GB2281668B - Radio transmitter with power amplifier linearizer - Google Patents

Radio transmitter with power amplifier linearizer

Info

Publication number
GB2281668B
GB2281668B GB9317316A GB9317316A GB2281668B GB 2281668 B GB2281668 B GB 2281668B GB 9317316 A GB9317316 A GB 9317316A GB 9317316 A GB9317316 A GB 9317316A GB 2281668 B GB2281668 B GB 2281668B
Authority
GB
United Kingdom
Prior art keywords
power amplifier
radio transmitter
amplifier linearizer
linearizer
transmitter
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 - Fee Related
Application number
GB9317316A
Other versions
GB9317316D0 (en
GB2281668A (en
Inventor
Iian Horowitz
Moshe Ben-Ayun
Nachman Grabsky
Mark Rozental
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Priority to GB9317316A priority Critical patent/GB2281668B/en
Publication of GB9317316D0 publication Critical patent/GB9317316D0/en
Priority to PCT/IB1994/000301 priority patent/WO1995006354A1/en
Priority to US08/424,298 priority patent/US5722056A/en
Priority to EP94927029A priority patent/EP0665996A1/en
Priority to CN94190710A priority patent/CN1114847A/en
Publication of GB2281668A publication Critical patent/GB2281668A/en
Application granted granted Critical
Publication of GB2281668B publication Critical patent/GB2281668B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • 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
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • 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
    • H03F1/3294—Acting on the real and imaginary components of the input signal
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/345—Negative-feedback-circuit arrangements with or without positive feedback using hybrid or directional couplers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/57—Separate feedback of real and complex signals being present

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
GB9317316A 1993-08-20 1993-08-20 Radio transmitter with power amplifier linearizer Expired - Fee Related GB2281668B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB9317316A GB2281668B (en) 1993-08-20 1993-08-20 Radio transmitter with power amplifier linearizer
PCT/IB1994/000301 WO1995006354A1 (en) 1993-08-20 1994-08-11 Radio transmitter with power amplifier linearizer
US08/424,298 US5722056A (en) 1993-08-20 1994-08-11 Radio transmitter with power amplifier linearizer
EP94927029A EP0665996A1 (en) 1993-08-20 1994-08-11 Radio transmitter with power amplifier linearizer
CN94190710A CN1114847A (en) 1993-08-20 1994-08-11 Radio transmitter with power amplifier linearizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9317316A GB2281668B (en) 1993-08-20 1993-08-20 Radio transmitter with power amplifier linearizer

Publications (3)

Publication Number Publication Date
GB9317316D0 GB9317316D0 (en) 1993-10-06
GB2281668A GB2281668A (en) 1995-03-08
GB2281668B true GB2281668B (en) 1997-10-08

Family

ID=10740767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9317316A Expired - Fee Related GB2281668B (en) 1993-08-20 1993-08-20 Radio transmitter with power amplifier linearizer

Country Status (1)

Country Link
GB (1) GB2281668B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2301247A (en) * 1995-05-22 1996-11-27 Univ Bristol A cartesian loop transmitter amplifier
DE69734271T2 (en) * 1996-06-28 2006-06-29 Philips Intellectual Property & Standards Gmbh CIRCUIT ARRANGEMENT WITH CARTESIAN AMPLIFIER
GB2326297B (en) * 1997-06-09 2002-03-20 Linear Modulation Tech Radio frequency signal processing and amplification in cartesian loop amplifiers
US6208686B1 (en) * 1997-07-18 2001-03-27 Innova Corporation System and method for dynamic amplitude adjustment of modulating signal in frequency modulated transceivers
US6215986B1 (en) 1997-09-26 2001-04-10 Nortel Networks Corporation Reducing radio transmitter distortion
US7068985B2 (en) * 2003-05-19 2006-06-27 Sony Ericsson Mobile Communication Ab Radio transmitters with temperature compensated power control profiles and methods of operating same
WO2005117274A1 (en) * 2004-05-27 2005-12-08 Matsushita Electric Industrial Co., Ltd. Transmission output control circuit, and wireless device using the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0382697A2 (en) * 1989-02-08 1990-08-16 Nokia Mobile Phones Ltd. Control voltage generator in a transmitter arrangement for digitally modulated signals
US5066923A (en) * 1990-10-31 1991-11-19 Motorola, Inc. Linear transmitter training method and apparatus
GB2265270A (en) * 1992-03-02 1993-09-22 Motorola Ltd Linearization of an rf power amplifier using a feedback loop controlled by a look-up table

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0382697A2 (en) * 1989-02-08 1990-08-16 Nokia Mobile Phones Ltd. Control voltage generator in a transmitter arrangement for digitally modulated signals
US5066923A (en) * 1990-10-31 1991-11-19 Motorola, Inc. Linear transmitter training method and apparatus
GB2265270A (en) * 1992-03-02 1993-09-22 Motorola Ltd Linearization of an rf power amplifier using a feedback loop controlled by a look-up table

Also Published As

Publication number Publication date
GB9317316D0 (en) 1993-10-06
GB2281668A (en) 1995-03-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070820