TW286455B - - Google Patents

Info

Publication number
TW286455B
TW286455B TW084109894A TW84109894A TW286455B TW 286455 B TW286455 B TW 286455B TW 084109894 A TW084109894 A TW 084109894A TW 84109894 A TW84109894 A TW 84109894A TW 286455 B TW286455 B TW 286455B
Authority
TW
Taiwan
Application number
TW084109894A
Original Assignee
Nippon Electric Co
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 Nippon Electric Co filed Critical Nippon Electric Co
Application granted granted Critical
Publication of TW286455B publication Critical patent/TW286455B/zh

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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3282—Acting on the phase and the amplitude of the input signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
    • H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/102—A non-specified detector of a signal envelope being used in an amplifying circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
TW084109894A 1994-09-30 1995-09-21 TW286455B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6236314A JP2964883B2 (ja) 1994-09-30 1994-09-30 送信器

Publications (1)

Publication Number Publication Date
TW286455B true TW286455B (zh) 1996-09-21

Family

ID=16998968

Family Applications (1)

Application Number Title Priority Date Filing Date
TW084109894A TW286455B (zh) 1994-09-30 1995-09-21

Country Status (7)

Country Link
US (1) US5553318A (zh)
EP (1) EP0705010B1 (zh)
JP (1) JP2964883B2 (zh)
CN (1) CN1097924C (zh)
AU (1) AU689309B2 (zh)
DE (2) DE69519839T2 (zh)
TW (1) TW286455B (zh)

Families Citing this family (31)

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Publication number Priority date Publication date Assignee Title
US6141541A (en) * 1997-12-31 2000-10-31 Motorola, Inc. Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals
US6519293B1 (en) * 1998-06-03 2003-02-11 Mitsubishi Denki Kabushiki Kaisha Radio transmitter and radio communication method
US6335767B1 (en) * 1998-06-26 2002-01-01 Harris Corporation Broadcast transmission system with distributed correction
AU5913599A (en) * 1998-09-09 2000-03-27 Ortel Corporation Electronic circuit for correcting cross modulation distortion
US6133792A (en) * 1998-09-17 2000-10-17 Telefonakteibolaget Lm Ericsson Method and apparatus for preventing power amplifier saturation
US6101224A (en) * 1998-10-07 2000-08-08 Telefonaktiebolaget Lm Ericsson Method and apparatus for generating a linearly modulated signal using polar modulation
FI982561A (fi) 1998-11-26 2000-05-27 Nokia Networks Oy Tehonsäätömenetelmä ja tehonsäätöjärjestelmä
JP3866042B2 (ja) 1999-03-01 2007-01-10 三菱電機株式会社 送信電力制御装置および送信電力制御方法
US6349216B1 (en) * 1999-07-22 2002-02-19 Motorola, Inc. Load envelope following amplifier system
US7409195B2 (en) * 2000-09-08 2008-08-05 Nebo Wireless, Llc Wireless modem
US6751474B1 (en) 2000-09-26 2004-06-15 Nebo Wireless, Llc Wireless modem
GB2370435A (en) * 2000-12-22 2002-06-26 Nokia Mobile Phones Ltd A polar loop transmitter for a mobile phone
US6701138B2 (en) * 2001-06-11 2004-03-02 Rf Micro Devices, Inc. Power amplifier control
US6724252B2 (en) * 2002-02-21 2004-04-20 Rf Micro Devices, Inc. Switched gain amplifier circuit
US6741840B2 (en) * 2002-03-13 2004-05-25 Motorola, Inc. RF transmitters with saturation detection and correction and methods therefor
US20040070454A1 (en) * 2002-10-15 2004-04-15 Triquint Semiconductor, Inc. Continuous bias circuit and method for an amplifier
US6701134B1 (en) 2002-11-05 2004-03-02 Rf Micro Devices, Inc. Increased dynamic range for power amplifiers used with polar modulation
US20040087321A1 (en) 2002-11-06 2004-05-06 Ernie Lin Circuitry to establish a wireless communication link
US7126999B2 (en) 2003-08-11 2006-10-24 Telefonaktiebolaget Lm Ericsson (Publ) Pseudo-polar modulation for radio transmitters
US20050181746A1 (en) * 2004-02-13 2005-08-18 Icefyre Semiconductor Corporation Methods and systems for signal amplification through envelope removal and restoration
US7109791B1 (en) 2004-07-09 2006-09-19 Rf Micro Devices, Inc. Tailored collector voltage to minimize variation in AM to PM distortion in a power amplifier
JP4517886B2 (ja) 2005-02-25 2010-08-04 日本電気株式会社 送信出力制御装置及びその方法並びにそれを用いた送信機
US7336127B2 (en) * 2005-06-10 2008-02-26 Rf Micro Devices, Inc. Doherty amplifier configuration for a collector controlled power amplifier
US7330071B1 (en) 2005-10-19 2008-02-12 Rf Micro Devices, Inc. High efficiency radio frequency power amplifier having an extended dynamic range
US7680468B2 (en) * 2007-05-30 2010-03-16 Sige Semiconductor Inc. Method and apparatus for distortion correction of RF amplifiers
FI20075393A0 (fi) * 2007-05-30 2007-05-30 Nokia Corp Tiedonvälitysmenetelmä, laite ja moduuli
CN103336450B (zh) * 2013-06-09 2015-07-29 广东宽普科技股份有限公司 一种基于功放自动测试系统的控制方法
CN103501204B (zh) * 2013-10-08 2016-01-27 上海航天测控通信研究所 一种x波段输出功率遥测采集装置
CN103954956B (zh) * 2014-05-21 2017-05-03 西安空间无线电技术研究所 一种自适应四端口对消网络结构及自适应对消方法
CN110057456B (zh) * 2019-04-22 2024-08-16 北京科益虹源光电技术有限公司 一种用于准分子激光器的脉冲能量测量方法及测量电路
CN114759884A (zh) * 2022-04-05 2022-07-15 成都浩翼创想科技有限公司 双模功率放大器输出功率测试系统及其构成的alc电平控制/驻波保护系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054116A (en) * 1989-09-29 1991-10-01 Hewlett-Packard Company Feed-forward automatic level control circuit for a high-frequency source
JPH04103207A (ja) * 1990-08-22 1992-04-06 Mitsubishi Electric Corp リニア変調波自動電力制御装置
JPH04287457A (ja) 1991-03-16 1992-10-13 Hitachi Denshi Ltd 電力増幅器の位相補償方式

Also Published As

Publication number Publication date
EP0705010A1 (en) 1996-04-03
EP0705010B1 (en) 2001-01-10
AU689309B2 (en) 1998-03-26
DE69519839D1 (de) 2001-02-15
AU3294395A (en) 1996-04-18
DE69519839T2 (de) 2001-08-02
JPH08102767A (ja) 1996-04-16
CN1128924A (zh) 1996-08-14
DE705010T1 (de) 1996-08-29
US5553318A (en) 1996-09-03
JP2964883B2 (ja) 1999-10-18
CN1097924C (zh) 2003-01-01

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