for protecting devices in an RF power amplifier
FI20011866A0 (fi) 2001-09-21 2001-09-21 Nokia Corp Monituloinen vahvistin
US6600369B2 (en) 2001-12-07 2003-07-29 Motorola, Inc. Wideband linear amplifier with predistortion error correction
US6594501B2 (en) * 2001-12-14 2003-07-15 Qualcomm Incorporated Systems and techniques for channel gain computations
US20030125065A1 (en) * 2001-12-27 2003-07-03 Ilan Barak Method and apparatus for generating an output signal
US20030123566A1 (en) * 2001-12-27 2003-07-03 Jaime Hasson Transmitter having a sigma-delta modulator with a non-uniform polar quantizer and methods thereof
JP4686487B2 (ja) * 2002-05-31 2011-05-25 株式会社東芝 可変インダクタを含む増幅器及びこの増幅器を備えた無線端末
US7039377B2 (en) * 2002-06-14 2006-05-02 Skyworks Solutions, Inc. Switchable gain amplifier
US7254195B2 (en) * 2003-08-25 2007-08-07 M/A-Com, Inc. Apparatus, methods and articles of manufacture for dynamic differential delay correction
US7151913B2 (en) * 2003-06-30 2006-12-19 M/A-Com, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US7751496B2 (en) * 2003-06-25 2010-07-06 Pine Valley Investments, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US7221915B2 (en) * 2003-06-25 2007-05-22 M/A-Com, Inc. Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture
US6894565B1 (en) 2002-12-03 2005-05-17 Silicon Laboratories, Inc. Fast settling power amplifier regulator
KR100893052B1 (ko) * 2002-12-27 2009-04-15 주식회사 팬택앤큐리텔 선택적 스마트 전력 증폭기 모듈
US6816008B2 (en) * 2002-12-31 2004-11-09 Alion Science And Technology Corporation Quasi-linear multi-state digital modulation through non-linear amplifier arrays
US6897730B2 (en) * 2003-03-04 2005-05-24 Silicon Laboratories Inc. Method and apparatus for controlling the output power of a power amplifier
US7444124B1 (en) 2003-05-14 2008-10-28 Marvell International Ltd. Adjustable segmented power amplifier
US7171159B2 (en) * 2003-06-24 2007-01-30 Northrop Grumman Corporation Transmission power control in a satellite communication system
US7336753B2 (en) * 2003-06-26 2008-02-26 Marvell International Ltd. Transmitter
KR100774385B1 (ko) * 2003-08-07 2007-11-08 가부시키가이샤 엔티티 도코모 전력 증폭기
US7119621B2 (en) * 2003-08-07 2006-10-10 Ntt Docomo, Inc. Power amplifier
WO2005015732A2 (en) * 2003-08-07 2005-02-17 Nokia Corporation, Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers
US7091778B2 (en) * 2003-09-19 2006-08-15 M/A-Com, Inc. Adaptive wideband digital amplifier for linearly modulated signal amplification and transmission
US7912145B2 (en) * 2003-12-15 2011-03-22 Marvell World Trade Ltd. Filter for a modulator and methods thereof
US7023292B2 (en) * 2003-12-17 2006-04-04 Telefonaktiebolaget L.M. Dericsson Polar modulation using amplitude modulated quadrature signals
US7356315B2 (en) * 2003-12-17 2008-04-08 Intel Corporation Outphasing modulators and methods of outphasing modulation
GB2412515B (en) * 2004-03-13 2007-08-08 Filtronic Plc A doherty amplifier
US7081794B2 (en) * 2004-06-04 2006-07-25 Andrew Corporation Paralleling digital-input amplifiers
US7161423B2 (en) * 2004-06-30 2007-01-09 Silicon Laboratories Inc. Parallel power amplifier and associated methods
US20060030275A1 (en) * 2004-08-05 2006-02-09 U.S. Monolithics, L.L.C. High power parallel block-up converter
US7190290B2 (en) * 2004-08-24 2007-03-13 M/A-Com, Eurotec B.V. Method and apparatus for addressing receive band noise problems associated with the use of a digital power amplifier
US7355470B2 (en) 2006-04-24 2008-04-08 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US7327803B2 (en) 2004-10-22 2008-02-05 Parkervision, Inc. Systems and methods for vector power amplification
JP2006222828A (ja) * 2005-02-14 2006-08-24 Hitachi Kokusai Electric Inc 増幅装置
US7292103B2 (en) * 2005-04-14 2007-11-06 Avago Technologies Wireless Ip (Singapore) Pte Ltd Amplifier system having compensated amplification variation
US7345534B2 (en) * 2005-05-31 2008-03-18 M/A-Com Eurotec Bv Efficient power amplification system
