CA2021622A1 - Predistortion equalizer with resistive combiners and dividers - Google Patents

Predistortion equalizer with resistive combiners and dividers

Info

Publication number
CA2021622A1
CA2021622A1 CA002021622A CA2021622A CA2021622A1 CA 2021622 A1 CA2021622 A1 CA 2021622A1 CA 002021622 A CA002021622 A CA 002021622A CA 2021622 A CA2021622 A CA 2021622A CA 2021622 A1 CA2021622 A1 CA 2021622A1
Authority
CA
Canada
Prior art keywords
nonlinear
linear
resistive
channel
dividers
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
CA002021622A
Other languages
French (fr)
Other versions
CA2021622C (en
Inventor
Allen Katz
Robert Rudolph Urban
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.)
Lockheed Martin Corp
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of CA2021622A1 publication Critical patent/CA2021622A1/en
Application granted granted Critical
Publication of CA2021622C publication Critical patent/CA2021622C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Networks Using Active Elements (AREA)
  • Noise Elimination (AREA)
  • Waveguide Connection Structure (AREA)

Abstract

A predistortion equalizer for a power amplifier includes a linear channel and a nonlinear channel. A phase shifter is associated with the linear channel and an attenuator is associated with the nonlinear channel. A resistive power divider divides the received signal which is to be predistorted and divides it into two parts, each of which is applied to one of the channels. The two parts may be equal in magnitude. The linear and nonlinear signals at the outputs of the linear and nonlinear channels, respectively, are combined out-of-phase in a resistive combiner to produce a predistorted signal for application to a power amplifier. The resistive combiner and divider maximize bandwidth.
CA002021622A 1989-11-22 1990-07-19 Predistortion equalizer with resistive combiners and dividers Expired - Fee Related CA2021622C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US440,580 1989-11-22
US07/440,580 US5015965A (en) 1989-11-22 1989-11-22 Predistortion equalizer with resistive combiners and dividers

Publications (2)

Publication Number Publication Date
CA2021622A1 true CA2021622A1 (en) 1991-05-23
CA2021622C CA2021622C (en) 2001-09-18

Family

ID=23749326

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002021622A Expired - Fee Related CA2021622C (en) 1989-11-22 1990-07-19 Predistortion equalizer with resistive combiners and dividers

Country Status (4)

Country Link
US (1) US5015965A (en)
JP (1) JP3041805B2 (en)
CA (1) CA2021622C (en)
FR (1) FR2654879B1 (en)

