AU2002213966A1 - Communications systems - Google Patents

Communications systems

Info

Publication number
AU2002213966A1
AU2002213966A1 AU2002213966A AU1396602A AU2002213966A1 AU 2002213966 A1 AU2002213966 A1 AU 2002213966A1 AU 2002213966 A AU2002213966 A AU 2002213966A AU 1396602 A AU1396602 A AU 1396602A AU 2002213966 A1 AU2002213966 A1 AU 2002213966A1
Authority
AU
Australia
Prior art keywords
communications systems
communications
systems
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
AU2002213966A
Inventor
Jonas Persson
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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
Priority claimed from GB0025550A external-priority patent/GB2368208B/en
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of AU2002213966A1 publication Critical patent/AU2002213966A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • 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
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • H03G3/3047—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers for intermittent signals, e.g. burst signals
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers
AU2002213966A 2000-10-18 2001-09-26 Communications systems Abandoned AU2002213966A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0025550A GB2368208B (en) 2000-10-18 2000-10-18 Communications systems
GB0025550.5 2000-10-18
US24175300P 2000-10-20 2000-10-20
US60/241,753 2000-10-20
PCT/EP2001/011123 WO2002033844A2 (en) 2000-10-18 2001-09-26 Communications systems

Publications (1)

Publication Number Publication Date
AU2002213966A1 true AU2002213966A1 (en) 2002-04-29

Family

ID=26245172

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002213966A Abandoned AU2002213966A1 (en) 2000-10-18 2001-09-26 Communications systems

Country Status (3)

Country Link
US (1) US20020045429A1 (en)
AU (1) AU2002213966A1 (en)
WO (1) WO2002033844A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004135177A (en) * 2002-10-11 2004-04-30 Sharp Corp Cellular phone
EP1568143B1 (en) * 2002-11-14 2006-09-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Transmission stage comprising phases and an amplitude regulating loop
DE10257435B3 (en) * 2002-11-14 2004-09-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. transmitting stage
US8428181B2 (en) 2002-12-02 2013-04-23 Research In Motion Limited Method and apparatus for optimizing transmitter power efficiency
US7333563B2 (en) 2004-02-20 2008-02-19 Research In Motion Limited Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
ATE362235T1 (en) * 2004-02-27 2007-06-15 Research In Motion Ltd METHOD AND DEVICE FOR OPTIMIZING TRANSMITTING POWER EFFICIENCY
US7308042B2 (en) 2004-02-27 2007-12-11 Research In Motion Limited Method and apparatus for optimizing transmitter power efficiency
US7148749B2 (en) * 2005-01-31 2006-12-12 Freescale Semiconductor, Inc. Closed loop power control with high dynamic range
US7873331B2 (en) 2006-06-04 2011-01-18 Samsung Electro-Mechanics Company, Ltd. Systems, methods, and apparatuses for multi-path orthogonal recursive predistortion
US7860466B2 (en) 2006-06-04 2010-12-28 Samsung Electro-Mechanics Company, Ltd. Systems, methods, and apparatuses for linear polar transmitters
US7518445B2 (en) 2006-06-04 2009-04-14 Samsung Electro-Mechanics Company, Ltd. Systems, methods, and apparatuses for linear envelope elimination and restoration transmitters
EP2027650B9 (en) 2006-06-14 2013-02-20 Research In Motion Limited Input drive control for switcher regulated power amplifier modules
WO2007143844A1 (en) 2006-06-14 2007-12-21 Research In Motion Limited Improved control of switcher regulated power amplifier modules
JP4867891B2 (en) * 2007-10-31 2012-02-01 アイコム株式会社 AM transmitter and modulation method thereof
US8629719B2 (en) 2010-02-04 2014-01-14 Epcos Ag Amplifier circuit and method for signal sensing
US8620238B2 (en) 2010-07-23 2013-12-31 Blackberry Limited Method of power amplifier switching power control using post power amplifier power detection

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595889B1 (en) * 1986-03-14 1988-05-06 Havel Christophe TRANSMISSION POWER CONTROL DEVICE IN A RADIO COMMUNICATION TRANSCEIVER STATION
GB9002789D0 (en) * 1990-02-08 1990-04-04 Marconi Co Ltd Circuit for reducing distortion produced by an r.f.power amplifier
US5187809A (en) * 1990-08-24 1993-02-16 Motorola, Inc. Dual mode automatic gain control
JPH1022756A (en) * 1996-07-04 1998-01-23 Mitsubishi Electric Corp Radio transmitter and its transmission control method
US6377784B2 (en) * 1999-02-09 2002-04-23 Tropian, Inc. High-efficiency modulation RF amplifier

Also Published As

Publication number Publication date
WO2002033844A2 (en) 2002-04-25
WO2002033844A3 (en) 2002-12-19
US20020045429A1 (en) 2002-04-18

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