DE102005034032A1 (de) * 2005-07-21 2007-02-01 Selex Sistemi Intergrati Gmbh Mehrkanaliger Hochfrequenz-Empfänger
US7392021B2 (en) * 2005-08-03 2008-06-24 M/A-Com, Inc. Apparatus, system, and method for measuring power delivered to a load
US20070087770A1 (en) * 2005-10-14 2007-04-19 Hong Gan Methods and apparatuses for transmission power control in a wireless communication system
US9106316B2 (en) 2005-10-24 2015-08-11 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification
US8013675B2 (en) 2007-06-19 2011-09-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
WO2007094241A1 (ja) * 2006-02-15 2007-08-23 Matsushita Electric Industrial Co., Ltd. 送信回路
US7486134B2 (en) * 2006-03-09 2009-02-03 Skyworks Solutions, Inc. High efficiency load insensitive power amplifier
US7479827B2 (en) * 2006-03-21 2009-01-20 Fairchild Semiconductor Corporation Multi-mode power amplifier with high efficiency under backoff operation
ATE473549T1 (de) * 2006-04-10 2010-07-15 Ericsson Telefon Ab L M Verfahren zum kompensieren von signalverzerrungen in zusammengesetzten verstärkern
GB2437335B (en) * 2006-04-21 2008-06-04 Motorola Inc RF Transmitter and method of operation
US8031804B2 (en) 2006-04-24 2011-10-04 Parkervision, Inc. Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
US7937106B2 (en) 2006-04-24 2011-05-03 ParkerVision, Inc, Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
US8315336B2 (en) 2007-05-18 2012-11-20 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including a switching stage embodiment
GB0708721D0 (en) * 2007-05-04 2007-06-13 Astrium Ltd Tuning multiport amplifiers
WO2009005768A1 (en) 2007-06-28 2009-01-08 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
US20090027112A1 (en) * 2007-07-26 2009-01-29 Chin Li Controllable precision transconductance
US7671699B2 (en) * 2007-08-14 2010-03-02 Pine Valley Investments, Inc. Coupler
FI20075586A0 (fi) * 2007-08-24 2007-08-24 Nokia Corp Radiolähettimen signaalivahvistinrakenne
JP4970552B2 (ja) * 2007-12-28 2012-07-11 シャープ株式会社 補助容量配線駆動回路および表示装置
EP2226938A4 (en) * 2007-12-28 2011-07-20 Sharp Kk SEMICONDUCTOR DEVICE AND DISPLAY DEVICE
JP4981928B2 (ja) * 2007-12-28 2012-07-25 シャープ株式会社 表示駆動回路及び表示装置
EP2224594B1 (en) * 2007-12-28 2015-02-25 Sharp Kabushiki Kaisha Semiconductor device and display device
US8044759B2 (en) * 2008-01-08 2011-10-25 Samsung Electro-Mechanics Overlapping compact multiple transformers
ATE508530T1 (de) * 2008-09-24 2011-05-15 Alcatel Lucent Kombinierter mehrpfad-leistungsverstärker mit hohem wirkungsgrad
US8971830B2 (en) * 2009-05-12 2015-03-03 Qualcomm Incorporated Multi-mode multi-band power amplifier module
US8432237B2 (en) * 2009-05-21 2013-04-30 Qualcomm, Incorporated Output circuit with integrated impedance matching, power combining and filtering for power amplifiers and other circuits
US8536950B2 (en) 2009-08-03 2013-09-17 Qualcomm Incorporated Multi-stage impedance matching
US8102205B2 (en) 2009-08-04 2012-01-24 Qualcomm, Incorporated Amplifier module with multiple operating modes
KR101087629B1 (ko) * 2009-12-30 2011-11-30 광주과학기술원 다중 대역 전력증폭기
CN102142814B (zh) * 2010-02-01 2014-11-26 富士通株式会社 功放相关装置、功率放大器预失真系统以及建模方法
US8125276B2 (en) * 2010-03-12 2012-02-28 Samsung Electro-Mechanics Sharing of inductor interstage matching in parallel amplification system for wireless communication systems
KR20140026458A (ko) 2011-04-08 2014-03-05 파커비전, 인크. Rf 전력 송신, 변조 및 증폭 시스템들 및 방법들
KR20140034895A (ko) 2011-06-02 2014-03-20 파커비전, 인크. 안테나 제어
EP2582043A1 (en) * 2011-10-10 2013-04-17 Astrium Limited Control system for a power amplifier
US9066305B2 (en) * 2011-12-06 2015-06-23 Htc Corporation Mobile communication device capable of controlling ouput power and method thereof
RU2506697C1 (ru) * 2012-10-24 2014-02-10 Закрытое Акционерное Общество "Диаконт" Способ повышения точности измерения аналогового сигнала, устройство для измерения аналогового сигнала
