CA2161901A1 - A Method for a Transmitter to Compensate for Varying Loading Without an Isolator - Google Patents

A Method for a Transmitter to Compensate for Varying Loading Without an Isolator

Info

Publication number
CA2161901A1
CA2161901A1 CA2161901A CA2161901A CA2161901A1 CA 2161901 A1 CA2161901 A1 CA 2161901A1 CA 2161901 A CA2161901 A CA 2161901A CA 2161901 A CA2161901 A CA 2161901A CA 2161901 A1 CA2161901 A1 CA 2161901A1
Authority
CA
Canada
Prior art keywords
isolator
transmitter
compensate
gain
varying loading
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.)
Granted
Application number
CA2161901A
Other languages
French (fr)
Other versions
CA2161901C (en
Inventor
Lawrence Francis Cygan
Paul Howe Gailus
William Joseph Turney
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.)
Google Technology Holdings LLC
Original Assignee
Lawrence Francis Cygan
Paul Howe Gailus
William Joseph Turney
Motorola, Inc.
Motorola Mobility, Inc.
Motorola Mobility Llc
Google Technology Holdings LLC
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 Lawrence Francis Cygan, Paul Howe Gailus, William Joseph Turney, Motorola, Inc., Motorola Mobility, Inc., Motorola Mobility Llc, Google Technology Holdings LLC filed Critical Lawrence Francis Cygan
Priority to CA002323915A priority Critical patent/CA2323915A1/en
Publication of CA2161901A1 publication Critical patent/CA2161901A1/en
Application granted granted Critical
Publication of CA2161901C publication Critical patent/CA2161901C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3294—Acting on the real and imaginary components of the input signal
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/345—Negative-feedback-circuit arrangements with or without positive feedback using hybrid or directional couplers
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/57—Separate feedback of real and complex signals being present
    • 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
    • H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
    • 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
    • H04B2001/0433—Circuits with power amplifiers with linearisation using feedback

Abstract

A transmitter (100) that includes an amplifying element (107), an antenna (109), a gain stage (104, 105), and a closed loop feedback may compensate for varying antenna loads without an isolator. This may be accomplished by determining the effects of the varying loading on overall loop gain. Knowing the effects, the transmitter adjusts the gain of the gain stage to maintain a constant overall loop gain, thus eliminating the need for an isolator.
CA002161901A 1993-06-24 1994-06-03 A method for a transmitter to compensate for varying loading without an isolator Expired - Lifetime CA2161901C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002323915A CA2323915A1 (en) 1993-06-24 1994-06-03 A method for a transmitter to compensate for varying loading without an isolator

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/080,635 US5423082A (en) 1993-06-24 1993-06-24 Method for a transmitter to compensate for varying loading without an isolator
US08/080,635 1993-06-24
PCT/US1994/006268 WO1995001009A1 (en) 1993-06-24 1994-06-03 A method for a transmitter to compensate for varying loading without an isolator

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002323915A Division CA2323915A1 (en) 1993-06-24 1994-06-03 A method for a transmitter to compensate for varying loading without an isolator

Publications (2)

Publication Number Publication Date
CA2161901A1 true CA2161901A1 (en) 1995-01-05
CA2161901C CA2161901C (en) 2001-02-20

Family

ID=22158623

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002161901A Expired - Lifetime CA2161901C (en) 1993-06-24 1994-06-03 A method for a transmitter to compensate for varying loading without an isolator

Country Status (7)

Country Link
US (2) US5423082A (en)
EP (2) EP1239597B1 (en)
CN (1) CN1046385C (en)
AT (2) ATE293852T1 (en)
CA (1) CA2161901C (en)
DE (2) DE69434350T2 (en)
WO (1) WO1995001009A1 (en)