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US5258722A (en) * 1991-12-13 1993-11-02 General Instrument Corporation, Jerrold Comminications Amplifier circuit with distortion cancellation
US5394113A (en) * 1992-08-28 1995-02-28 Harris Corporation High impedance low-distortion linear amplifier
US5304944A (en) * 1992-10-09 1994-04-19 Hughes Aircraft Company High frequency linearizer
US5745839A (en) * 1995-09-01 1998-04-28 Cd Radio, Inc. Satellite multiple access system with distortion cancellation and compression compensation
US5742201A (en) * 1996-01-30 1998-04-21 Spectrian Polar envelope correction mechanism for enhancing linearity of RF/microwave power amplifier
US6223019B1 (en) 1996-03-14 2001-04-24 Sirius Satellite Radio Inc. Efficient high latitude service area satellite mobile broadcasting systems
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
US5999047A (en) * 1996-11-25 1999-12-07 Space Systems/Loral, Inc. Linearizer for use with RF power amplifiers
US6023616A (en) * 1998-03-10 2000-02-08 Cd Radio Inc. Satellite broadcast receiver system
FR2773422B1 (en) * 1998-01-06 2000-02-04 Alsthom Cge Alcatel DEVICE FOR MONITORING THE AMPLITUDE AND PHASE OF A RADIO FREQUENCY SIGNAL
US6359506B1 (en) * 1998-04-02 2002-03-19 Ericsson Inc. Linear modulation using a linear and a non-linear amplifier
FI106412B (en) 1998-11-10 2001-01-31 Nokia Mobile Phones Ltd Linear power amplifier arrangement and method for operating it
IT1312224B1 (en) * 1999-03-23 2002-04-09 Cit Alcatel PRE / POST-DISTORTOR CIRCUIT, ESPECIALLY FOR MICROWAVE RADIO SYSTEMS.
US6255908B1 (en) * 1999-09-03 2001-07-03 Amplix Temperature compensated and digitally controlled amplitude and phase channel amplifier linearizer for multi-carrier amplification systems
GB2359431A (en) * 2000-02-16 2001-08-22 Hashem Madadi Multi-stage pre-distorter for a multi-stage amplifier
US6781454B1 (en) * 2000-07-13 2004-08-24 Hughes Electronics Corporation Linearized traveling wave tube circuit with pre-distortion linearizer
GB2375247A (en) * 2001-04-30 2002-11-06 Wireless Systems Int Ltd Signal processing apparatus incorporating clipping/attenuation and predistortion
US6864742B2 (en) * 2001-06-08 2005-03-08 Northrop Grumman Corporation Application of the doherty amplifier as a predistortion circuit for linearizing microwave amplifiers
FR2833431B1 (en) * 2001-12-06 2004-12-17 Cit Alcatel BROADBAND PREDISTORSION LINEARIZER
US6788140B2 (en) * 2002-02-13 2004-09-07 Texas Instruments Incorporated Ultra-low distortion, wide-bandwidth amplifier architecture using actively phase-matched feed-forward linearization
JP2003243939A (en) * 2002-02-14 2003-08-29 Seiko Epson Corp Distortion compensation circuit
US7254421B2 (en) * 2004-04-16 2007-08-07 Archteck, Inc. Configurable wireless computer communication attenuation device
US20060267689A1 (en) * 2005-05-24 2006-11-30 Intel Corporation Parallel power amplifier apparatus, method, and system
US7701292B2 (en) * 2007-03-13 2010-04-20 Realtek Semiconductor Corp. Programmable gain amplifier with noise cancellation
CN101888218B (en) * 2010-06-30 2013-01-23 西安电子科技大学 Simulated reflection type I-Q vector modulation circuit based on GaAs (Generally accepted Auditing standards) HBT (Heterojunction Bipolar Transistor) device
US8514007B1 (en) 2012-01-27 2013-08-20 Freescale Semiconductor, Inc. Adjustable power splitter and corresponding methods and apparatus
US9203348B2 (en) 2012-01-27 2015-12-01 Freescale Semiconductor, Inc. Adjustable power splitters and corresponding methods and apparatus
US8653890B1 (en) * 2012-10-19 2014-02-18 Freescale Semiconductor, Inc. Amplifier calibration
US9225291B2 (en) 2013-10-29 2015-12-29 Freescale Semiconductor, Inc. Adaptive adjustment of power splitter
US9774299B2 (en) 2014-09-29 2017-09-26 Nxp Usa, Inc. Modifiable signal adjustment devices for power amplifiers and corresponding methods and apparatus
US9647611B1 (en) 2015-10-28 2017-05-09 Nxp Usa, Inc. Reconfigurable power splitters and amplifiers, and corresponding methods
EP3442120B1 (en) * 2017-08-08 2021-02-03 Rohde & Schwarz GmbH & Co. KG Amplifier circuit and method

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Publication number Priority date Publication date Assignee Title
US3223940A (en) * 1962-06-29 1965-12-14 Gen Electric Redundant signal amplifier transmission channel
DE1269652B (en) * 1966-08-06 1968-06-06 Telefunken Patent Electronic circuit for distributing pulses
US3755754A (en) * 1972-02-04 1973-08-28 Varian Associates Predistortion compensation for a microwave amplifier
US3971993A (en) * 1972-04-21 1976-07-27 Constant James N High capacity recirculating delay loop integrator
FR2312152A1 (en) * 1975-05-23 1976-12-17 Lgt Lab Gen Telecomm GENERATOR OF NON-LINEARITY PRODUCTS AND PRECORRECTOR OF TRANSMISSION SYSTEM USING SUCH A GENERATOR
US4010426A (en) * 1975-11-12 1977-03-01 The United States Of America As Represented By The Secretary Of The Air Force Rf power amplifier parallel redundant system
US4109212A (en) * 1976-10-29 1978-08-22 Bell Telephone Laboratories, Incorporated Complementary distortion circuit
DE3002995C2 (en) * 1979-02-13 1983-09-29 Nippon Telegraph & Telephone Public Corp., Tokyo Customizable equalization system
JPS5683104A (en) * 1979-12-10 1981-07-07 Nec Corp Predistortion circuit
JPS5792906A (en) * 1980-11-28 1982-06-09 Nec Corp Compensating circuit for nonlinear distortion
US4430619A (en) * 1981-12-31 1984-02-07 Motorola, Inc. Adaptive radio frequency intermodulation minimizing apparatus
US4455536A (en) * 1982-01-21 1984-06-19 International Telecommunications Satellite Organization (Intelsat) Push-pull microwave amplifier
US4465980A (en) * 1982-09-23 1984-08-14 Rca Corporation Predistortion circuit for a power amplifier
US4588958A (en) * 1985-03-29 1986-05-13 Rca Corporation Adjustable reflective predistortion circuit

Also Published As

Publication number Publication date
JP3041805B2 (en) 2000-05-15
JPH03187601A (en) 1991-08-15
FR2654879A1 (en) 1991-05-24
FR2654879B1 (en) 1993-12-03
CA2021622C (en) 2001-09-18
US5015965A (en) 1991-05-14

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