WO2002025846A3 - Calibration of a transmit branch and/or a receive branch of a quadrature transmitter and/or transceiver - Google Patents

Calibration of a transmit branch and/or a receive branch of a quadrature transmitter and/or transceiver Download PDF

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Publication number
WO2002025846A3
WO2002025846A3 PCT/EP2001/010312 EP0110312W WO0225846A3 WO 2002025846 A3 WO2002025846 A3 WO 2002025846A3 EP 0110312 W EP0110312 W EP 0110312W WO 0225846 A3 WO0225846 A3 WO 0225846A3
Authority
WO
WIPO (PCT)
Prior art keywords
branch
transmit
receive
low frequency
frequency component
Prior art date
Application number
PCT/EP2001/010312
Other languages
French (fr)
Other versions
WO2002025846A2 (en
Inventor
Rishi Mohindra
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Priority to EP01972017A priority Critical patent/EP1364476A2/en
Priority to KR1020027006323A priority patent/KR20020059745A/en
Priority to JP2002528939A priority patent/JP2004509555A/en
Publication of WO2002025846A2 publication Critical patent/WO2002025846A2/en
Publication of WO2002025846A3 publication Critical patent/WO2002025846A3/en

Links

Classifications

    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H04B17/104—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof of other parameters, e.g. DC offset, delay or propagation times
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/14—Monitoring; Testing of transmitters for calibration of the whole transmission and reception path, e.g. self-test loop-back

Abstract

A method of calibrating a transmit branch of a transmitter is provided. A low frequency component in a high frequency output signal of the transmit branch is measured. The low frequency component is present when the transmit branch is uncalibrated. From the measured low frequency component, a first compensation signal is derived. The first compensation signal is injected into an in-phase branch of the transmit branch. A second compensation signal is derived and injected into a quadrature branch of the transmit branch. The first and second compensation signals are swept and adapted on the basis of the measured low frequency component. From the sweeping, minimum values of the measured low frequency component are obtained. Thereafter, the first and second compensation signals are successively set at the minimum values. In addition to calibrating the transmit branch, in case of a transceiver, a receive branch may be calibrated. To calibrate the receive branch, the calibrated transmitter is coupled to the receive branch. Thereafter, the receive branch is calibrated through sweeping and setting of receiver branch parameters.
PCT/EP2001/010312 2000-09-20 2001-09-06 Calibration of a transmit branch and/or a receive branch of a quadrature transmitter and/or transceiver WO2002025846A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01972017A EP1364476A2 (en) 2000-09-20 2001-09-06 Calibration of a transmit branch and/or a receive branch of a quadrature transmitter and/or transceiver
KR1020027006323A KR20020059745A (en) 2000-09-20 2001-09-06 Calibration of a transmit branch and/or a receive branch of a quadrature transmitter and/or transceiver
JP2002528939A JP2004509555A (en) 2000-09-20 2001-09-06 Calibration of the transmitting and / or receiving branches of a quadrature transmitter and / or receiver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66592500A 2000-09-20 2000-09-20
US09/665,925 2000-09-20

Publications (2)

Publication Number Publication Date
WO2002025846A2 WO2002025846A2 (en) 2002-03-28
WO2002025846A3 true WO2002025846A3 (en) 2003-10-02

Family

ID=24672120

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/010312 WO2002025846A2 (en) 2000-09-20 2001-09-06 Calibration of a transmit branch and/or a receive branch of a quadrature transmitter and/or transceiver

Country Status (4)

Country Link
EP (1) EP1364476A2 (en)
JP (1) JP2004509555A (en)
KR (1) KR20020059745A (en)
WO (1) WO2002025846A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7305024B2 (en) * 2003-08-29 2007-12-04 Texas Instruments Incorporated Method of fixing frequency complex up-conversion phase and gain impairments
GB0508205D0 (en) 2005-04-22 2005-06-01 Ttp Communications Ltd Assessing the performance of radio devices
JP4786335B2 (en) * 2005-12-26 2011-10-05 京セラ株式会社 Communication system, receiver and transmitter
JP4918927B2 (en) 2006-04-21 2012-04-18 日本電気株式会社 Signal processing circuit
WO2008018263A1 (en) 2006-08-08 2008-02-14 Nec Corporation Signal processing circuit and signal processing method
JP5365516B2 (en) * 2007-07-10 2013-12-11 日本電気株式会社 Signal processing apparatus and signal processing method
KR101681045B1 (en) * 2010-11-22 2016-12-01 삼성전자주식회사 Apparatus and method for calibration in wireless comunication system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5574994A (en) * 1994-07-15 1996-11-12 Uniden Corporation Method of correcting carrier leak in a transmitter
US5584059A (en) * 1993-06-30 1996-12-10 Motorola, Inc. DC offset reduction in a zero-if transmitter
US5628059A (en) * 1994-07-15 1997-05-06 Uniden Corporation DC offset circuit for cartesian loop
EP0801465A1 (en) * 1996-04-12 1997-10-15 Continental Electronics Corporation Radio transmitter apparatus
US5793817A (en) * 1995-10-24 1998-08-11 U.S. Philips Corporation DC offset reduction in a transmitter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584059A (en) * 1993-06-30 1996-12-10 Motorola, Inc. DC offset reduction in a zero-if transmitter
US5574994A (en) * 1994-07-15 1996-11-12 Uniden Corporation Method of correcting carrier leak in a transmitter
US5628059A (en) * 1994-07-15 1997-05-06 Uniden Corporation DC offset circuit for cartesian loop
US5793817A (en) * 1995-10-24 1998-08-11 U.S. Philips Corporation DC offset reduction in a transmitter
EP0801465A1 (en) * 1996-04-12 1997-10-15 Continental Electronics Corporation Radio transmitter apparatus

Also Published As

Publication number Publication date
WO2002025846A2 (en) 2002-03-28
EP1364476A2 (en) 2003-11-26
KR20020059745A (en) 2002-07-13
JP2004509555A (en) 2004-03-25

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