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GB2437335B - RF Transmitter and method of operation - Google Patents

RF Transmitter and method of operation

Info

Publication number
GB2437335B
GB2437335B GB0607822A GB0607822A GB2437335B GB 2437335 B GB2437335 B GB 2437335B GB 0607822 A GB0607822 A GB 0607822A GB 0607822 A GB0607822 A GB 0607822A GB 2437335 B GB2437335 B GB 2437335B
Authority
GB
United Kingdom
Prior art keywords
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
GB0607822A
Other versions
GB2437335A (en
GB0607822D0 (en
Inventor
Anders Stensgaard Larsen
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 GB0607822A priority Critical patent/GB2437335B/en
Publication of GB0607822D0 publication Critical patent/GB0607822D0/en
Publication of GB2437335A publication Critical patent/GB2437335A/en
Application granted granted Critical
Publication of GB2437335B publication Critical patent/GB2437335B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H03F1/0277—Selecting one or more amplifiers from a plurality of 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
    • H03F1/02—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
    • H03F1/0288—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control 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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/72—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • H03F2203/7236—Indexing scheme relating to gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal the gated amplifier being switched on or off by putting into parallel or not, by choosing between amplifiers by (a ) switch(es)

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
GB0607822A 2006-04-21 2006-04-21 RF Transmitter and method of operation Expired - Fee Related GB2437335B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0607822A GB2437335B (en) 2006-04-21 2006-04-21 RF Transmitter and method of operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0607822A GB2437335B (en) 2006-04-21 2006-04-21 RF Transmitter and method of operation

Publications (3)

Publication Number Publication Date
GB0607822D0 GB0607822D0 (en) 2006-05-31
GB2437335A GB2437335A (en) 2007-10-24
GB2437335B true GB2437335B (en) 2008-06-04

Family

ID=36580937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0607822A Expired - Fee Related GB2437335B (en) 2006-04-21 2006-04-21 RF Transmitter and method of operation

Country Status (1)

Country Link
GB (1) GB2437335B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158190A (en) * 2011-04-29 2011-08-17 中兴通讯股份有限公司 Doherty power amplifier and implementation method thereof
CN102761310B (en) 2011-04-29 2015-06-10 中兴通讯股份有限公司 Doherty power amplifier and implementation method thereof
US9825593B2 (en) * 2016-03-16 2017-11-21 Technische Universiteit Delft Highly linear, highly efficient wideband RF power amplifier having wide video bandwidth capability
CN114024507B (en) * 2022-01-10 2022-07-01 荣耀终端有限公司 Power amplification circuit, radio frequency front end circuit, electronic device and signal amplification method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5974041A (en) * 1995-12-27 1999-10-26 Qualcomm Incorporated Efficient parallel-stage power amplifier
US6028486A (en) * 1997-10-07 2000-02-22 Telefonaktiebolaget Lm Ericsson Method and apparatus for reducing power dissipation in multi-carrier amplifiers
US6445247B1 (en) * 2001-06-01 2002-09-03 Qualcomm Incorporated Self-controlled high efficiency power amplifier
US6763470B1 (en) * 1999-05-19 2004-07-13 Globespanvirata, Inc. System and method for dynamically amplifying a delayed analog signal based on amplitude information obtained from its digital representation
EP1505725A1 (en) * 2003-08-07 2005-02-09 NTT DoCoMo, Inc. Power amplifier
EP1521376A1 (en) * 2003-10-04 2005-04-06 Lucent Technologies Network Systems GmbH Base station for a wireless telecommunications system
EP1521360A1 (en) * 2003-10-04 2005-04-06 Lucent Technologies Network Systems GmbH Parallel amplifier arrangement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5974041A (en) * 1995-12-27 1999-10-26 Qualcomm Incorporated Efficient parallel-stage power amplifier
US6028486A (en) * 1997-10-07 2000-02-22 Telefonaktiebolaget Lm Ericsson Method and apparatus for reducing power dissipation in multi-carrier amplifiers
US6763470B1 (en) * 1999-05-19 2004-07-13 Globespanvirata, Inc. System and method for dynamically amplifying a delayed analog signal based on amplitude information obtained from its digital representation
US6445247B1 (en) * 2001-06-01 2002-09-03 Qualcomm Incorporated Self-controlled high efficiency power amplifier
EP1505725A1 (en) * 2003-08-07 2005-02-09 NTT DoCoMo, Inc. Power amplifier
EP1521376A1 (en) * 2003-10-04 2005-04-06 Lucent Technologies Network Systems GmbH Base station for a wireless telecommunications system
EP1521360A1 (en) * 2003-10-04 2005-04-06 Lucent Technologies Network Systems GmbH Parallel amplifier arrangement

Also Published As

Publication number Publication date
GB2437335A (en) 2007-10-24
GB0607822D0 (en) 2006-05-31

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Legal Events

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

Effective date: 20120421