CN106415435B (zh) 2013-09-17 2020-08-11 帕克维辛股份有限公司 用于呈现信息承载时间函数的方法、装置和系统
US9413406B2 (en) * 2014-03-14 2016-08-09 Qualcomm Incorporated Single input multiple-output power amplifier
US20150333716A1 (en) * 2014-05-13 2015-11-19 Mediatek Inc. Method and apparatus for performing signal amplifying with aid of switching control
JP2016025453A (ja) * 2014-07-18 2016-02-08 セイコーエプソン株式会社 回路装置、電子機器及び移動体
FR3030902B1 (fr) * 2014-12-17 2018-04-13 Continental Automotive France Dispositif portable de communication radiofrequence a gain reglable et procede de reglage de gain associe
US9806676B2 (en) * 2015-07-28 2017-10-31 Skyworks Solutions, Inc. Power amplification system with programmable load line
US11201595B2 (en) * 2015-11-24 2021-12-14 Skyworks Solutions, Inc. Cascode power amplifier with switchable output matching network
US10418948B2 (en) * 2017-05-19 2019-09-17 Corning Optical Communications LLC Optimizing power efficiency of a power amplifier circuit to reduce power consumption in a remote unit in a wireless distribution system (WDS)
JP2020123761A (ja) * 2019-01-29 2020-08-13 株式会社村田製作所 電力増幅器
TWI781838B (zh) * 2021-12-01 2022-10-21 嘉雨思科技股份有限公司 訊號回授增益電路

Family Cites Families (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325738A (en) * 1964-02-17 1967-06-13 Avco Corp Signal to noise ratio controlled squelch circuit
US3469195A (en) * 1965-11-29 1969-09-23 Rca Corp Detector and agc circuit stabilization responsive to power supply changes
US3514710A (en) * 1968-11-04 1970-05-26 Avco Corp Signal amplifier with direct current energy supply and dynamic range controlled in accordance with composite input signal level
US3665507A (en) * 1971-01-04 1972-05-23 Gen Electric Signal processor for reception of amplitude or frequency modulated signals
JPS5549450B2 (ru) * 1973-01-12 1980-12-12
US4263560A (en) * 1974-06-06 1981-04-21 The United States Of America As Represented By The Secretary Of The Navy Log-exponential AGC circuit
GB1546672A (en) * 1975-07-03 1979-05-31 Sony Corp Signal compression and expansion circuits
US4041396A (en) * 1975-12-22 1977-08-09 Motorola, Inc. Environmentally sensitive transmit power maximizing circuitry and method
DE2803204C2 (de) * 1978-01-25 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Verstärker für elektrische Signale
US4158180A (en) * 1978-04-13 1979-06-12 General Electric Company Temperature control circuit
US4207538A (en) * 1978-08-29 1980-06-10 Rca Corporation Temperature compensation circuit
US4320350A (en) * 1979-11-29 1982-03-16 Rockwell International Corporation Sliding power supply for RF power amplifier
US4380711A (en) * 1980-12-15 1983-04-19 Rockwell International Corporation Linearization circuit
FR2512292B1 (fr) * 1981-08-25 1986-11-21 Lmt Radio Professionelle Amplificateur hyperfrequence a transistors a effet de champ, notamment pour radar doppler
US4426625A (en) * 1981-08-27 1984-01-17 Rca Corporation Circuit for linearly gain controlling a differential amplifier
US4439744A (en) * 1981-12-24 1984-03-27 Rca Corporation Variable power amplifier
DE3204217A1 (de) * 1982-02-08 1983-08-18 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltung zur elektronischen verstaerkungsstellung
GB2117583B (en) * 1982-03-31 1986-01-29 Ferranti Plc Gain control circuit
US4447783A (en) * 1982-05-19 1984-05-08 The Perkin-Elmer Corp. Programmable RF power regulator (stabilizer)
US4560949A (en) * 1982-09-27 1985-12-24 Rockwell International Corporation High speed AGC circuit
JPS5981113U (ja) * 1982-11-25 1984-06-01 日本電気株式会社 出力電力制御回路
JPH0744417B2 (ja) * 1982-11-27 1995-05-15 株式会社東芝 ノイズキャンセル回路
US4495648A (en) * 1982-12-27 1985-01-22 At&T Bell Laboratories Transmitter power control circuit
US4523155A (en) * 1983-05-04 1985-06-11 Motorola, Inc. Temperature compensated automatic output control circuitry for RF signal power amplifiers with wide dynamic range
NL8400495A (nl) * 1984-02-16 1985-09-16 Philips Nv In versterking geregelde versterkerinrichting.
