WO2006016973A3 - A feed forward amplifier with multiple cancellation loops capable of reducing intermodulation distortion and receive band noise - Google Patents

A feed forward amplifier with multiple cancellation loops capable of reducing intermodulation distortion and receive band noise Download PDF

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Publication number
WO2006016973A3
WO2006016973A3 PCT/US2005/021778 US2005021778W WO2006016973A3 WO 2006016973 A3 WO2006016973 A3 WO 2006016973A3 US 2005021778 W US2005021778 W US 2005021778W WO 2006016973 A3 WO2006016973 A3 WO 2006016973A3
Authority
WO
WIPO (PCT)
Prior art keywords
cancellation loops
feed forward
forward amplifier
intermodulation distortion
band noise
Prior art date
Application number
PCT/US2005/021778
Other languages
French (fr)
Other versions
WO2006016973A2 (en
Inventor
Khosro Shamsaifar
Original Assignee
Paratek Microwave Inc
Khosro Shamsaifar
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 Paratek Microwave Inc, Khosro Shamsaifar filed Critical Paratek Microwave Inc
Publication of WO2006016973A2 publication Critical patent/WO2006016973A2/en
Publication of WO2006016973A3 publication Critical patent/WO2006016973A3/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
    • H03F1/32—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
    • 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
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
    • H04B1/126—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means having multiple inputs, e.g. auxiliary antenna for receiving interfering signal

Abstract

An embodiment of the present invention provides an apparatus, comprising a feed forward amplifier capable of receiving an input signal and including a plurality of cancellation loops, wherein at least one of the cancellation loops includes a tunable delay line enabling the reduction of intermodulation distortion and receive band noise when outputs from the plurality of cancellation loops are combined with the input signal to the feed forward amplifier. In an embodiment of the present invention the plurality of cancellation loops may be two cancellations loops and a tunable delay line may be included in both of the cancellation loops. Further, the tunable delay line may be a voltage tunable delay line that includes a voltage tunable dielectric capacitor to facilitate the control of the tunable delay and the voltage tunable dielectric capacitor may include a layer of voltage tunable dielectric material positioned on a surface of a low loss, low dielectric substrate.
PCT/US2005/021778 2004-07-08 2005-06-21 A feed forward amplifier with multiple cancellation loops capable of reducing intermodulation distortion and receive band noise WO2006016973A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58643704P 2004-07-08 2004-07-08
US60/586,437 2004-07-08

Publications (2)

Publication Number Publication Date
WO2006016973A2 WO2006016973A2 (en) 2006-02-16
WO2006016973A3 true WO2006016973A3 (en) 2006-12-14

Family

ID=35839696

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2005/021928 WO2006016980A2 (en) 2004-07-08 2005-06-20 Method and apparatus capable of interference cancellation
PCT/US2005/021778 WO2006016973A2 (en) 2004-07-08 2005-06-21 A feed forward amplifier with multiple cancellation loops capable of reducing intermodulation distortion and receive band noise

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2005/021928 WO2006016980A2 (en) 2004-07-08 2005-06-20 Method and apparatus capable of interference cancellation

Country Status (2)

Country Link
US (2) US20060009185A1 (en)
WO (2) WO2006016980A2 (en)

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US7904047B2 (en) * 2007-10-31 2011-03-08 Broadcom Corporation Radio frequency filtering technique with auto calibrated stop-band rejection
US8306480B2 (en) * 2008-01-22 2012-11-06 Texas Instruments Incorporated System and method for transmission interference cancellation in full duplex transceiver
CN103199808B (en) * 2013-02-07 2016-05-04 武汉凡谷电子技术股份有限公司 A kind of intermodulation canceller for passive device
US9425840B2 (en) * 2013-04-26 2016-08-23 Northrop Grumman Systems Corporation Wideband tunable notch cancellation
CN103490734B (en) * 2013-07-26 2016-01-20 江苏科技大学 A kind of device of offsetting resistive feedback power current amplifier input stage thermal noise
CN103700953A (en) * 2013-11-30 2014-04-02 成都天奥信息科技有限公司 Wide-beam dual-mode antenna for satellite phones
US9654983B2 (en) * 2014-04-03 2017-05-16 North Carolina State University Tunable filter employing feedforward cancellation
CN105515606B (en) * 2014-09-24 2018-07-10 南宁富桂精密工业有限公司 Reduction circuit and transmission circuit
JP6128171B2 (en) * 2015-07-09 2017-05-17 栗田工業株式会社 Cooling discharge water recovery method and recovery device
US9800278B2 (en) 2015-09-04 2017-10-24 North Carolina State University Tunable filters, cancellers, and duplexers based on passive mixers
US9847892B2 (en) 2016-01-22 2017-12-19 International Business Machines Corporation Embedded wire feed forward equalization
CN107947755B (en) 2016-10-11 2021-06-29 康普技术有限责任公司 Energy absorption circuit
US10235987B1 (en) * 2018-02-23 2019-03-19 GM Global Technology Operations LLC Method and apparatus that cancel component noise using feedforward information
EP3565135B8 (en) * 2018-04-30 2022-06-22 Rohde & Schwarz GmbH & Co. KG System and method for inverting a radio channel for broadband signals
CN110729545B (en) * 2018-07-17 2022-03-11 康普技术有限责任公司 Coupler for communication system

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US6958647B2 (en) * 2003-11-25 2005-10-25 Powerwave Technologies, Inc. Dual loop feedforward power amplifier

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US5977826A (en) * 1998-03-13 1999-11-02 Behan; Scott T. Cascaded error correction in a feed forward amplifier
US6211733B1 (en) * 1999-10-22 2001-04-03 Powerwave Technologies, Inc. Predistortion compensation for a power amplifier
US20030199257A1 (en) * 2001-09-28 2003-10-23 Wilkinson Ross James Spurious energy correlation for control of linear power amplifiers
US6958647B2 (en) * 2003-11-25 2005-10-25 Powerwave Technologies, Inc. Dual loop feedforward power amplifier

Also Published As

Publication number Publication date
WO2006016973A2 (en) 2006-02-16
WO2006016980A2 (en) 2006-02-16
US20060009172A1 (en) 2006-01-12
US20060009185A1 (en) 2006-01-12
WO2006016980A3 (en) 2006-07-20

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