DE3674275D1 - Automatische reduktion von intermodulationsprodukten in hochleistungslinearen verstaerkern. - Google Patents

Automatische reduktion von intermodulationsprodukten in hochleistungslinearen verstaerkern.

Info

Publication number
DE3674275D1
DE3674275D1 DE8686900893T DE3674275T DE3674275D1 DE 3674275 D1 DE3674275 D1 DE 3674275D1 DE 8686900893 T DE8686900893 T DE 8686900893T DE 3674275 T DE3674275 T DE 3674275T DE 3674275 D1 DE3674275 D1 DE 3674275D1
Authority
DE
Germany
Prior art keywords
intermodulation products
linear amplifiers
automatic reduction
performance linear
performance
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
Application number
DE8686900893T
Other languages
English (en)
Inventor
Evan Myer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co 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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Application granted granted Critical
Publication of DE3674275D1 publication Critical patent/DE3674275D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H03F1/3229—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction
    • H03F1/3235—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction using a pilot signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3212—Using a control circuit to adjust amplitude and phase of a signal in a signal path
DE8686900893T 1985-01-25 1986-01-07 Automatische reduktion von intermodulationsprodukten in hochleistungslinearen verstaerkern. Expired - Lifetime DE3674275D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/695,050 US4580105A (en) 1985-01-25 1985-01-25 Automatic reduction of intermodulation products in high power linear amplifiers
PCT/US1986/000019 WO1986004469A1 (en) 1985-01-25 1986-01-07 Automatic reduction of intermodulation products in high power linear amplifiers

Publications (1)

Publication Number Publication Date
DE3674275D1 true DE3674275D1 (de) 1990-10-25

Family

ID=24791353

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686900893T Expired - Lifetime DE3674275D1 (de) 1985-01-25 1986-01-07 Automatische reduktion von intermodulationsprodukten in hochleistungslinearen verstaerkern.

Country Status (6)

Country Link
US (1) US4580105A (de)
EP (1) EP0208765B1 (de)
JP (1) JPH0785522B2 (de)
CA (1) CA1241391A (de)
DE (1) DE3674275D1 (de)
WO (1) WO1986004469A1 (de)

Families Citing this family (62)

