CA2132519A1 - Linear amplifier control - Google Patents

Linear amplifier control

Info

Publication number
CA2132519A1
CA2132519A1 CA002132519A CA2132519A CA2132519A1 CA 2132519 A1 CA2132519 A1 CA 2132519A1 CA 002132519 A CA002132519 A CA 002132519A CA 2132519 A CA2132519 A CA 2132519A CA 2132519 A1 CA2132519 A1 CA 2132519A1
Authority
CA
Canada
Prior art keywords
feed
control
amount
spread spectrum
remapping
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.)
Granted
Application number
CA002132519A
Other languages
French (fr)
Other versions
CA2132519C (en
Inventor
Krister Ingemar Ripstrand
Thorsten Nygren
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Individual
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
Priority claimed from PCT/US1994/000067 external-priority patent/WO1994015671A1/en
Application filed by Individual filed Critical Individual
Publication of CA2132519A1 publication Critical patent/CA2132519A1/en
Application granted granted Critical
Publication of CA2132519C publication Critical patent/CA2132519C/en
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
    • 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
    • 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
    • H03F2201/3218—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion the main amplifier or error amplifier being a feedforward amplifier

Abstract

A method and apparatus for controlling a feed-forward compensated power amplifier system is disclosed which uses a spread spectrum technique to cover a control signal or signals and injects a composite signal at a suitable point into the feed-forward amplifier system to reduce distortion. The amount of bandwidth spread is governed by the amount of processing gain needed in the remapping process and the needed time response of the system. Control signals after remapping of the spread spectrum at the output of the system are correlated in a match filter correlator and the result is used to control, in either polar or Cartesian coordinates, the injection, in anti-phase, of the extracted distortion into the feed-forward amplifier output.
CA002132519A 1993-01-28 1994-01-28 Linear amplifier control Expired - Lifetime CA2132519C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/010,274 US5386198A (en) 1993-01-28 1993-01-28 Linear amplifier control
US010,274 1993-01-28
PCT/US1994/000067 WO1994015671A1 (en) 1992-12-31 1994-01-03 Rescue chute

Publications (2)

Publication Number Publication Date
CA2132519A1 true CA2132519A1 (en) 1994-07-29
CA2132519C CA2132519C (en) 2003-04-01

Family

ID=21744983

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002132519A Expired - Lifetime CA2132519C (en) 1993-01-28 1994-01-28 Linear amplifier control

Country Status (17)

Country Link
US (1) US5386198A (en)
EP (1) EP0632939B1 (en)
JP (1) JP3343911B2 (en)
KR (1) KR100327932B1 (en)
CN (1) CN1036105C (en)
AU (1) AU669974B2 (en)
CA (1) CA2132519C (en)
DE (1) DE69426095T2 (en)
DK (1) DK0632939T3 (en)
ES (1) ES2152975T3 (en)
FI (1) FI113310B (en)
GR (1) GR3034938T3 (en)
HK (1) HK1014298A1 (en)
MY (1) MY136253A (en)
PH (1) PH31519A (en)
SG (1) SG43123A1 (en)
WO (1) WO1994017587A1 (en)

