WO2001084741A3 - Output power control of a transmitter - Google Patents

Output power control of a transmitter Download PDF

Info

Publication number
WO2001084741A3
WO2001084741A3 PCT/US2001/014486 US0114486W WO0184741A3 WO 2001084741 A3 WO2001084741 A3 WO 2001084741A3 US 0114486 W US0114486 W US 0114486W WO 0184741 A3 WO0184741 A3 WO 0184741A3
Authority
WO
WIPO (PCT)
Prior art keywords
output
transmitter
control
level
value
Prior art date
Application number
PCT/US2001/014486
Other languages
French (fr)
Other versions
WO2001084741A2 (en
Inventor
Stephen J Pratt
Original Assignee
Matsushita Mobile Comm Dev Corp
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 Matsushita Mobile Comm Dev Corp filed Critical Matsushita Mobile Comm Dev Corp
Priority to AU2001259495A priority Critical patent/AU2001259495A1/en
Publication of WO2001084741A2 publication Critical patent/WO2001084741A2/en
Publication of WO2001084741A3 publication Critical patent/WO2001084741A3/en

Links

Classifications

    • 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
    • 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
    • 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
    • H03G3/3089—Control of digital or coded signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)

Abstract

An apparatus and a method to control the output power of a transmitter. The system includes a control circuit, a memory device and a processing unit. Calibration points are determined by first characterizing the frequency response of a transmitter (510) to generate an output level characteristic curve. Next, calibration points are identified by partitioning the output level characteristic curve into substantially linear regions, or on some other basis (515). For each such end point, a calibration value is measured (520). The calibration value is a digital value that can be stored in the memory device and represents the level of the control value necessary to obtain a desired output signal level from the output control circuit. Finally, the calibration values are stored within the memory device (525). The processing unit operates to control the output level of the transmitter. Initially, the processor receives a command to change the power level and/or frequency (555). Based on the power level, an set of calibration points are selected (560). Based on this information, a output level control value is generated (595). Temperature, voltage and other compensation is performed to adjust the output level control value (575, 580). Finally, the adjusted output level control value is used to control the output of the transmitter (585).
PCT/US2001/014486 2000-05-04 2001-05-04 Output power control of a transmitter WO2001084741A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001259495A AU2001259495A1 (en) 2000-05-04 2001-05-04 Output power control of a transmitter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56419200A 2000-05-04 2000-05-04
US09/564,192 2000-05-04

Publications (2)

Publication Number Publication Date
WO2001084741A2 WO2001084741A2 (en) 2001-11-08
WO2001084741A3 true WO2001084741A3 (en) 2002-06-27

Family

ID=24253510

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/014486 WO2001084741A2 (en) 2000-05-04 2001-05-04 Output power control of a transmitter

Country Status (2)

Country Link
AU (1) AU2001259495A1 (en)
WO (1) WO2001084741A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1401098B1 (en) * 2002-09-11 2008-10-15 Palm, Inc. Method and system for power control in radio transceivers and transmitters
GB2393595B (en) * 2002-09-26 2007-04-04 Qualcomm A transmitter and a method of calibrating power in signals output from a transmitter
DE10251465A1 (en) * 2002-11-05 2004-05-19 Siemens Ag Balancing mobile communications terminal transmission power involves dividing standard mobile radio frequency range into frequency intervals, carrying out power balancing for at least some intervals
US6825725B1 (en) * 2003-06-27 2004-11-30 Sige Semiconductor Inc. Integrated power amplifier circuit
US7502601B2 (en) * 2003-12-22 2009-03-10 Black Sand Technologies, Inc. Power amplifier with digital power control and associated methods
US7522892B2 (en) 2003-12-22 2009-04-21 Black Sand Technologies, Inc. Power amplifier with serial interface and associated methods
US7515884B2 (en) * 2005-03-02 2009-04-07 Cisco Technology, Inc. Method and system for self-calibrating transmit power
EP2002577B1 (en) 2006-04-06 2013-03-13 Wavecom Method of initialising an electronic radio communication module, method of compressing and decompressing calibration parameters, corresponding computer programme product and storage means

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452473A (en) * 1994-02-28 1995-09-19 Qualcomm Incorporated Reverse link, transmit power correction and limitation in a radiotelephone system
GB2313723A (en) * 1996-05-31 1997-12-03 Samsung Electronics Co Ltd Controlling the output power of a mobile phone using a look-up table for attenuation values and frequencies

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452473A (en) * 1994-02-28 1995-09-19 Qualcomm Incorporated Reverse link, transmit power correction and limitation in a radiotelephone system
GB2313723A (en) * 1996-05-31 1997-12-03 Samsung Electronics Co Ltd Controlling the output power of a mobile phone using a look-up table for attenuation values and frequencies

Also Published As

Publication number Publication date
AU2001259495A1 (en) 2001-11-12
WO2001084741A2 (en) 2001-11-08

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