GB0413118D0 - Amplifier impedance matching - Google Patents

Amplifier impedance matching

Info

Publication number
GB0413118D0
GB0413118D0 GB0413118A GB0413118A GB0413118D0 GB 0413118 D0 GB0413118 D0 GB 0413118D0 GB 0413118 A GB0413118 A GB 0413118A GB 0413118 A GB0413118 A GB 0413118A GB 0413118 D0 GB0413118 D0 GB 0413118D0
Authority
GB
United Kingdom
Prior art keywords
impedance matching
amplifier impedance
amplifier
matching
impedance
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
GB0413118A
Other versions
GB2404088B (en
GB2404088A (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.)
Sepura Ltd
Original Assignee
Sepura 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 Sepura Ltd filed Critical Sepura Ltd
Publication of GB0413118D0 publication Critical patent/GB0413118D0/en
Publication of GB2404088A publication Critical patent/GB2404088A/en
Application granted granted Critical
Publication of GB2404088B publication Critical patent/GB2404088B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • 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
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • 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
    • H03F3/191—Tuned amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • 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
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/387—A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/391—Indexing scheme relating to amplifiers the output circuit of an amplifying stage comprising an LC-network
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/504—Indexing scheme relating to amplifiers the supply voltage or current being continuously controlled by a controlling signal, e.g. the controlling signal of a transistor implemented as variable resistor in a supply path for, an IC-block showed amplifier
GB0413118A 2003-06-13 2004-06-11 Amplifier impedance matching Expired - Fee Related GB2404088B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0313781A GB0313781D0 (en) 2003-06-13 2003-06-13 Amplifier impedance matching

Publications (3)

Publication Number Publication Date
GB0413118D0 true GB0413118D0 (en) 2004-07-14
GB2404088A GB2404088A (en) 2005-01-19
GB2404088B GB2404088B (en) 2005-10-19

Family

ID=27636520

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0313781A Ceased GB0313781D0 (en) 2003-06-13 2003-06-13 Amplifier impedance matching
GB0413118A Expired - Fee Related GB2404088B (en) 2003-06-13 2004-06-11 Amplifier impedance matching

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0313781A Ceased GB0313781D0 (en) 2003-06-13 2003-06-13 Amplifier impedance matching

Country Status (4)

Country Link
EP (1) EP1634369A1 (en)
CN (1) CN1820408A (en)
GB (2) GB0313781D0 (en)
WO (1) WO2004112237A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2156552A4 (en) * 2007-06-20 2017-02-22 Telefonaktiebolaget LM Ericsson (publ) Improved feed forward noise reduction in a transmitter
US8432237B2 (en) 2009-05-21 2013-04-30 Qualcomm, Incorporated Output circuit with integrated impedance matching, power combining and filtering for power amplifiers and other circuits
WO2015127610A1 (en) * 2014-02-26 2015-09-03 华为技术有限公司 Method for amplifying power and power amplifier
CN104392597A (en) * 2014-11-26 2015-03-04 无锡华普微电子有限公司 Radio IC micro-power wireless remote transmission circuit
CN105790719A (en) * 2014-12-25 2016-07-20 中兴通讯股份有限公司 Method and apparatus for promoting DPD (Digital Pre-Distortion) performance of radio frequency power amplifier
CN111200406A (en) * 2020-01-17 2020-05-26 电子科技大学 Dual-passband power amplifier based on three-frequency impedance matching

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB451494A (en) * 1935-01-01 1936-08-04 William Proctor Wilson Improvements in and relating to electric impedance networks
US2185389A (en) * 1938-05-09 1940-01-02 Hazeltine Corp Feedback amplifier filter
US2398691A (en) * 1944-04-28 1946-04-16 Philco Radio & Television Corp Wide band amplifier
US3955146A (en) * 1972-06-30 1976-05-04 The United States Of America As Represented By The Secretary Of The Navy Circuit for coupling an antenna to a load
JP3120583B2 (en) * 1992-08-25 2000-12-25 株式会社デンソー High frequency amplifier stabilization circuit
JPH088635A (en) * 1994-06-23 1996-01-12 Taiyo Musen Kk Antenna impedance matching box and antenna system using the impeadance matching box
US6341216B1 (en) * 1995-12-18 2002-01-22 Matsushita Electric Industrial Co., Ltd. Transmitter-receiver circuit for radio communication and semiconductor integrated circuit device
US6449465B1 (en) * 1999-12-20 2002-09-10 Motorola, Inc. Method and apparatus for linear amplification of a radio frequency signal
JP3670222B2 (en) * 2001-05-29 2005-07-13 三菱電機株式会社 High frequency amplifier and high frequency multistage amplifier
US6566944B1 (en) * 2002-02-21 2003-05-20 Ericsson Inc. Current modulator with dynamic amplifier impedance compensation

Also Published As

Publication number Publication date
EP1634369A1 (en) 2006-03-15
CN1820408A (en) 2006-08-16
GB2404088B (en) 2005-10-19
GB0313781D0 (en) 2003-07-23
GB2404088A (en) 2005-01-19
WO2004112237A1 (en) 2004-12-23

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Legal Events

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

Effective date: 20090611