Families Citing this family (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286302B (en) * 1994-01-29 1998-12-16 Motorola Inc Power amplifier and radio transmitter
US5574992A (en) * 1994-04-29 1996-11-12 Motorola, Inc. Method and apparatus for reducing off-channel interference produced by a linear transmitter
US5564087A (en) * 1994-11-03 1996-10-08 Motorola, Inc. Method and apparatus for a linear transmitter
GB2301247A (en) * 1995-05-22 1996-11-27 Univ Bristol A cartesian loop transmitter amplifier
US5974041A (en) * 1995-12-27 1999-10-26 Qualcomm Incorporated Efficient parallel-stage power amplifier
US5694431A (en) * 1996-01-17 1997-12-02 Motorola, Inc. Method and apparatus for average power control
JP3309271B2 (en) * 1996-07-09 2002-07-29 京セラ株式会社 Mobile terminal
US5901346A (en) * 1996-12-11 1999-05-04 Motorola, Inc. Method and apparatus utilizing a compensated multiple output signal source
US6018650A (en) * 1996-12-18 2000-01-25 Aironet Wireless Communications, Inc. Cellular communication devices with automated power level adjust
US6414562B1 (en) 1997-05-27 2002-07-02 Motorola, Inc. Circuit and method for impedance matching
US6215986B1 (en) * 1997-09-26 2001-04-10 Nortel Networks Corporation Reducing radio transmitter distortion
US6618096B1 (en) 1997-09-29 2003-09-09 Scientific-Atlanta, Inc. System and method for adaptively balancing quadrature modulators for vestigial-sideband generation
US6069526A (en) * 1998-08-04 2000-05-30 Qualcomm Incorporated Partial or complete amplifier bypass
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US6091940A (en) 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6052568A (en) * 1998-08-24 2000-04-18 Celeritek Apparatus and method for efficiently implementing a satellite transceiver system
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US6252456B1 (en) 1999-07-29 2001-06-26 Motorola, Inc. Power amplifier load controller and method for controlling a power amplifier load
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US6529716B1 (en) * 2000-01-11 2003-03-04 Skyworks Solutions, Inc. RF transmitter with extended efficient power control range
GB2359680B (en) * 2000-02-25 2002-05-15 Motorola Israel Ltd Apparatus for linear transmitter with improved loop gain stabilization
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US6362690B1 (en) 2000-04-19 2002-03-26 Ophir Rf, Inc. System and method for closed loop VSWR correction and tuning in RF power amplifiers
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US7065154B2 (en) * 2000-12-29 2006-06-20 Nokia Corporation Baseband predistortion method for multicarrier transmitters
US6745015B2 (en) * 2001-02-08 2004-06-01 Motorola, Inc. Method for automatic carrier suppression tuning of a wireless communication device
JP3880329B2 (en) * 2001-04-20 2007-02-14 株式会社日立国際電気 Loop gain control method and power amplifier circuit
EP1267484B1 (en) * 2001-06-14 2008-06-04 Alcatel Lucent Circuit and method for providing a RF signal with pre-distortion
US6850119B2 (en) 2001-08-31 2005-02-01 Rf Micro Devices, Inc. Power amplifier overload protection
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US20030114182A1 (en) * 2001-12-19 2003-06-19 Chan Paul L. Adaptive power amplifier
DE60236689D1 (en) * 2002-03-07 2010-07-22 Nokia Corp POWER CONTROL DEVICE AND METHOD FOR CALIBRATING THE PERFORMANCE OF A TRANSMITTER OR RECEIVER IN A MOBILE COMMUNICATION NETWORK
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US7010278B2 (en) * 2002-10-25 2006-03-07 Freescale Semiconductor, Inc. Sideband suppression method and apparatus for quadrature modulator using magnitude measurements
AU2003285621A1 (en) * 2002-12-12 2004-06-30 Koninklijke Philips Electronics N.V. Preserving linearity of an isolator-free power amplifier by dynamically adjusting gain and phase
US7408404B2 (en) * 2002-12-12 2008-08-05 Nxp B.V. Preserving linearity of an isolator-free power amplifier by dynamically switching active devices
US7127220B2 (en) * 2002-12-23 2006-10-24 Spectrasite Communications Inc Apparatus and method to monitor and control power
GB2403613B (en) * 2003-07-04 2005-07-06 Motorola Inc Cartesian loop transmitter and method of adjusting an output level of such transmitter
DE102004026168A1 (en) * 2004-05-28 2005-12-22 Siemens Ag Adjustment method for obtaining desired radiation performance for antenna of radio communication equipment involves selecting performance booster with highest efficiency for particular performance class from several performance boosters
US20060148430A1 (en) * 2004-12-30 2006-07-06 Motorola, Inc. Power management of a transmitter and supporting methods and apparatus
US7346317B2 (en) * 2005-04-04 2008-03-18 Freescale Semiconductor, Inc. Dynamic gain and phase compensation for power amplifier load switching
US20080003962A1 (en) * 2006-06-30 2008-01-03 Wai Lim Ngai Method and apparatus for providing adaptive supply voltage control of a power amplifier
US8606200B2 (en) * 2007-06-26 2013-12-10 Intel Corporation Error vector magnitude control within a linear transmitter
DE102007061453B4 (en) * 2007-12-20 2015-07-23 Intel Mobile Communications GmbH Method for calibrating a transmitter and radio transmitter
US8351874B2 (en) * 2008-04-08 2013-01-08 Telefonaktiebolaget Lm Ericsson (Publ) System and method for adaptive antenna impedance matching
US8536950B2 (en) * 2009-08-03 2013-09-17 Qualcomm Incorporated Multi-stage impedance matching
US8102205B2 (en) 2009-08-04 2012-01-24 Qualcomm, Incorporated Amplifier module with multiple operating modes
JP5499794B2 (en) * 2010-03-15 2014-05-21 富士通株式会社 Power amplifier
JP5643785B2 (en) * 2012-06-15 2014-12-17 株式会社東芝 Digital broadcast transmitter and exciter
TWI508463B (en) * 2013-04-16 2015-11-11 Realtek Semiconductor Corp Wireless transmission system, and method for determining default gain thereof
CN104113382B (en) * 2013-04-22 2016-08-03 瑞昱半导体股份有限公司 Wireless transmitting system and determine the method for preset gain of wireless transmitting system
BR112018002411A2 (en) 2015-08-06 2018-09-18 Huntsman Int Llc synthesis method for making an isocyanate-based organic xerogel, and use of isocyanate-based organic xerogel
CN106253182B (en) * 2015-12-09 2019-02-19 深圳金达伸机房设备工程有限公司 A kind of bus-bar system jack box
US9900735B2 (en) * 2015-12-18 2018-02-20 Federal Signal Corporation Communication systems
US10367535B2 (en) * 2017-12-15 2019-07-30 Motorola Solutions, Inc. Cartesian loop circuits, transmitters, devices, and related methods