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US4885551A (en) * 1988-10-31 1989-12-05 American Telephone And Telegraph Company At&T Bell Laboratories Feed forward linear amplifier
GB2238196A (en) * 1989-11-16 1991-05-22 Motorola Inc Feed forward amplifier with pre-distortion
GB2238195A (en) * 1989-11-16 1991-05-22 Motorola Inc Feed forward amplifier with pilot tone cancellation
US5334946A (en) * 1990-04-25 1994-08-02 British Technology Group Limited Apparatus and method for reducing distortion in amplification
GB9009295D0 (en) * 1990-04-25 1990-06-20 Kenington Peter B Apparatus and method for reducing distortion in amplification
US5077532A (en) * 1990-12-17 1991-12-31 Motorola, Inc. Feed forward distortion minimization circuit
US5119040A (en) * 1991-01-04 1992-06-02 Motorola, Inc. Method and apparatus for optimizing the performance of a power amplifier circuit
US5130663A (en) * 1991-04-15 1992-07-14 Motorola, Inc. Feed forward amplifier network with frequency swept pilot tone
US5307022A (en) * 1991-04-15 1994-04-26 Motorola, Inc. High dynamic range modulation independent feed forward amplifier network
US5237288A (en) * 1992-06-05 1993-08-17 Sea, Inc. RF power amplifier linearization
JPH08504550A (ja) * 1992-12-15 1996-05-14 ブリティッシュ・テクノロジー・グループ・リミテッド 基準信号を用いた信号処理方法及び装置
US5386198A (en) * 1993-01-28 1995-01-31 Telefonaktiebolaget L M Ericsson Linear amplifier control
US5311155A (en) * 1993-05-10 1994-05-10 At&T Bell Laboratories Method and apparatus for imparting a linear frequency response to a signal
US5365187A (en) * 1993-10-29 1994-11-15 Hewlett-Packard Company Power amplifier utilizing the vector addition of two constant envelope carriers
JP3320210B2 (ja) * 1994-05-31 2002-09-03 富士通株式会社 初期動作時不要波出力防止型フィードフォワード増幅装置
US5455537A (en) * 1994-08-19 1995-10-03 Radio Frequency Systems, Inc. Feed forward amplifier
US5910965A (en) * 1995-06-30 1999-06-08 Harris Corporation Adaptive predistortion using over-the-hop feedback
US5694036A (en) * 1995-08-07 1997-12-02 Lucent Technologies Inc. Direction sensor and distortion reduction control circuitry
US5619168A (en) * 1995-08-07 1997-04-08 Lucent Technologies Inc. Distortion creation and reduction circuit
US5621354A (en) * 1995-10-17 1997-04-15 Motorola, Inc. Apparatus and method for performing error corrected amplification in a radio frequency system
US5623227A (en) * 1995-10-17 1997-04-22 Motorola, Inc. Amplifier circuit and method of controlling an amplifier for use in a radio frequency communication system
US5742201A (en) * 1996-01-30 1998-04-21 Spectrian Polar envelope correction mechanism for enhancing linearity of RF/microwave power amplifier
US5892397A (en) * 1996-03-29 1999-04-06 Spectrian Adaptive compensation of RF amplifier distortion by injecting predistortion signal derived from respectively different functions of input signal amplitude
US5796304A (en) * 1996-04-24 1998-08-18 Powerwave Technologies, Inc. Broadband amplifier with quadrature pilot signal
US5929701A (en) * 1996-12-13 1999-07-27 At&T Corp. Feed forward amplifier system and method
FI104021B1 (fi) 1997-10-29 1999-10-29 Nokia Networks Oy Adaptaatiomenetelmä ja vahvistinjärjestely
FI105625B (fi) 1997-10-29 2000-09-15 Nokia Networks Oy Säätömenetelmä ja säätöjärjestely
US6133789A (en) * 1997-12-10 2000-10-17 Nortel Networks Corporation Method and system for robustly linearizing a radio frequency power amplifier using vector feedback
US6232835B1 (en) 1998-02-13 2001-05-15 Nortel Networks Limited System and method of linearizing the gain error of a power amplifier
GB9804744D0 (en) 1998-03-06 1998-04-29 Wireless Systems Int Ltd Feed forward amplifier
JP2000004124A (ja) * 1998-06-17 2000-01-07 Nec Corp フィードフォワード増幅器
US6198419B1 (en) 1998-06-17 2001-03-06 Lucent Technologies, Inc. Method and apparatus for extending the spurious free dynamic range of a digital-to-analog converter
US6363120B1 (en) 1998-06-17 2002-03-26 Lucent Technologies Inc. Apparatus and method for extending the dynamic range of a mixer using feed forward distortion reduction
US6339701B1 (en) 1998-06-17 2002-01-15 Lucent Technologies, Inc. Method and apparatus for extending the dynamic range of a frequency mixer
US6097324A (en) * 1998-06-17 2000-08-01 Lucent Technologies Inc. Method and apparatus for extending the spurious free dynamic range of an analog-to-digital converter
GB2339354B (en) 1998-07-02 2003-10-08 Wireless Systems Int Ltd A predistorter
US6091296A (en) * 1998-08-14 2000-07-18 Samsung Electronics Co., Ltd. Single loop feedforward amplifier for use in an RF transmitter and method of operation
US6166600A (en) * 1998-08-31 2000-12-26 Lucent Technologies Inc. Automatic gain and phase controlled feedforward amplifier without pilot signal
US6069531A (en) * 1998-08-31 2000-05-30 Lucent Technologies Inc. Feed forward amplifier improvement incorporating an automatic gain and phase controller
US6052023A (en) * 1998-08-31 2000-04-18 Lucent Technologies Inc. Calibration system for feed forward distortion reduction system
US6188732B1 (en) 1998-10-19 2001-02-13 Samsung Electronics Co., Ltd. Digital feedforward amplifier for use in an RF transmitter and method of operation
US6198346B1 (en) * 1998-11-18 2001-03-06 At&T Corp. Adaptive linear amplifier without output power loss
US6127889A (en) * 1998-11-18 2000-10-03 Lucent Technologies Inc. Nested feed forward distortion reduction system
US5986499A (en) * 1998-12-21 1999-11-16 Lucent Technologies Inc. Pilot signal detection system using band reject filter
GB2347031B (en) 1999-02-12 2001-03-21 Wireless Systems Int Ltd Signal processing means
US6393372B1 (en) 1999-05-17 2002-05-21 Eugene Rzyski Automated frequency stepping noise measurement system
US6172564B1 (en) 1999-07-30 2001-01-09 Eugene Rzyski Intermodulation product cancellation circuit
US6259319B1 (en) * 1999-08-19 2001-07-10 Lucent Technologies Inc. Adaptive gain and/or phase adjustment control system and method
US6674808B1 (en) 1999-12-28 2004-01-06 General Dynamics Decision Systems, Inc. Post-amplifier filter rejection equalization
JP2001203540A (ja) 2000-01-19 2001-07-27 Hitachi Ltd 高周波電力増幅器
US6320461B1 (en) 2000-05-12 2001-11-20 Jhong Sam Lee Ultra-linear feedforward RF power amplifier
US6496064B2 (en) 2000-08-15 2002-12-17 Eugene Rzyski Intermodulation product cancellation circuit
US6359508B1 (en) 2000-08-17 2002-03-19 Spectrian Corporation Distortion detection apparatus for controlling predistortion, carrier cancellation and feed-forward cancellation in linear RF power amplifiers
US6934341B2 (en) * 2000-08-29 2005-08-23 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for plurality signal generation
US6525603B1 (en) 2001-01-05 2003-02-25 Remec, Inc. Feedforward amplifier linearization adapting off modulation
US6734726B2 (en) * 2001-06-29 2004-05-11 Remec, Inc. Balanced distortion reduction circuit
CN1241324C (zh) * 2001-07-18 2006-02-08 松下电器产业株式会社 前馈放大器及前馈放大方法
US6677817B2 (en) 2001-12-17 2004-01-13 Powerwave Technologies, Inc. Feed forward amplifier with amplifier stage failure detection using pilot tones
US6556076B1 (en) 2001-12-17 2003-04-29 Powerwave Technologies, Inc. Feed forward amplifier with amplifier stage failure detection using pilot tones
US7002407B2 (en) 2002-12-18 2006-02-21 Powerwave Technologies, Inc. Delay mismatched feed forward amplifier system using penalties and floors for control
AU2003293522A1 (en) * 2002-12-18 2004-07-29 Powerwave Technologies, Inc. Feed forward amplifier system using penalties and floors for optimal control
US7474237B2 (en) * 2006-02-03 2009-01-06 The Trustees Of Columbia University In The City Of New York Circuits and methods for using error correction in power amplification and signal conversion

