GB0320625D0 - Optimising power consumption in amplifiers - Google Patents

Optimising power consumption in amplifiers

Info

Publication number
GB0320625D0
GB0320625D0 GB0320625A GB0320625A GB0320625D0 GB 0320625 D0 GB0320625 D0 GB 0320625D0 GB 0320625 A GB0320625 A GB 0320625A GB 0320625 A GB0320625 A GB 0320625A GB 0320625 D0 GB0320625 D0 GB 0320625D0
Authority
GB
United Kingdom
Prior art keywords
amplifiers
power consumption
optimising power
optimising
consumption
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Withdrawn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
GB0320625A
Other versions
GB2405758A (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.)
Roke Manor Research Ltd
Original Assignee
Roke Manor Research Ltd
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 Roke Manor Research Ltd filed Critical Roke Manor Research Ltd
Priority to GB0320625A priority Critical patent/GB2405758A/en
Publication of GB0320625D0 publication Critical patent/GB0320625D0/en
Publication of GB2405758A publication Critical patent/GB2405758A/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Withdrawn legal-status Critical Current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
    • H03F1/0244—Stepped control
    • H03F1/0255—Stepped control by using a signal derived from the output signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
GB0320625A 2003-09-03 2003-09-03 Bias circuits for optimising the efficiency of RF amplifiers in mobile 'phones Withdrawn GB2405758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0320625A GB2405758A (en) 2003-09-03 2003-09-03 Bias circuits for optimising the efficiency of RF amplifiers in mobile 'phones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0320625A GB2405758A (en) 2003-09-03 2003-09-03 Bias circuits for optimising the efficiency of RF amplifiers in mobile 'phones

Publications (2)

Publication Number Publication Date
GB0320625D0 true GB0320625D0 (en) 2003-10-01
GB2405758A GB2405758A (en) 2005-03-09

Family

ID=28686832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0320625A Withdrawn GB2405758A (en) 2003-09-03 2003-09-03 Bias circuits for optimising the efficiency of RF amplifiers in mobile 'phones

Country Status (1)

Country Link
GB (1) GB2405758A (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945709C2 (en) * 1999-09-23 2002-06-20 Infineon Technologies Ag Circuit arrangement for regulating the operating point of a power amplifier and its use
US6313705B1 (en) * 1999-12-20 2001-11-06 Rf Micro Devices, Inc. Bias network for high efficiency RF linear power amplifier
US6300837B1 (en) * 2000-03-28 2001-10-09 Philips Electronics North America Corporation Dynamic bias boosting circuit for a power amplifier
JP3631426B2 (en) * 2000-09-25 2005-03-23 株式会社東芝 High power amplifier
US6778018B2 (en) * 2001-07-16 2004-08-17 Koninklijke Philips Electronics N.V. Linear power amplifier
US7288992B2 (en) * 2002-03-20 2007-10-30 Roke Manor Research Limited Bias circuit for a bipolar transistor

Also Published As

Publication number Publication date
GB2405758A (en) 2005-03-09

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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)