WO2004112261A3 - Control system with selective open-loop operation - Google Patents

Control system with selective open-loop operation Download PDF

Info

Publication number
WO2004112261A3
WO2004112261A3 PCT/US2004/016447 US2004016447W WO2004112261A3 WO 2004112261 A3 WO2004112261 A3 WO 2004112261A3 US 2004016447 W US2004016447 W US 2004016447W WO 2004112261 A3 WO2004112261 A3 WO 2004112261A3
Authority
WO
WIPO (PCT)
Prior art keywords
control system
loop operation
selective open
power
selectively
Prior art date
Application number
PCT/US2004/016447
Other languages
French (fr)
Other versions
WO2004112261A9 (en
WO2004112261A2 (en
Inventor
Barrie Gilbert
Original Assignee
Analog Devices 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 Analog Devices Inc filed Critical Analog Devices Inc
Publication of WO2004112261A2 publication Critical patent/WO2004112261A2/en
Publication of WO2004112261A3 publication Critical patent/WO2004112261A3/en
Publication of WO2004112261A9 publication Critical patent/WO2004112261A9/en

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

Abstract

A control system (24) may be selectively operated in open loop mode, for example, during databursts. In a power control system, the tranmitted power may be selectively held at a constant level, for example, at the end of a ramp period. The forward path gain of a control system may be varied in an inverse-function (58) ahead of an integrator (52). The slope of a measurement signal from a detector (58) may be made to have a complementary polarity (60).
PCT/US2004/016447 2003-05-29 2004-05-24 Control system with selective open-loop operation WO2004112261A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/449,731 US7546098B2 (en) 2003-05-29 2003-05-29 Control system with selective open-loop operation
US10/449,731 2003-05-29

Publications (3)

Publication Number Publication Date
WO2004112261A2 WO2004112261A2 (en) 2004-12-23
WO2004112261A3 true WO2004112261A3 (en) 2008-04-03
WO2004112261A9 WO2004112261A9 (en) 2009-01-22

Family

ID=33451854

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/016447 WO2004112261A2 (en) 2003-05-29 2004-05-24 Control system with selective open-loop operation

Country Status (2)

Country Link
US (3) US7546098B2 (en)
WO (1) WO2004112261A2 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7546098B2 (en) * 2003-05-29 2009-06-09 Analog Devices, Inc. Control system with selective open-loop operation
US7805115B1 (en) * 2003-06-02 2010-09-28 Analog Devices, Inc. Variable filter systems and methods for enhanced data rate communication systems
EP1526651B1 (en) * 2003-10-23 2006-05-24 Sony Ericsson Mobile Communications AB Additional regulation of the reference signal of the automatic power control in a mobile terminal
TWI234939B (en) * 2004-02-05 2005-06-21 Wistron Neweb Corp Satellite communication device and its switch unit
US7366484B2 (en) * 2004-06-04 2008-04-29 Skyworks Solutions, Inc. Systems and methods for adjusting the bias level of a mixer in a transmitter
US7834813B2 (en) * 2004-10-15 2010-11-16 Skycross, Inc. Methods and apparatuses for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness
US7663555B2 (en) * 2004-10-15 2010-02-16 Sky Cross Inc. Method and apparatus for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness
US7400866B2 (en) * 2005-01-14 2008-07-15 General Instrument Corporation Methods and apparatus for calibrating and controlling output power levels in a broadband communication system
US7454179B1 (en) * 2005-11-15 2008-11-18 Rf Micro Devices, Inc. Radio frequency power detector and decision circuit used with DC supply voltage controlled power amplifiers
US20070176665A1 (en) * 2006-02-01 2007-08-02 Analog Devices, Inc. Variable voltage attenuator circuits
DE102006014778A1 (en) * 2006-03-30 2007-10-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device and method for operating-parameter-dependent gain adjustment in radio devices
US7659707B2 (en) 2007-05-14 2010-02-09 Hittite Microwave Corporation RF detector with crest factor measurement
US8081710B2 (en) 2007-11-08 2011-12-20 Pine Valley Investments, Inc. System and method for corrected modulation with nonlinear power amplification
US8233852B2 (en) * 2008-04-04 2012-07-31 Pine Valley Investments, Inc. Calibration techniques for non-linear devices
US8072205B1 (en) 2008-04-29 2011-12-06 Analog Devices, Inc. Peak-to-average measurement with envelope pre-detection
US8190107B1 (en) 2008-04-29 2012-05-29 Analog Devices, Inc. Measurement systems with envelope pre-detection
US8716984B2 (en) * 2009-06-29 2014-05-06 Advanced Energy Industries, Inc. Method and apparatus for modifying the sensitivity of an electrical generator to a nonlinear load
US9503991B2 (en) * 2009-12-18 2016-11-22 Blackberry Limited Method for controlling power transitions in transmitter systems
CN102208916B (en) * 2011-03-15 2014-03-12 安徽白鹭电子科技有限公司 Automatic compensation method for realizing power measurement based on capacitive reactance and inductive reactance of radio frequency circuit
CN104218899B (en) * 2013-05-31 2017-03-01 日月光半导体制造股份有限公司 Power-sensing circuit and the rf power amplifier circuit using it and electronic system
US9250276B2 (en) 2013-09-30 2016-02-02 Analog Devices, Inc. Microwave voltmeter using fully-linearized diode detector
TWM519243U (en) * 2015-08-25 2016-03-21 Trans Electric Co Ltd Radio frequency signal intensity detection device
US10365308B2 (en) 2015-12-08 2019-07-30 Skyworks Solutions, Inc. Wide dynamic range broadband current mode linear detector circuits for high power radio frequency power amplifier
US10644594B2 (en) * 2017-10-31 2020-05-05 Texas Instruments Incorporated Power converter with reduced undershoot and overshoot during load transients
JP7215067B2 (en) * 2018-10-22 2023-01-31 株式会社デンソー high frequency amplifier