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08504550A (en) * 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 Signal processing method and apparatus using reference signal
WO1996003802A1 (en) * 1994-07-28 1996-02-08 Aval Communications, Inc. A novel cancellation loop, for a feed-forward amplifier, employing an adaptive controller
US5610554A (en) * 1994-07-28 1997-03-11 Aval Communications Inc. Cancellation loop, for a feed-forward amplifier, employing an adaptive controller
US5485120A (en) * 1994-07-28 1996-01-16 Aval Communications Inc. Feed-forward power amplifier system with adaptive control and control method
US5491454A (en) * 1994-10-31 1996-02-13 Motorola, Inc. Method and apparatus for reducing distortion in an output signal of an amplifier
GB2296615A (en) * 1994-12-21 1996-07-03 Univ Bristol Distortion and noise reduction in wide band feedforward amplifier/mixer
EP0725477B1 (en) * 1995-02-02 2001-08-08 Nippon Telegraph And Telephone Corporation Distortion compensator
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
RU2142670C1 (en) * 1995-11-16 1999-12-10 Самсунг Электроникс Ко., Лтд. Device for linear power amplification
US5881091A (en) * 1996-02-05 1999-03-09 Hewlett-Packard Company Spread spectrum linearization for digitizing receivers
US5760646A (en) * 1996-03-29 1998-06-02 Spectrian Feed-forward correction loop with adaptive predistortion injection for linearization of RF power amplifier
US5789976A (en) * 1996-06-17 1998-08-04 Corporation De L'ecole Polytechnique Digital adaptive control of feedforward amplifier using frequency domain cancellation
SE506841C2 (en) * 1996-06-28 1998-02-16 Ericsson Telefon Ab L M Apparatus and method for phase distortion compensation
US5867064A (en) * 1996-08-19 1999-02-02 Motorola, Inc. Method and apparatus for improving intermodulation in a feed-forward amplifier
US5862459A (en) * 1996-08-27 1999-01-19 Telefonaktiebolaget Lm Ericsson Method of and apparatus for filtering intermodulation products in a radiocommunication system
AU4982397A (en) * 1996-10-15 1998-05-11 Adc Telecommunications, Incorporated Tunable filter with q-multiplication
DE19650388A1 (en) * 1996-12-05 1998-06-18 Bosch Gmbh Robert Circuit for linearizing an amplifier
US5929701A (en) * 1996-12-13 1999-07-27 At&T Corp. Feed forward amplifier system and method
GB9715278D0 (en) 1997-07-18 1997-09-24 Cambridge Consultants Signal processing system
JPH1168470A (en) * 1997-08-11 1999-03-09 Hitachi Ltd Feed forward amplifier
US6094096A (en) * 1997-12-12 2000-07-25 Lucent Technologies Inc. Pilot detection for a control system that reduces distortion produced by electrical circuits
WO1999033171A1 (en) * 1997-12-19 1999-07-01 Motorola Inc. Error corrrected amplifier circuit and method
US5912586A (en) * 1997-12-23 1999-06-15 Motorola, Inc. Feed forward amplifier with digital intermodulation control
US5999048A (en) * 1998-01-13 1999-12-07 Lucent Technologies Inc. Method and apparatus for spread spectrum pilot extraction for RF amplifiers
US5959500A (en) * 1998-01-26 1999-09-28 Glenayre Electronics, Inc. Model-based adaptive feedforward amplifier linearizer
JP2000004124A (en) * 1998-06-17 2000-01-07 Nec Corp Feedforward amplifier
GB9814400D0 (en) * 1998-07-02 1998-09-02 Nokia Telecommunications Oy Amplifier circuitry
FR2781102B1 (en) * 1998-07-10 2000-09-08 France Telecom AMPLIFIER DEVICE FOR CELLULAR RADIO COMMUNICATION SYSTEM REPEATER AND METHOD FOR IMPLEMENTING SAME
US6087898A (en) * 1998-09-03 2000-07-11 Baskin; Brian Closed loop feed forward system featuring carrier reutilization for synchronous detection
US6111462A (en) * 1998-11-18 2000-08-29 Mucenieks; Lance T. RF power amplifier linearization using parallel RF power amplifiers having intermod-complementing predistortion paths
US6166601A (en) * 1999-01-07 2000-12-26 Wiseband Communications Ltd. Super-linear multi-carrier power amplifier
US6326845B1 (en) * 1999-02-16 2001-12-04 Matsushita Electric Industrial Co., Ltd. Feedforward amplifier
US6236286B1 (en) * 1999-06-08 2001-05-22 Lucent Technologies, Inc. Integrated on-board automated alignment for a low distortion amplifier
JP3831251B2 (en) * 1999-09-30 2006-10-11 富士通株式会社 Transmission power amplification unit
US6275105B1 (en) 2000-02-07 2001-08-14 Amplix Adaptive linearization of a feedforward amplifier by complex gain stabilization of the error amplifier
US6275106B1 (en) * 2000-02-25 2001-08-14 Spectrian Corporation Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier
US6504428B2 (en) 2000-05-19 2003-01-07 Spectrian Corporation High linearity multicarrier RF amplifier
JP2001339251A (en) * 2000-05-25 2001-12-07 Mitsubishi Electric Corp Feedforward amplifier
US6934341B2 (en) 2000-08-29 2005-08-23 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for plurality signal generation
US6452446B1 (en) * 2000-12-29 2002-09-17 Spectrian Corporation Closed loop active cancellation technique (ACT)-based RF power amplifier linearization architecture
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
US6931080B2 (en) * 2001-08-13 2005-08-16 Lucent Technologies Inc. Multiple stage and/or nested predistortion system and method
US6614298B2 (en) * 2001-08-13 2003-09-02 Soma Networks, Inc. Apparatus and method for controlling adaptive circuits
US6700439B2 (en) 2002-04-11 2004-03-02 Andrew Corporation Zero-bias bypass switch
US6812786B2 (en) * 2002-04-11 2004-11-02 Andrew Corporation Zero-bias bypass switching circuit using mismatched 90 degrees hybrid
US7308234B2 (en) * 2005-01-19 2007-12-11 Northrop Grumman Corporation Feedforward spur cancellation approach using low IP amplifier
US7995976B2 (en) * 2005-04-05 2011-08-09 Powerwave Technologies, Inc. System and method using the pilot frequency from a positive feedback pilot system to improve second loop convergence for a feedforward amplifier
JP4951238B2 (en) * 2005-12-27 2012-06-13 パナソニック株式会社 Polar coordinate modulation transmission apparatus, adaptive distortion compensation processing system, polar modulation transmission method, and adaptive distortion compensation processing method
US8095090B2 (en) * 2006-02-03 2012-01-10 Quantance, Inc. RF power amplifier controller circuit
US7869542B2 (en) * 2006-02-03 2011-01-11 Quantance, Inc. Phase error de-glitching circuit and method of operating
US7933570B2 (en) * 2006-02-03 2011-04-26 Quantance, Inc. Power amplifier controller circuit
US7917106B2 (en) * 2006-02-03 2011-03-29 Quantance, Inc. RF power amplifier controller circuit including calibrated phase control loop
US8032097B2 (en) 2006-02-03 2011-10-04 Quantance, Inc. Amplitude error de-glitching circuit and method of operating
CN101401261B (en) * 2006-02-03 2012-11-21 匡坦斯公司 Power amplifier controller circuit
US8666556B2 (en) * 2009-12-10 2014-03-04 Alcon Research, Ltd. Systems and methods for dynamic feedforward
WO2013056270A1 (en) * 2011-10-13 2013-04-18 Physical Devices Llc Methods, systems, and non-transitory computer readable media for wideband frequency and bandwidth tunable filtering
US9350401B2 (en) 2010-08-30 2016-05-24 Physical Devices, Llc Tunable filter devices and methods
US9042857B2 (en) 2010-08-30 2015-05-26 Physical Devices, Llc Methods, systems, and non-transitory computer readable media for wideband frequency and bandwidth tunable filtering
US20120170618A1 (en) * 2011-01-04 2012-07-05 ABG Tag & Traq, LLC Ultra wideband time-delayed correlator
US8379699B2 (en) 2011-03-11 2013-02-19 Telefonaktiebolaget Lm Ericsson (Publ) Spread spectrum pilot signals in an electronic duplexer
EP2820447A4 (en) 2012-02-28 2015-11-11 Physical Devices Llc Methods, systems, and computer readable media for mitigation of in-band interference of global positioning system (gps) signals
US8995932B2 (en) 2013-01-04 2015-03-31 Telefonaktiebolaget L M Ericsson (Publ) Transmitter noise suppression in receiver
US9077440B2 (en) 2013-01-04 2015-07-07 Telefonaktiebolaget L M Ericsson (Publ) Digital suppression of transmitter intermodulation in receiver
US20150244431A1 (en) 2014-02-21 2015-08-27 Physical Devices, Llc Devices and methods for diversity signal enhancement and cosite cancellation
EP4156529A1 (en) * 2015-04-24 2023-03-29 Andrew Wireless Systems GmbH Circulator distortion cancellation subsystem

