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SE0202989D0 - Power amplifier efficiency - Google Patents

Power amplifier efficiency

Info

Publication number
SE0202989D0
SE0202989D0 SE0202989A SE0202989A SE0202989D0 SE 0202989 D0 SE0202989 D0 SE 0202989D0 SE 0202989 A SE0202989 A SE 0202989A SE 0202989 A SE0202989 A SE 0202989A SE 0202989 D0 SE0202989 D0 SE 0202989D0
Authority
SE
Sweden
Prior art keywords
power amplifier
impedance
changing
antenna element
dependence
Prior art date
Application number
SE0202989A
Other languages
English (en)
Inventor
Anders Thornell-Pers
Original Assignee
Allgon Mobile Comm Ab
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 Allgon Mobile Comm Ab filed Critical Allgon Mobile Comm Ab
Priority to SE0202989A priority Critical patent/SE0202989D0/sv
Publication of SE0202989D0 publication Critical patent/SE0202989D0/sv
Priority to CNB2003801006113A priority patent/CN100438329C/zh
Priority to EP03748868A priority patent/EP1550206A1/en
Priority to PCT/SE2003/001582 priority patent/WO2004034568A1/en
Priority to AU2003267923A priority patent/AU2003267923A1/en
Priority to KR1020047016195A priority patent/KR20050053528A/ko
Priority to US10/521,990 priority patent/US7292829B2/en

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
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B1/00—Details
    • H03B1/04—Reducing undesired oscillations, e.g. harmonics
    • 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
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying 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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
SE0202989A 2002-10-10 2002-10-10 Power amplifier efficiency SE0202989D0 (sv)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE0202989A SE0202989D0 (sv) 2002-10-10 2002-10-10 Power amplifier efficiency
CNB2003801006113A CN100438329C (zh) 2002-10-10 2003-10-10 一种提高功率放大器的效率的方法和设备
EP03748868A EP1550206A1 (en) 2002-10-10 2003-10-10 Power amplifier efficiency
PCT/SE2003/001582 WO2004034568A1 (en) 2002-10-10 2003-10-10 Power amplifier efficiency
AU2003267923A AU2003267923A1 (en) 2002-10-10 2003-10-10 Power amplifier efficiency
KR1020047016195A KR20050053528A (ko) 2002-10-10 2003-10-10 파워증폭기 효율
US10/521,990 US7292829B2 (en) 2002-10-10 2003-10-10 Power amplifier efficiency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0202989A SE0202989D0 (sv) 2002-10-10 2002-10-10 Power amplifier efficiency

Publications (1)

Publication Number Publication Date
SE0202989D0 true SE0202989D0 (sv) 2002-10-10

Family

ID=20289223

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0202989A SE0202989D0 (sv) 2002-10-10 2002-10-10 Power amplifier efficiency

Country Status (7)

Country Link
US (1) US7292829B2 (sv)
EP (1) EP1550206A1 (sv)
KR (1) KR20050053528A (sv)
CN (1) CN100438329C (sv)
AU (1) AU2003267923A1 (sv)
SE (1) SE0202989D0 (sv)
WO (1) WO2004034568A1 (sv)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7834813B2 (en) * 2004-10-15 2010-11-16 Skycross, Inc. Methods and apparatuses for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness
US8948713B2 (en) * 2009-06-16 2015-02-03 Broadcom Corporation Antenna impedance/power amplifier source impedance measurement circuitry and device operation based thereon
GB2532901B (en) * 2009-12-08 2016-09-28 Microsoft Technology Licensing Llc Improvements relating to power amplifiers and antennas
US9048536B2 (en) * 2012-07-09 2015-06-02 Htc Corporation Mobile communication device and impedance matching method thereof
CN103023441A (zh) * 2012-12-06 2013-04-03 北京中科汉天下电子技术有限公司 射频功率放大器的带宽调节方法以及射频功率放大电路
CN119452576A (zh) * 2022-06-21 2025-02-14 株式会社村田制作所 高频电路

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6061025A (en) * 1995-12-07 2000-05-09 Atlantic Aerospace Electronics Corporation Tunable microstrip patch antenna and control system therefor
US5994965A (en) * 1998-04-03 1999-11-30 Cbs Corporation Silicon carbide high frequency high power amplifier
JP2000101456A (ja) * 1998-09-24 2000-04-07 Fujitsu Ltd 無線送信装置
US6678506B1 (en) * 1999-01-13 2004-01-13 Nortel Networks Limited Extended range power detector
JP2000295055A (ja) * 1999-04-01 2000-10-20 Matsushita Electric Ind Co Ltd 送信機および受信機
US6349216B1 (en) * 1999-07-22 2002-02-19 Motorola, Inc. Load envelope following amplifier system
US6556814B1 (en) * 1999-07-22 2003-04-29 Motorola, Inc. Memory-based amplifier load adjust system
KR100358444B1 (ko) * 1999-07-27 2002-10-25 엘지전자 주식회사 휴대 무선 전화기의 안테나 매칭 장치
CN1249851C (zh) * 1999-10-18 2006-04-05 松下电器产业株式会社 使用相同技术的用于无线通信与便携式无线装置的天线
EP1156582A3 (en) * 2000-05-16 2004-04-28 Nokia Corporation Transmitter/receiver chain impedance optimization
JP2002064386A (ja) * 2000-08-23 2002-02-28 Sony Corp 整合装置
AU2001296842A1 (en) * 2000-10-12 2002-04-22 E-Tenna Corporation Tunable reduced weight artificial dielectric antennas
EP1376761B1 (en) * 2001-03-15 2007-11-14 Matsushita Electric Industrial Co., Ltd. Antenna apparatus
EP1248362B1 (en) * 2001-04-06 2009-03-04 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for increasing the efficiency of a transmitter
US20020183013A1 (en) * 2001-05-25 2002-12-05 Auckland David T. Programmable radio frequency sub-system with integrated antennas and filters and wireless communication device using same
KR20020096008A (ko) * 2001-06-19 2002-12-28 엘지전자 주식회사 안테나 정합 회로망

Also Published As

Publication number Publication date
US20050239423A1 (en) 2005-10-27
CN100438329C (zh) 2008-11-26
US7292829B2 (en) 2007-11-06
WO2004034568A1 (en) 2004-04-22
EP1550206A1 (en) 2005-07-06
AU2003267923A1 (en) 2004-05-04
CN1692549A (zh) 2005-11-02
KR20050053528A (ko) 2005-06-08

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