AU2001237655A1 - Apparatus for linear transmitter with improved loop gain stabilization - Google Patents

Apparatus for linear transmitter with improved loop gain stabilization

Info

Publication number
AU2001237655A1
AU2001237655A1 AU2001237655A AU3765501A AU2001237655A1 AU 2001237655 A1 AU2001237655 A1 AU 2001237655A1 AU 2001237655 A AU2001237655 A AU 2001237655A AU 3765501 A AU3765501 A AU 3765501A AU 2001237655 A1 AU2001237655 A1 AU 2001237655A1
Authority
AU
Australia
Prior art keywords
loop gain
linear transmitter
gain stabilization
improved loop
improved
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
AU2001237655A
Inventor
Moshe Ben-Ayun
Mark Rozental
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.)
Motorola Solutions Israel Ltd
Original Assignee
Motorola Israel 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 Motorola Israel Ltd filed Critical Motorola Israel Ltd
Publication of AU2001237655A1 publication Critical patent/AU2001237655A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
AU2001237655A 2000-02-25 2001-02-26 Apparatus for linear transmitter with improved loop gain stabilization Abandoned AU2001237655A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0004557A GB2359680B (en) 2000-02-25 2000-02-25 Apparatus for linear transmitter with improved loop gain stabilization
GB0004557 2000-02-25
PCT/IB2001/000254 WO2001063792A2 (en) 2000-02-25 2001-02-26 Apparatus for linear transmitter with improved loop gain stabilization

Publications (1)

Publication Number Publication Date
AU2001237655A1 true AU2001237655A1 (en) 2001-09-03

Family

ID=9886455

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001237655A Abandoned AU2001237655A1 (en) 2000-02-25 2001-02-26 Apparatus for linear transmitter with improved loop gain stabilization

Country Status (5)

Country Link
US (1) US7095988B2 (en)
EP (1) EP1260024A2 (en)
AU (1) AU2001237655A1 (en)
GB (1) GB2359680B (en)
WO (1) WO2001063792A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2403086B (en) 2003-06-17 2005-07-20 Motorola Inc Cartesian loop transmitter and method of adjusting an output level of such transmitter
GB2403613B (en) * 2003-07-04 2005-07-06 Motorola Inc Cartesian loop transmitter and method of adjusting an output level of such transmitter
US7657237B2 (en) * 2005-12-07 2010-02-02 Cisco Technology, Inc. Method and system to improve transmitter linearization
US7504879B2 (en) * 2006-08-24 2009-03-17 Itt Manufacturing Enterprises, Inc. Transconductor and filter circuit
US7974596B2 (en) * 2006-09-22 2011-07-05 Silicon Laboratories Inc. Power control scheme for a power amplifier
US20100022209A1 (en) * 2008-07-25 2010-01-28 Motorola, Inc Method and apparatus for reducing peak current variation in a radio
US8160514B2 (en) * 2008-07-25 2012-04-17 Qualcomm, Incorporated Transmission noise cancellation
US8471629B2 (en) 2011-06-30 2013-06-25 Silicon Laboratories Inc Providing automatic power control for a power amplifier
KR101787761B1 (en) * 2011-08-09 2017-10-18 삼성전자주식회사 Rf amplifier
US8670730B2 (en) * 2011-08-24 2014-03-11 Spectralux Corporation Power efficient radio frequency transmitter

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2826003B2 (en) * 1991-11-29 1998-11-18 松下電器産業株式会社 Transmission output control circuit
US5420536A (en) * 1993-03-16 1995-05-30 Victoria University Of Technology Linearized power amplifier
US5423082A (en) * 1993-06-24 1995-06-06 Motorola, Inc. Method for a transmitter to compensate for varying loading without an isolator
GB9316869D0 (en) * 1993-08-13 1993-09-29 Philips Electronics Uk Ltd Transmitter and power amplifier therefor
GB9320078D0 (en) * 1993-09-29 1993-11-17 Linear Modulation Tech Cartesian amplifier power control and related applications
US5564087A (en) * 1994-11-03 1996-10-08 Motorola, Inc. Method and apparatus for a linear transmitter
JPH08316756A (en) * 1995-05-22 1996-11-29 Saitama Nippon Denki Kk Transmission output control system
US5673001A (en) * 1995-06-07 1997-09-30 Motorola, Inc. Method and apparatus for amplifying a signal
US5675286A (en) * 1996-02-12 1997-10-07 Motorola, Inc. Method and apparatus for an improved linear transmitter
JP3180682B2 (en) * 1996-09-19 2001-06-25 日本電気株式会社 Receiving machine
US5901346A (en) * 1996-12-11 1999-05-04 Motorola, Inc. Method and apparatus utilizing a compensated multiple output signal source
US5933767A (en) * 1997-09-15 1999-08-03 Motorola, Inc. Apparatus and method for tuning the gain of a transmitter utilizing cartesian feedback
US6438360B1 (en) * 1999-07-22 2002-08-20 Motorola, Inc. Amplifier system with load control to produce an amplitude envelope
US6252456B1 (en) * 1999-07-29 2001-06-26 Motorola, Inc. Power amplifier load controller and method for controlling a power amplifier load
US6384677B2 (en) * 2000-01-28 2002-05-07 Hitachi Kokusai Electric Inc. Power amplifier having negative feedback circuit for transmitter
US6606483B1 (en) * 2000-10-10 2003-08-12 Motorola, Inc. Dual open and closed loop linear transmitter
US6731694B2 (en) * 2001-08-07 2004-05-04 Motorola, Inc. Isolator eliminator for a linear transmitter

Also Published As

Publication number Publication date
WO2001063792A2 (en) 2001-08-30
EP1260024A2 (en) 2002-11-27
GB2359680A (en) 2001-08-29
US7095988B2 (en) 2006-08-22
WO2001063792A3 (en) 2002-02-21
GB0004557D0 (en) 2000-04-19
US20030119462A1 (en) 2003-06-26
GB2359680B (en) 2002-05-15

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