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE345180B (en) * 1971-06-21 1972-05-15 Ericsson Telefon Ab L M
US3781703A (en) * 1972-10-06 1973-12-25 Jerrold Electronics Corp Electronic amplifier with dual automatic slope control
US3918003A (en) * 1974-10-29 1975-11-04 Bell Telephone Labor Inc Combined feedback and feedforward automatic gain control
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
US4389618A (en) * 1981-04-15 1983-06-21 The United States Of America As Represented By The Secretary Of The Navy Adaptive feed-forward system
US4560945A (en) * 1984-09-04 1985-12-24 Westinghouse Electric Corp. Adaptive feedforward cancellation technique that is effective in reducing amplifier harmonic distortion products as well as intermodulation distortion products
GB2167256A (en) * 1984-11-17 1986-05-21 Racal Communications Equip Feedforward amplifiers
US4554514A (en) * 1984-12-21 1985-11-19 Rca Corporation Predistortion circuit with feedback
US4580105A (en) * 1985-01-25 1986-04-01 At&T Bell Laboratories Automatic reduction of intermodulation products in high power linear amplifiers
US4812779A (en) * 1985-05-31 1989-03-14 Texscan Corporation Low-power feedforward amplifier
US4885551A (en) * 1988-10-31 1989-12-05 American Telephone And Telegraph Company At&T Bell Laboratories Feed forward linear amplifier
US4879519A (en) * 1988-10-31 1989-11-07 American Telephone And Telegraph Company, At&T Bell Labs Predistortion compensated linear amplifier
US4926134A (en) * 1988-12-29 1990-05-15 Westinghouse Electric Corp. Gain monitoring of distortion cancellation amplifiers in a feedforward linear amplifier
US4943783A (en) * 1989-07-31 1990-07-24 Nippon Telegraph And Telephone Corporation Feed forward distortion correction circuit
GB2238196A (en) * 1989-11-16 1991-05-22 Motorola Inc Feed forward amplifier with pre-distortion
US4987378A (en) * 1989-11-28 1991-01-22 General Electric Company Feedforward predistortion linearizer
US5051704A (en) * 1990-02-06 1991-09-24 Motorola, Inc. Feedforward distortion cancellation circuit
GB9009295D0 (en) * 1990-04-25 1990-06-20 Kenington Peter B Apparatus and method for reducing distortion in amplification
US5065110A (en) * 1990-05-02 1991-11-12 Teledyne Mec Feed-forward amplifier including phase correction
US5077532A (en) * 1990-12-17 1991-12-31 Motorola, Inc. Feed forward distortion minimization circuit
US5130663A (en) * 1991-04-15 1992-07-14 Motorola, Inc. Feed forward amplifier network with frequency swept pilot tone
US8130663B2 (en) * 2007-09-14 2012-03-06 At&T Intellectual Property I, L.P. Methods and apparatus to route emergency communication sessions

