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AU2001214607A1 - Adjustment of transmitter bias current based on transmitter gain - Google Patents

Adjustment of transmitter bias current based on transmitter gain

Info

Publication number
AU2001214607A1
AU2001214607A1 AU2001214607A AU1460701A AU2001214607A1 AU 2001214607 A1 AU2001214607 A1 AU 2001214607A1 AU 2001214607 A AU2001214607 A AU 2001214607A AU 1460701 A AU1460701 A AU 1460701A AU 2001214607 A1 AU2001214607 A1 AU 2001214607A1
Authority
AU
Australia
Prior art keywords
bias current
transmitter
gain
gain control
imax
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
AU2001214607A
Inventor
Kamal Gurkanwal Sahota
Brett C. Walker
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.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of AU2001214607A1 publication Critical patent/AU2001214607A1/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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices

Landscapes

  • Transmitters (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Techniques for adjusting the bias current of an active circuit in a transmitter based on the signal gain of the transmitter. The bias current affects various performances including linearity, noise figure, frequency response, and others. The amount of bias current that provides the required level of performance is dependent on the power level, which can be inferred from the gain control signals used to control the variable gain elements in the transmit signal path. Initially, at least one gain control signal for at least one variable gain element in the transmit signal path is received, with each gain control signal being indicative of an amplitude of a signal to be operated on by the active circuit. The bias current of the active circuit is then adjusted in accordance with the received gain control signal(s). To ensure proper circuit performance, the bias current can be limited to within a range defined by an upper value Imax and a lower value Imin can be set to a percentage of Imax. Imax and Imin can be generated by programmable current sources, and can also be compensated for temperature and power supply variations.
AU2001214607A 2000-11-03 2000-11-03 Adjustment of transmitter bias current based on transmitter gain Abandoned AU2001214607A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/030349 WO2002037673A1 (en) 2000-11-03 2000-11-03 Adjustment of transmitter bias current based on transmitter gain

Publications (1)

Publication Number Publication Date
AU2001214607A1 true AU2001214607A1 (en) 2002-05-15

Family

ID=21741960

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001214607A Abandoned AU2001214607A1 (en) 2000-11-03 2000-11-03 Adjustment of transmitter bias current based on transmitter gain

Country Status (8)

Country Link
EP (1) EP1330872B1 (en)
JP (1) JP2004530313A (en)
KR (1) KR100667641B1 (en)
CN (1) CN1502165A (en)
AT (1) ATE415736T1 (en)
AU (1) AU2001214607A1 (en)
DE (1) DE60040932D1 (en)
WO (1) WO2002037673A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6738605B1 (en) * 2002-09-26 2004-05-18 Thomson Licensing S.A. Method for optimizing an operating point of a power amplifier in a WCDMA mobile terminal
DE10308923A1 (en) * 2003-02-28 2004-09-16 Infineon Technologies Ag Circuit arrangement and method for compensating signal level jumps in amplification devices
US8320845B2 (en) 2003-03-18 2012-11-27 Telefonaktiebolaget L M Ericsson (Publ) Radio transmitter
EP1460767B1 (en) * 2003-03-18 2005-05-25 Telefonaktiebolaget LM Ericsson (publ) Radio transmitter
GB2401264A (en) * 2003-04-30 2004-11-03 Motorola Inc Method of controlling the bias and quiescent current of an RF transmitter
KR101102975B1 (en) * 2004-12-30 2012-01-05 매그나칩 반도체 유한회사 Digitally controlled variable gain amplifier
US7250817B2 (en) * 2005-06-28 2007-07-31 Motorola, Inc. Linear power efficient radio frequency (RF) driver system and method with power level control
US8107899B2 (en) 2007-04-19 2012-01-31 Panasonic Corporation Power supply circuit
JP5250326B2 (en) * 2007-09-26 2013-07-31 京セラ株式会社 Wireless communication apparatus and transmission control method
JP2011015239A (en) * 2009-07-02 2011-01-20 Nec Toshiba Space Systems Ltd Amplifier circuit, and method of adjusting bias used for the same
US8781411B2 (en) * 2012-01-18 2014-07-15 Qualcomm Incorporated Baseband filter and upconverter with configurable efficiency for wireless transmitters
US20150070097A1 (en) * 2012-09-23 2015-03-12 Dsp Group, Ltd. Configurable multimode multiband integrated distributed power amplifier
US10116264B1 (en) 2017-05-31 2018-10-30 Corning Optical Communications Wireless Ltd Calibrating a power amplifier such as in a remote unit in a wireless distribution system (WDS)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101173A (en) * 1990-11-28 1992-03-31 The United States Of America As Represented By The Secretary Of The Air Force Stored program controlled module amplifier bias and amplitude/phase compensation apparatus
US5307512A (en) * 1991-06-03 1994-04-26 Motorola, Inc. Power control circuitry for achieving wide dynamic range in a transmitter
JPH06252797A (en) * 1993-02-23 1994-09-09 Sony Corp Transceiver
JPH06260864A (en) * 1993-03-08 1994-09-16 Matsushita Electric Ind Co Ltd Transmit output amplifier
JPH07170202A (en) * 1993-12-15 1995-07-04 Hitachi Ltd Transmission circuit
US5426641A (en) * 1994-01-28 1995-06-20 Bell Communications Research, Inc. Adaptive class AB amplifier for TDMA wireless communications systems
GB2286305B (en) * 1994-01-29 1998-12-02 Motorola Ltd Power amplifier for radio transmitter and dual mode remote radio
FR2716313B1 (en) * 1994-02-11 1996-04-12 Alcatel Mobile Comm France Amplifier polarization control device.
JPH0946152A (en) * 1995-07-28 1997-02-14 Hitachi Ltd Wireless transceiver
JPH09238032A (en) * 1996-02-29 1997-09-09 Nec Corp Ota and bipolar multiplier
JPH1155131A (en) * 1997-08-06 1999-02-26 Nec Corp Radio transmission power controller
JP2000022464A (en) * 1998-07-03 2000-01-21 Mobile Komu Tokyo:Kk Power module for high frequency
JP2000151317A (en) * 1998-11-10 2000-05-30 Hitachi Ltd Transmitter and power amplifier
JP2001203591A (en) * 2000-01-18 2001-07-27 Hitachi Kokusai Electric Inc Transmission device

Also Published As

Publication number Publication date
ATE415736T1 (en) 2008-12-15
EP1330872A1 (en) 2003-07-30
JP2004530313A (en) 2004-09-30
WO2002037673A1 (en) 2002-05-10
CN1502165A (en) 2004-06-02
EP1330872B1 (en) 2008-11-26
DE60040932D1 (en) 2009-01-08
KR20030048453A (en) 2003-06-19
KR100667641B1 (en) 2007-01-12

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