CA2495113A1 - Apparatus and method for controlling adaptive circuits - Google Patents

Apparatus and method for controlling adaptive circuits Download PDF

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Publication number
CA2495113A1
CA2495113A1 CA002495113A CA2495113A CA2495113A1 CA 2495113 A1 CA2495113 A1 CA 2495113A1 CA 002495113 A CA002495113 A CA 002495113A CA 2495113 A CA2495113 A CA 2495113A CA 2495113 A1 CA2495113 A1 CA 2495113A1
Authority
CA
Canada
Prior art keywords
signal
gain
tap
input
feed
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.)
Abandoned
Application number
CA002495113A
Other languages
English (en)
French (fr)
Inventor
James R. Blodgett
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.)
Soma Networks Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2495113A1 publication Critical patent/CA2495113A1/en
Abandoned legal-status Critical Current

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
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H03F1/3229—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction
    • H03F1/3235—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction using a pilot signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3212—Using a control circuit to adjust amplitude and phase of a signal in a signal path

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Feedback Control In General (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
CA002495113A 2001-08-13 2002-08-12 Apparatus and method for controlling adaptive circuits Abandoned CA2495113A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US31135801P 2001-08-13 2001-08-13
US60/311,358 2001-08-13
US10/016,691 US6614298B2 (en) 2001-08-13 2001-12-17 Apparatus and method for controlling adaptive circuits
US10/016,691 2001-12-17
PCT/US2002/025557 WO2003017553A2 (en) 2001-08-13 2002-08-12 Apparatus and method for controlling adaptive circuits

Publications (1)

Publication Number Publication Date
CA2495113A1 true CA2495113A1 (en) 2003-02-27

Family

ID=26688951

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002495113A Abandoned CA2495113A1 (en) 2001-08-13 2002-08-12 Apparatus and method for controlling adaptive circuits

Country Status (7)

Country Link
US (3) US6614298B2 (enExample)
EP (1) EP1476942A4 (enExample)
JP (1) JP4148892B2 (enExample)
AU (1) AU2002323115B2 (enExample)
CA (1) CA2495113A1 (enExample)
MX (1) MXPA04001433A (enExample)
WO (1) WO2003017553A2 (enExample)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6614298B2 (en) 2001-08-13 2003-09-02 Soma Networks, Inc. Apparatus and method for controlling adaptive circuits
US6771125B2 (en) * 2002-03-01 2004-08-03 Andrew Corporation Tuning feed-forward amplifiers and the like
US7110739B2 (en) * 2003-04-10 2006-09-19 Powerwave Technologies, Inc. Multi-transmitter communication system employing anti-phase pilot signals
US7656931B2 (en) 2003-12-31 2010-02-02 Ut-Battelle, Llc Hybrid spread spectrum radio system
US7038541B2 (en) * 2004-05-28 2006-05-02 Andrew Corporation Adaptive feed-forward amplifiers and the like
KR101158153B1 (ko) * 2004-09-09 2012-06-19 에이저 시스템즈 인크 다중 안테나 통신 시스템에서의 데이터 전송 방법, 다중 안테나 통신 시스템의 송신기, 다중 안테나 통신 시스템에서의 데이터 수신 방법 및 다중 안테나 통신 시스템의 수신기
US9369771B2 (en) 2007-12-18 2016-06-14 Thomson Licensing Apparatus and method for file size estimation over broadcast networks
WO2009102581A1 (en) * 2008-02-11 2009-08-20 Qualcomm Mems Technologies, Inc. Impedance sensing to determine pixel state in a passively addressed display array
US20090201282A1 (en) * 2008-02-11 2009-08-13 Qualcomm Mems Technologies, Inc Methods of tuning interferometric modulator displays
US8258800B2 (en) * 2008-02-11 2012-09-04 Qualcomm Mems Technologies, Inc. Methods for measurement and characterization of interferometric modulators
WO2009102622A2 (en) * 2008-02-11 2009-08-20 Qualcomm Mems Technologies, Inc. Methods for measurement and characterization of interferometric modulators
EP2252991A1 (en) * 2008-02-11 2010-11-24 QUALCOMM MEMS Technologies, Inc. Method and apparatus for sensing, measurement or characterization of display elements integrated with the display drive scheme, and system and applications using the same
US9331513B2 (en) * 2008-04-11 2016-05-03 Apple Inc. Adaptive surface concentration battery charging
US9893682B2 (en) * 2015-06-30 2018-02-13 Skyworks Solutions, Inc. Amplifier linearization in a radio frequency system
US9899966B2 (en) * 2016-06-16 2018-02-20 Bae Systems Information And Electronic Systems Integration Inc. Wideband high dynamic range low noise amplifier
US11997363B2 (en) * 2021-04-14 2024-05-28 Charter Communications Operating, Llc Regenerative active distributed networks
US11917260B2 (en) 2022-03-15 2024-02-27 Charter Communications Operating, Llc Transparent clock functionality in regenerative taps