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5128629A (en) * 1991-04-22 1992-07-07 Hughes Aircraft Company Method for controlling the output power of digital cellular telephones
US5371473A (en) * 1993-09-10 1994-12-06 Hughes Aircraft Company Thermally stable ALC for pulsed output amplifier
US20030040342A1 (en) * 1999-08-31 2003-02-27 Phil Coan System and method for constant loop gain in a closed loop circuit
US20040266371A1 (en) * 2001-11-28 2004-12-30 Summers Andrew Gordon Transmitter rf power control

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4263560A (en) * 1974-06-06 1981-04-21 The United States Of America As Represented By The Secretary Of The Navy Log-exponential AGC circuit
US4053846A (en) * 1975-06-24 1977-10-11 Honeywell Inc. Amplifier apparatus
US4335361A (en) * 1977-09-01 1982-06-15 Honeywell Inc. Variable gain amplifier
WO1988001453A1 (en) * 1986-08-13 1988-02-25 Aranda Applied Research & Tech Adaptive gain control amplifier
US4990803A (en) 1989-03-27 1991-02-05 Analog Devices, Inc. Logarithmic amplifier
JP2643516B2 (en) * 1990-02-01 1997-08-20 日本電気株式会社 Logarithmic amplifier circuit
JP2800500B2 (en) * 1991-10-01 1998-09-21 松下電器産業株式会社 Burst transmission output control circuit
US5345185A (en) 1992-04-14 1994-09-06 Analog Devices, Inc. Logarithmic amplifier gain stage
US5298811A (en) 1992-08-03 1994-03-29 Analog Devices, Inc. Synchronous logarithmic amplifier
US5745523A (en) * 1992-10-27 1998-04-28 Ericsson Inc. Multi-mode signal processing
US5489868A (en) 1994-10-04 1996-02-06 Analog Devices, Inc. Detector cell for logarithmic amplifiers
US5572166A (en) 1995-06-07 1996-11-05 Analog Devices, Inc. Linear-in-decibel variable gain amplifier
US7430257B1 (en) * 1998-02-12 2008-09-30 Lot 41 Acquisition Foundation, Llc Multicarrier sub-layer for direct sequence channel and multiple-access coding
US6321072B1 (en) 1998-08-31 2001-11-20 Conexant Systems, Inc. Distortion control feedback loop utilizing a non-linear transfer function generator to compensate for non-linearities in a transmitter circuit
US6144244A (en) 1999-01-29 2000-11-07 Analog Devices, Inc. Logarithmic amplifier with self-compensating gain for frequency range extension
US6975838B1 (en) * 1999-10-21 2005-12-13 Broadcom Corporation Adaptive radio transceiver with noise suppression
US6920188B1 (en) * 2000-11-16 2005-07-19 Piradian, Inc. Method and apparatus for processing a multiple-component wide dynamic range signal
US7110349B2 (en) * 2001-03-06 2006-09-19 Brn Phoenix, Inc. Adaptive communications methods for multiple user packet radio wireless networks
US7546098B2 (en) * 2003-05-29 2009-06-09 Analog Devices, Inc. Control system with selective open-loop operation
US6903542B2 (en) * 2003-08-29 2005-06-07 Agilent Technologies, Inc. Systems and method for performing RF power measurements
US7657236B2 (en) * 2005-08-16 2010-02-02 Broadcom Corporation Transmitter having reduced local oscillator (LO) leakage by determining direct LO coupling and baseband DC offset
WO2007033343A2 (en) * 2005-09-14 2007-03-22 Neology, Inc. Systems and methods for an rf nulling scheme in rfid
US7873123B2 (en) * 2007-07-30 2011-01-18 Alpha Imaging Technology Corp. Null detector and method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5128629A (en) * 1991-04-22 1992-07-07 Hughes Aircraft Company Method for controlling the output power of digital cellular telephones
US5371473A (en) * 1993-09-10 1994-12-06 Hughes Aircraft Company Thermally stable ALC for pulsed output amplifier
US20030040342A1 (en) * 1999-08-31 2003-02-27 Phil Coan System and method for constant loop gain in a closed loop circuit
US20040266371A1 (en) * 2001-11-28 2004-12-30 Summers Andrew Gordon Transmitter rf power control