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE214167C (de) * 1970-09-23 Communications Satellite Corp
US3886470A (en) * 1973-12-04 1975-05-27 Amplifier Design And Service I Feed-forward amplifier system
US3922617A (en) * 1974-11-18 1975-11-25 Cutler Hammer Inc Adaptive feed forward system
US4291277A (en) * 1979-05-16 1981-09-22 Harris Corporation Adaptive predistortion technique for linearizing a power amplifier for digital data systems
US4276514A (en) * 1979-07-09 1981-06-30 Trw Inc. Wideband, phase compensated amplifier with negative feedback of distortion components in the output signal
DE3113005A1 (de) * 1981-04-01 1982-10-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und schaltungsanordnung zur kompensation der nichtlinearitaeten von uebertragungsgliedern in einem richtfunkuebertragungssystem
GB2107540B (en) * 1981-10-14 1985-06-26 Marconi Co Ltd Feedforward amplifiers

Also Published As

Publication number Publication date
EP0208765B1 (de) 1990-09-19
JPS62501603A (ja) 1987-06-25
EP0208765A1 (de) 1987-01-21
US4580105A (en) 1986-04-01
CA1241391A (en) 1988-08-30
WO1986004469A1 (en) 1986-07-31
JPH0785522B2 (ja) 1995-09-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

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