HK1080308A1 - Gain compensation over temperature and frequency variations in wireless transceivers - Google Patents

Gain compensation over temperature and frequency variations in wireless transceivers

Info

Publication number
HK1080308A1
HK1080308A1 HK05110138A HK05110138A HK1080308A1 HK 1080308 A1 HK1080308 A1 HK 1080308A1 HK 05110138 A HK05110138 A HK 05110138A HK 05110138 A HK05110138 A HK 05110138A HK 1080308 A1 HK1080308 A1 HK 1080308A1
Authority
HK
Hong Kong
Prior art keywords
gain
signal
over temperature
frequency variations
compensation over
Prior art date
Application number
HK05110138A
Other languages
English (en)
Inventor
Steven P Morton
Jiao Qing Zhong
Jin Xin
Original Assignee
Research In Motion 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 Research In Motion Ltd filed Critical Research In Motion Ltd
Publication of HK1080308A1 publication Critical patent/HK1080308A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/04—Modifications of control circuit to reduce distortion caused by control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices

Landscapes

  • Transceivers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Transmitters (AREA)
HK05110138A 2002-12-04 2005-11-11 Gain compensation over temperature and frequency variations in wireless transceivers HK1080308A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43095502P 2002-12-04 2002-12-04
PCT/CA2003/001884 WO2004051846A2 (en) 2002-12-04 2003-12-02 Gain compensation over temperature and frequency variations in wireless transceivers

Publications (1)

Publication Number Publication Date
HK1080308A1 true HK1080308A1 (en) 2006-04-21

Family

ID=32469570

Family Applications (1)

Application Number Title Priority Date Filing Date
HK05110138A HK1080308A1 (en) 2002-12-04 2005-11-11 Gain compensation over temperature and frequency variations in wireless transceivers

Country Status (8)

Country Link
US (1) US7356102B2 (de)
EP (1) EP1570571B1 (de)
AT (1) ATE355650T1 (de)
AU (1) AU2003291864A1 (de)
CA (1) CA2508671C (de)
DE (1) DE60312213T2 (de)
HK (1) HK1080308A1 (de)
WO (1) WO2004051846A2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7720469B2 (en) * 2005-12-29 2010-05-18 Nokia Corporation Frequency calibration of wireless telecommunication device
US8670356B1 (en) * 2006-11-09 2014-03-11 Broadcom Corporation Fast frequency hopping full-duplex radio
US7639082B2 (en) * 2007-07-24 2009-12-29 Texas Instruments Incorporated System and method for amplifier gain measurement and compensation
JP5006759B2 (ja) * 2007-10-29 2012-08-22 Ｈｏｙａ株式会社 電子内視鏡用信号処理装置および電子内視鏡装置
WO2010026445A1 (en) 2008-09-03 2010-03-11 Freescale Semiconductor, Inc. Wireless communication unit, integrated circuit and method of power control of a power amplifier therefor
US8750525B2 (en) * 2010-01-28 2014-06-10 Harris Corporation Method to maximize loudspeaker sound pressure level with a high peak to average power ratio audio source
US9264077B2 (en) 2012-05-31 2016-02-16 Blackberry Limited Mobile communications device including an RF transmitter providing impedance fluctuation dampening and related methods
FR3023998B1 (fr) 2014-07-18 2018-03-23 Thales Sa Procede de compensation numerique des variations, en fonction de la temperature, d'une grandeur electrique d'un equipement de telecommunications radiofrequence spatial embarque
GB2534949B (en) 2015-02-02 2017-05-10 Cirrus Logic Int Semiconductor Ltd Loudspeaker protection
CN106687023B (zh) 2015-08-13 2018-12-18 Hoya株式会社 评价值计算装置以及电子内窥镜***
WO2017026539A1 (ja) 2015-08-13 2017-02-16 Hoya株式会社 評価値計算装置及び電子内視鏡システム

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2151533A5 (de) * 1971-09-01 1973-04-20 Inst Francais Du Petrole
JPS55158715A (en) * 1979-05-29 1980-12-10 Sony Corp Gain control circuit
JPH02285817A (ja) 1989-04-27 1990-11-26 Nec Corp 無線送信機
KR0133338B1 (ko) * 1994-12-16 1998-04-21 양승택 위성중계기용 디지털 자동이득제어장치
CA2163692C (en) * 1995-11-24 2001-08-07 Claude Belisle Design of an electronic beam forming network for phased array applications
US5982824A (en) * 1995-12-18 1999-11-09 Lucent Technologies, Inc. Method and apparatus for automatic gain control
KR100212576B1 (ko) 1997-01-31 1999-08-02 윤종용 페이징송신기에서 주파수 및 온도 변환에 따른 무선신호 전력제어방법
US6639983B1 (en) * 1998-01-20 2003-10-28 Intel Corporation Adaptable line driver interface for digital telephone systems
JP3314724B2 (ja) * 1998-06-02 2002-08-12 日本電気株式会社 電力増幅回路および電力自動制御方法
US6480061B2 (en) * 1999-01-13 2002-11-12 Nortel Networks Limited Amplifier having digital micro processor control apparatus
US6498471B2 (en) * 1999-05-04 2002-12-24 A. Clifford Barker Apparatus and method for direct digital measurement of electrical properties of passive components
US6418301B1 (en) 1999-08-04 2002-07-09 Harris Corporation Methods for radio calibration at room temperature
JP4342743B2 (ja) * 2001-04-18 2009-10-14 富士通株式会社 線形増幅器
JP4642272B2 (ja) * 2001-05-29 2011-03-02 パナソニック株式会社 送信出力補正装置
US7076201B2 (en) * 2002-09-05 2006-07-11 Xytrans, Inc. Low cost VSAT MMIC transceiver with automatic power control

Also Published As

Publication number Publication date
EP1570571B1 (de) 2007-02-28
DE60312213T2 (de) 2007-10-31
CA2508671C (en) 2010-05-11
ATE355650T1 (de) 2006-03-15
US20040213355A1 (en) 2004-10-28
US7356102B2 (en) 2008-04-08
WO2004051846A2 (en) 2004-06-17
AU2003291864A1 (en) 2004-06-23
AU2003291864A8 (en) 2004-06-23
WO2004051846A3 (en) 2004-10-28
DE60312213D1 (de) 2007-04-12
CA2508671A1 (en) 2004-06-17
EP1570571A2 (de) 2005-09-07

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Legal Events

Date Code Title Description
PE Patent expired

Effective date: 20231204