US4593409A (en) * 1984-04-04 1986-06-03 Motorola, Inc. Transceiver protection arrangement
JPS60223231A (ja) * 1984-04-19 1985-11-07 Nec Corp 無線通信機
US4613990A (en) * 1984-06-25 1986-09-23 At&T Bell Laboratories Radiotelephone transmission power control
US4592252A (en) * 1984-07-23 1986-06-03 Cdp, Ltd. Rolling cutters for drill bits, and processes to produce same
US4661993A (en) * 1984-10-12 1987-04-28 At&T Company Technique for improving radio system performance during fading
JPS61210728A (ja) * 1985-03-14 1986-09-18 Alps Electric Co Ltd 送信機の出力電力制御装置
US4602218A (en) * 1985-04-30 1986-07-22 Motorola, Inc. Automatic output control circuitry for RF power amplifiers with wide dynamic range
JPS62199133A (ja) * 1986-02-27 1987-09-02 Nec Corp 自動車電話接続方式
US4740964A (en) * 1986-06-20 1988-04-26 Rockwell International Corporation Alarm indications signal detection apparatus
US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
JPS63226124A (ja) * 1986-10-29 1988-09-20 Oki Electric Ind Co Ltd 無線装置用レベル制御回路
FR2606953A1 (fr) * 1986-11-18 1988-05-20 Radiotechnique Compelec Circuit d'amplification a gain variable et son application a un dispositif de controle automatique de gain
US4727337A (en) * 1987-04-24 1988-02-23 Motorola, Inc. Protection circuit for RF power amplifiers
US4816772A (en) * 1988-03-09 1989-03-28 Rockwell International Corporation Wide range linear automatic gain control amplifier
US5163181A (en) * 1988-10-21 1992-11-10 Harris Corporation Multiple rf signal amplification method and apparatus
US4901032A (en) * 1988-12-01 1990-02-13 General Electric Company Digitally controlled variable power amplifier
JP2609310B2 (ja) * 1988-12-22 1997-05-14 株式会社日立製作所 送信回路
US4893093A (en) * 1989-02-02 1990-01-09 United Technologies Incorporated Switched power splitter
FI81931C (fi) * 1989-05-12 1990-12-10 Nokia Mobira Oy Foerfarande foer alstring av laoga effektnivaoer i saendaren av en radiotelefon.
CA2017904C (en) * 1989-05-31 1993-11-16 Shinichi Miyazaki High frequency amplifier circuit capable of optimizing a total power consumption
CA2035455C (en) * 1989-06-30 1995-08-22 Kouji Chiba Linear transmitter
JP2986832B2 (ja) * 1990-03-13 1999-12-06 三菱電機株式会社 利得可変増幅器
JPH0454006A (ja) * 1990-06-22 1992-02-21 Fujitsu Ltd 増幅装置
US5099204A (en) * 1990-10-15 1992-03-24 Qualcomm Incorporated Linear gain control amplifier
US5107225A (en) * 1990-11-30 1992-04-21 Qualcomm Incorporated High dynamic range closed loop automatic gain control circuit
US5132634A (en) * 1991-03-25 1992-07-21 Motorola, Inc. Amplifier circuit with envelope smoothing
US5136300A (en) * 1991-06-13 1992-08-04 Westinghouse Electric Corp. Modular solid state radar transmitter
US5175871A (en) * 1991-08-08 1992-12-29 Ericsson/Ge Mobile Communication Holding Inc. Power amplifier for a cellular telephone
US5172072A (en) * 1991-09-06 1992-12-15 Itt Corporation High efficiency harmonic injection power amplifier
US5192919A (en) * 1991-10-03 1993-03-09 Motorola, Inc. Transmitter having a temperature adjusted power amplifier
US5287543A (en) * 1991-10-07 1994-02-15 General Electric Co. Multichannel communication system with an amplifier in each channel
IT1251931B (it) * 1991-10-16 1995-05-27 Fiar Spa Dispositivo di controllo particolarmente per amplificatori in satelliti e simili.