Family Cites Families (23)

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Publication number Priority date Publication date Assignee Title
US1231234A (en) * 1916-05-18 1917-06-26 Ogle Construction Company Hoist mechanism.
US3471798A (en) 1967-12-26 1969-10-07 Bell Telephone Labor Inc Feed-forward amplifier
US3649927A (en) 1970-02-27 1972-03-14 Bell Telephone Labor Inc Feed-fordward amplifier
US5093668A (en) 1989-06-29 1992-03-03 Ball Corporation Multiple-beam array antenna
CA2046413C (en) 1990-07-11 1994-01-04 Shoichi Narahashi Feed-forward amplifier
JPH06154984A (ja) * 1992-11-27 1994-06-03 Hanano Shoji Kk 金型鋳造用粉末塗型剤のスプレー方法
BR9307635A (pt) * 1992-12-15 1999-08-31 British Tech Group Método e aparelho para o processamento de sinal utilizando sinais de referência
US5386198A (en) * 1993-01-28 1995-01-31 Telefonaktiebolaget L M Ericsson Linear amplifier control
US5491454A (en) 1994-10-31 1996-02-13 Motorola, Inc. Method and apparatus for reducing distortion in an output signal of an amplifier
US5870668A (en) 1995-08-18 1999-02-09 Fujitsu Limited Amplifier having distortion compensation and base station for radio communication using the same
US5768699A (en) 1995-10-20 1998-06-16 Aml Communications, Inc. Amplifier with detuned test signal cancellation for improved wide-band frequency response
US5796304A (en) 1996-04-24 1998-08-18 Powerwave Technologies, Inc. Broadband amplifier with quadrature pilot signal
DE19650388A1 (de) 1996-12-05 1998-06-18 Bosch Gmbh Robert Schaltung zur Linearisierung eines Verstärkers
US6256482B1 (en) * 1997-04-07 2001-07-03 Frederick H. Raab Power- conserving drive-modulation method for envelope-elimination-and-restoration (EER) transmitters
US5874856A (en) 1997-06-30 1999-02-23 Motorola, Inc. Feed forward amplifier
US5963091A (en) 1998-04-01 1999-10-05 Chen; Jiunn-Tsair Article comprising a power amplifier with feed forward linearizer using a RLS parameter tracking algorithm
US6166600A (en) 1998-08-31 2000-12-26 Lucent Technologies Inc. Automatic gain and phase controlled feedforward amplifier without pilot signal
US5926067A (en) 1998-09-29 1999-07-20 Lucent Technologies Inc. Sweep pilot technique for a control system that reduces distortion produced by electrical circuits
EP1014564B1 (en) 1998-12-14 2008-10-22 Ntt Mobile Communications Network Inc. Feedforward amplifier
US6236267B1 (en) * 1998-12-29 2001-05-22 International Business Machines Corporation Linearization for power amplifiers using feed-forward and feedback control
US6340915B1 (en) 2000-11-20 2002-01-22 Soma Networks, Inc. Feed forward amplifier
US6901108B2 (en) 2001-05-04 2005-05-31 Lucent Technologies Inc. Apparatus and method for adaptive control
US6614298B2 (en) 2001-08-13 2003-09-02 Soma Networks, Inc. Apparatus and method for controlling adaptive circuits

Also Published As

Publication number Publication date
JP2005500738A (ja) 2005-01-06
MXPA04001433A (es) 2005-10-05
JP4148892B2 (ja) 2008-09-10
WO2003017553A2 (en) 2003-02-27
US7538632B2 (en) 2009-05-26
US20070176678A1 (en) 2007-08-02
AU2002323115B2 (en) 2008-11-20
EP1476942A4 (en) 2005-01-05
US6614298B2 (en) 2003-09-02
US7218172B2 (en) 2007-05-15
US20030034834A1 (en) 2003-02-20
WO2003017553A3 (en) 2003-04-03
US20050040888A1 (en) 2005-02-24
EP1476942A2 (en) 2004-11-17

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued