GB9818429D0 - Transmitter having an improved power added efficiency and radio using same - Google Patents

Transmitter having an improved power added efficiency and radio using same

Info

Publication number
GB9818429D0
GB9818429D0 GBGB9818429.4A GB9818429A GB9818429D0 GB 9818429 D0 GB9818429 D0 GB 9818429D0 GB 9818429 A GB9818429 A GB 9818429A GB 9818429 D0 GB9818429 D0 GB 9818429D0
Authority
GB
United Kingdom
Prior art keywords
transmitter
radio
same
improved power
power added
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.)
Withdrawn
Application number
GBGB9818429.4A
Other versions
GB2329087A (en
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
Publication of GB9818429D0 publication Critical patent/GB9818429D0/en
Publication of GB2329087A publication Critical patent/GB2329087A/en
Withdrawn legal-status Critical Current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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0216—Continuous control
    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/045—Circuits with power amplifiers with means for improving efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
GB9818429A 1997-09-08 1998-08-25 Improving the efficiency of a transmitter amplifier by controlling an amplifier voltage using a voltage conditioner such as a switched mode converter Withdrawn GB2329087A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US92512897A 1997-09-08 1997-09-08

Publications (2)

Publication Number Publication Date
GB9818429D0 true GB9818429D0 (en) 1998-10-21
GB2329087A GB2329087A (en) 1999-03-10

Family

ID=25451265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9818429A Withdrawn GB2329087A (en) 1997-09-08 1998-08-25 Improving the efficiency of a transmitter amplifier by controlling an amplifier voltage using a voltage conditioner such as a switched mode converter

Country Status (5)

Country Link
CN (1) CN1215260A (en)
BR (1) BR9803545A (en)
DE (1) DE19840092A1 (en)
FR (1) FR2768277A1 (en)
GB (1) GB2329087A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7058374B2 (en) 2002-10-15 2006-06-06 Skyworks Solutions, Inc. Low noise switching voltage regulator
GB0625942D0 (en) 2006-12-27 2007-02-07 Nokia Corp Switched mode power supply for a transmitter
CN101114860B (en) * 2007-08-17 2011-04-06 华为技术有限公司 Method and device for controlling power amplification
CN101938258B (en) * 2010-08-27 2013-06-05 华为终端有限公司 Method and device for controlling radio frequency power amplifier to transmit signal
US9502756B2 (en) * 2013-09-19 2016-11-22 Rohm Co., Ltd. Antenna driving device
CN106533461B (en) * 2016-11-11 2019-03-15 苏州能讯高能半导体有限公司 A kind of Base-station Transmission System

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4935705A (en) * 1988-12-29 1990-06-19 Motorola, Inc. High efficiency variable power amplifier
US5119042A (en) * 1990-08-30 1992-06-02 Hughes Aircraft Company Solid state power amplifier with dynamically adjusted operating point
JP3033623B2 (en) * 1990-11-30 2000-04-17 日本電気株式会社 Gate bias control circuit and amplifier
US5589796A (en) * 1994-11-01 1996-12-31 Motorola, Inc Method and apparatus for increasing amplifier efficiency
US5724005A (en) * 1996-04-25 1998-03-03 Lucent Technologies Inc. Linear power amplifier with automatic gate/base bias control for optimum efficiency
GB2316561B (en) * 1996-08-22 2001-01-03 Motorola Ltd Improved power amplifier and related method

Also Published As

Publication number Publication date
DE19840092A1 (en) 1999-03-18
CN1215260A (en) 1999-04-28
GB2329087A (en) 1999-03-10
BR9803545A (en) 1999-11-03
FR2768277A1 (en) 1999-03-12

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)