FI93411C (fi) * 1992-02-24 1995-03-27 Nokia Telecommunications Oy Menetelmä radiolähetinyksikön ohjaamiseksi
RU2144260C1 (ru) * 1992-03-13 2000-01-10 Моторола, Инк. Сеть, объединяющая усилители мощности сигналов высокой частоты и двухрежимное устройство связи
SE470078B (sv) * 1992-03-27 1993-11-01 Ericsson Telefon Ab L M Basstation för cellindelade frekvenshoppande TDMA- radiokommunikationssystem
JPH06132746A (ja) * 1992-10-20 1994-05-13 Sharp Corp 電力増幅器
US5302914A (en) * 1992-10-20 1994-04-12 At&T Bell Laboratories Method and apparatus for reducing the peak-to-average power in multi-carrier RF communication systems
US5304943A (en) * 1992-11-16 1994-04-19 Harris Corporation In-phase combiner and RF recovery system
US5339046A (en) * 1993-06-03 1994-08-16 Alps Electric Co., Ltd. Temperature compensated variable gain amplifier
US5423082A (en) * 1993-06-24 1995-06-06 Motorola, Inc. Method for a transmitter to compensate for varying loading without an isolator
JP2630250B2 (ja) * 1994-03-16 1997-07-16 日本電気株式会社 電力増幅装置のレベル監視装置
US5541554A (en) * 1995-03-06 1996-07-30 Motorola, Inc. Multi-mode power amplifier
US5608353A (en) * 1995-03-29 1997-03-04 Rf Micro Devices, Inc. HBT power amplifier
US5568086A (en) * 1995-05-25 1996-10-22 Motorola, Inc. Linear power amplifier for high efficiency multi-carrier performance
US5678208A (en) * 1995-07-19 1997-10-14 Motorola, Inc. Transmission system

Also Published As

Publication number Publication date
KR100430323B1 (ko) 2004-06-16
ATE237887T1 (de) 2003-05-15
AR005313A1 (es) 1999-04-28
TW342553B (en) 1998-10-11
EP0870361B1 (en) 2003-04-16
JP3942637B2 (ja) 2007-07-11
ES2198506T3 (es) 2004-02-01
EP0870361A1 (en) 1998-10-14
CN1079612C (zh) 2002-02-20
BR9612335A (pt) 1999-03-02
ZA9610942B (en) 1997-06-30
CN1206515A (zh) 1999-01-27
WO1997024800A1 (en) 1997-07-10
AU724644B2 (en) 2000-09-28
HK1016761A1 (en) 1999-11-05
US5974041A (en) 1999-10-26
KR19990076806A (ko) 1999-10-15
RU2175809C2 (ru) 2001-11-10
AU1428697A (en) 1997-07-28
JP2000502864A (ja) 2000-03-07
IL125122A0 (en) 1999-01-26
PT870361E (pt) 2003-08-29
DE69627529T2 (de) 2004-03-04
IL148788A0 (en) 2002-09-12
IL125122A (en) 2003-09-17
DE69627529D1 (de) 2003-05-22
MY124544A (en) 2006-06-30

Similar Documents

Publication Publication Date Title
DK0870361T3 (da) Effektiv effektforstærker med parallelle trin
DE69727962D1 (de) Effizienter leistungsverstärker mit parallelen stufen
DE69526144D1 (de) Leistungsverstärker
DE69631799D1 (de) Stromversorgungsgerät
FI971051A (fi) Tehokas lineaaritehovahvistin
DE69508653D1 (de) Hochfrequenzleistungsverstärker
DE69724795D1 (de) Lautsprechersantriebeinheiten
DE69620099D1 (de) Hochfrequenz-Leistungsverstärker
DE69637671D1 (de) Gegentakt-leistungsverstärker
NO953605D0 (no) Kraftsystem
DE69831289D1 (de) Hochfrequenzverstärker mit hohem Wirkungsgrad
DE19580147T1 (de) Windmühle
KR970004987A (ko) 전력증폭모듈
NO995112L (no) Effektforsterker
DE69429660D1 (de) Brückenverstärker mit hohem Wirkungsgrad
DE59605507D1 (de) Bremskraftverstärker
NO960636L (no) Kraft-forsterker
DE69724552D1 (de) Leistungsverstärkerapparat
DE69725098D1 (de) Leistungsverstärkervorrichtung
DE69624646D1 (de) Leistungsverstärkerschaltung
FI962271A (fi) Hakkurivirtalähdejärjestely
DE59602640D1 (de) Bremskraftverstärker
ATA196394A (de) Windrad
KR950026264U (ko) 세절기
SE9503892L (sv) Energiförstärkare