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641451A (en) * 1970-02-24 1972-02-08 Motorola Inc Amplifier protection circuit
DE2710752A1 (en) * 1977-03-11 1978-09-14 Rohde & Schwarz Power regulator for RF communications transmitter - uses directional coupler to automatically reduce transmitter power as mismatch to load increases
GB2233515B (en) * 1989-06-20 1993-12-15 Technophone Ltd Levelling control circuit
US4933986A (en) * 1989-08-25 1990-06-12 Motorola, Inc. Gain/phase compensation for linear amplifier feedback loop
US5066922A (en) * 1989-10-16 1991-11-19 Motorola, Inc. Stabilizing circuit for feedback RF amplifier
US5021753A (en) * 1990-08-03 1991-06-04 Motorola, Inc. Splatter controlled amplifier
US5041793A (en) * 1990-10-31 1991-08-20 Motorola, Inc. Controlled slew rate amplifier
US5066923A (en) * 1990-10-31 1991-11-19 Motorola, Inc. Linear transmitter training method and apparatus
US5134718A (en) * 1990-10-31 1992-07-28 Motorola, Inc. Fast phase shift adjusting method and device for linear transmitter
JPH0480140U (en) * 1990-11-26 1992-07-13
US5175879A (en) * 1991-04-25 1992-12-29 Motorola, Inc. Linear amplifier with feedback path and phase error compensation
US5287555A (en) * 1991-07-22 1994-02-15 Motorola, Inc. Power control circuitry for a TDMA radio frequency transmitter
US5303394A (en) * 1991-08-09 1994-04-12 Rockwell International Feedback stabilized Q multiplier filter circuit
US5196808A (en) * 1991-12-02 1993-03-23 Motorola, Inc. RF amplifier protector and method
US5371481A (en) * 1993-03-24 1994-12-06 Nokia Mobile Phones Ltd. Tuning techniques for I/Q channel signals in microwave digital transmission systems

Also Published As

Publication number Publication date
DE69431522D1 (en) 2002-11-14
CA2161901C (en) 2001-02-20
ATE293852T1 (en) 2005-05-15
EP1239597B1 (en) 2005-04-20
DE69434350T2 (en) 2005-09-22
CN1125497A (en) 1996-06-26
EP0710411A4 (en) 2000-04-12
US5542096A (en) 1996-07-30
EP0710411B1 (en) 2002-10-09
DE69434350D1 (en) 2005-05-25
US5423082A (en) 1995-06-06
CN1046385C (en) 1999-11-10
EP1239597A1 (en) 2002-09-11
EP0710411A1 (en) 1996-05-08
ATE225991T1 (en) 2002-10-15
DE69431522T2 (en) 2003-02-20
WO1995001009A1 (en) 1995-01-05

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EEER Examination request
MKEX Expiry

Effective date: 20140603