Also Published As

Publication number Publication date
JPH07508152A (en) 1995-09-07
AU5982594A (en) 1994-08-15
FI113310B (en) 2004-03-31
FI944477A0 (en) 1994-09-27
GR3034938T3 (en) 2001-02-28
DK0632939T3 (en) 2001-01-22
CA2132519C (en) 2003-04-01
JP3343911B2 (en) 2002-11-11
CN1105805A (en) 1995-07-26
KR950701159A (en) 1995-02-20
AU669974B2 (en) 1996-06-27
HK1014298A1 (en) 1999-09-24
US5386198A (en) 1995-01-31
EP0632939B1 (en) 2000-10-11
ES2152975T3 (en) 2001-02-16
WO1994017587A1 (en) 1994-08-04
EP0632939A1 (en) 1995-01-11
MY136253A (en) 2008-09-30
FI944477A (en) 1994-11-25
CN1036105C (en) 1997-10-08
DE69426095T2 (en) 2001-05-10
KR100327932B1 (en) 2002-07-22
PH31519A (en) 1998-11-03
DE69426095D1 (en) 2000-11-16
SG43123A1 (en) 1997-10-17

Similar Documents

Publication Publication Date Title
CA2132519A1 (en) Linear amplifier control
EP0361452A3 (en) Digital automatic gain control apparatus and method
CA2145679A1 (en) Object oriented framework system
AU1195995A (en) Liquid spray apparatus and method
CA2142013A1 (en) Active High Transmission Loss Panel
CA2199708A1 (en) Efficient linear power amplification
CA2186945A1 (en) Method for processing mycobacteria
EP0795851A3 (en) Method and system for microphone array input type speech recognition
EP0844750A3 (en) Optical amplifier unit control methods, optical amplifier systems and systems which use the methods and amplifier systems
AU3147195A (en) Ultra-linear feedforward amplifier with adaptive control and method for adaptive control
CA2219997A1 (en) Method and apparatus for power control in a communication system
ATE161667T1 (en) DYNAMIC AREA COMPRESSION
CA2146243A1 (en) General analysis system
AU8622282A (en) Promoting plant growth with gibberellins plus sound waves
IL94042A0 (en) Method and apparatus for achieving improved anti-jam performance via conversion gain
EP0511396A4 (en) Method for setting coordinate system of robot
EP0084376A3 (en) Knock control system
JPS5387433A (en) Apparatus for controlling steering force of power steering system
AU8052091A (en) Apparatus and method for controlling the magnitude spectrum of acoustically combined signals
HUT75832A (en) Compositions comprising cyclomarin-a cyclic heptapeptide anti-inflammatory agent, the method for producing cyclomarin-a and method for treating mammals
CA2088750A1 (en) Linearized output control of a nonlinear amplifier
CA2108319A1 (en) Equalizing Amplifier
MY123116A (en) Echo controlling apparatus of video conferencing system and control method using the same
TW231384B (en) Linear amplifier control
DE69409221D1 (en) METHOD AND ARRANGEMENT FOR CONTROLLING A HIGH-FREQUENCY POWER AMPLIFIER

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20140128