Also Published As

Publication number Publication date
US20040242170A1 (en) 2004-12-02
US20090203336A1 (en) 2009-08-13
US7546098B2 (en) 2009-06-09
US20100167670A1 (en) 2010-07-01
US7711333B2 (en) 2010-05-04
WO2004112261A9 (en) 2009-01-22
US8233857B2 (en) 2012-07-31
WO2004112261A2 (en) 2004-12-23

Similar Documents

Publication Publication Date Title
WO2004112261A9 (en) Control system with selective open-loop operation
WO2007089994A3 (en) Supply voltage control for a power amplifier
EP1925547A3 (en) Derailleur control device and method for controlling the front derailleur
WO2006115661A3 (en) Switchable power level detector for multi-mode communication device
TW200609700A (en) Low-gain current mode voltage regulator and control method thereof
EP1758236A3 (en) Method and apparatus for digital control of a switching regulator
WO2005076967A3 (en) Methods and systems for area search using a plurality of unmanned vehicles
EP1672764A3 (en) System and method for providing power control of an energy storage system
TW200642324A (en) Closed loop power control with high dynamic range
WO2005052599A3 (en) Method and apparatus for lowering power use in a mobile device including a ranging receiver
WO2006065887A3 (en) Method and apparatus for bias and alignment control in an optical signal transmitter
WO2005074435A3 (en) Apparatus for providing haptic feedback
WO2006065306A3 (en) System, method and semiconductor device for charging a secondary battery
EP1367708A3 (en) Motor driving apparatus
EP1453212A3 (en) Electronic apparatus and system control method for the electronic apparatus
CA2315053A1 (en) Method and apparatus for determining an operating point of a non-linear amplifier of a communication channel
WO2006060144A3 (en) Light detection power system and method for same
WO2006124527A3 (en) Radioactive decay based stable time or frequency reference signal source
WO2004001335A3 (en) Increasing the dynamic range of a mems gyroscope
WO2003014775A3 (en) Optical amplifier having automatic gain control
WO2002015779A3 (en) Method and apparatus for determining blood oxygen transport
EP1422813A3 (en) Inverter control method and apparatus
DK1100316T3 (en) Unmanned vehicle designed to be used in a stable such as a food stall
TW200729773A (en) System and method for controlling the transmit power of a wireless module
WO2006126165A3 (en) Method for current protection of a power switch and apparatus for implementing same

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase