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BR9612029A - Receptor de rádio transmissor de rádio e processo de calibração de um transdutor - Google Patents

Receptor de rádio transmissor de rádio e processo de calibração de um transdutor

Info

Publication number
BR9612029A
BR9612029A BR9612029A BR9612029A BR9612029A BR 9612029 A BR9612029 A BR 9612029A BR 9612029 A BR9612029 A BR 9612029A BR 9612029 A BR9612029 A BR 9612029A BR 9612029 A BR9612029 A BR 9612029A
Authority
BR
Brazil
Prior art keywords
transducer
calibration process
radio
transmitter
radio receiver
Prior art date
Application number
BR9612029A
Other languages
English (en)
Inventor
Jan-Erik Lundberg
Anders Staaf
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR9612029A publication Critical patent/BR9612029A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/008—Compensating DC offsets
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
    • H03J2200/28—Automatic self-alignment of a receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Analogue/Digital Conversion (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transceivers (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Circuits Of Receivers In General (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
BR9612029A 1995-12-15 1996-12-13 Receptor de rádio transmissor de rádio e processo de calibração de um transdutor BR9612029A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/573,543 US5881376A (en) 1995-12-15 1995-12-15 Digital calibration of a transceiver
PCT/SE1996/001661 WO1997023032A1 (en) 1995-12-15 1996-12-13 Digital calibration of a transceiver

Publications (1)

Publication Number Publication Date
BR9612029A true BR9612029A (pt) 1999-06-29

Family

ID=24292420

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9612029A BR9612029A (pt) 1995-12-15 1996-12-13 Receptor de rádio transmissor de rádio e processo de calibração de um transdutor

Country Status (16)

Country Link
US (1) US5881376A (pt)
EP (1) EP0867066B9 (pt)
JP (1) JP3822245B2 (pt)
KR (1) KR100450859B1 (pt)
CN (1) CN1080025C (pt)
AU (1) AU713270B2 (pt)
BR (1) BR9612029A (pt)
CA (1) CA2240630C (pt)
DE (1) DE69630461T2 (pt)
EE (1) EE03942B1 (pt)
MX (1) MX9804722A (pt)
NO (1) NO317449B1 (pt)
NZ (1) NZ324893A (pt)
RU (1) RU2189116C2 (pt)
TR (1) TR199801165T2 (pt)
WO (1) WO1997023032A1 (pt)

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US5960339A (en) * 1997-06-03 1999-09-28 At & T Corp Analog-to-digital transition: selecting the optimal cellular radio mix
US6088582A (en) * 1997-07-16 2000-07-11 International Business Machines Corp. Controlled environment radio test apparatus and method
US6137826A (en) 1997-11-17 2000-10-24 Ericsson Inc. Dual-mode modulation systems and methods including oversampling of narrow bandwidth signals
KR19990040843A (ko) * 1997-11-20 1999-06-15 윤종용 코드분할 다중접속 디지털 이동통신 시스템의 기지국 송신출력측정 및 기지국 호 시험을 위한 전력 검출 및 시험 단말장치
US6134281A (en) * 1998-02-10 2000-10-17 Litton Systems, Inc. Method and apparatus for calibration of a signal processing system utilizing digital down converters
US6088581A (en) * 1998-03-27 2000-07-11 Motorola, Inc. Method and apparatus for reducing amplitude modulated interference in a receiver
EP0948128B1 (en) * 1998-04-03 2004-12-01 Motorola Semiconducteurs S.A. DC offset cancellation in a quadrature receiver
KR20000039922A (en) * 1998-12-16 2000-07-05 Samsung Electronics Co Ltd Method for compensating variance of transmission power in each channel of cellular phone
US6374084B1 (en) * 1999-02-01 2002-04-16 Avaya Technology Corp. Method and system for calibrating electronic devices using polynomial fit calibration scheme
US6832075B1 (en) 1999-10-05 2004-12-14 Ericsson Inc. Method for calibrating the power output of a mobile device
US6968167B1 (en) * 1999-10-21 2005-11-22 Broadcom Corporation Adaptive radio transceiver with calibration
US7555263B1 (en) * 1999-10-21 2009-06-30 Broadcom Corporation Adaptive radio transceiver
KR100318953B1 (ko) * 1999-12-30 2001-12-29 윤종용 무선 단말기에서 수신 세기의 편차 보상 방법
DE10018021A1 (de) * 2000-04-11 2001-10-25 Nokia Mobile Phones Ltd Empfängeranordnung zum Empfangen frequenzmodulierter Funksignale sowie Verfahren zum Anpassen und Testen eines Empfangszweiges der Empfängeranordnung
SE519319C2 (sv) * 2000-06-27 2003-02-11 Ericsson Telefon Ab L M Transceiverkrets samt förfarande för kalibrering av komponenter i nämnd transceiver
US20020027493A1 (en) * 2000-08-23 2002-03-07 Brian Morrison Remote signal transmission control including compensation for variations in transmitter components
US6636722B1 (en) 2000-09-12 2003-10-21 Tektronix, Inc. Broadband receiver amplitude/phase normalization using a broadband temperature compensated noise source and a pseudo random sequence generator
US7522480B2 (en) 2001-01-25 2009-04-21 Dphi Acquisitions, Inc. Digital tracking servo system with multi-track seek with an acceleration clamp
US7076225B2 (en) * 2001-02-16 2006-07-11 Qualcomm Incorporated Variable gain selection in direct conversion receiver
DE10157864B4 (de) * 2001-11-26 2006-08-10 Infineon Technologies Ag Quadratur-Amplituden-Modulations- (QAM) Empfänger
US7548591B2 (en) * 2003-04-24 2009-06-16 Nxp B.V. Quadrature modulator and calibration method
US7167682B1 (en) * 2004-02-02 2007-01-23 Litepoint Corporation Radio frequency (RF) transceiver with substantially coincident communication of RF and related control signals
US7512037B2 (en) * 2005-09-26 2009-03-31 Raytheon Company Method and apparatus for acoustic system having a transceiver module
US20070116295A1 (en) * 2005-11-10 2007-05-24 Jan Vandewege System and method for real time emulation of communication systems
US20080130607A1 (en) * 2006-11-30 2008-06-05 Junqiang Li Method and System for Multimode DC Offset Compensation
US7783732B2 (en) * 2007-05-24 2010-08-24 Agere Systems Inc. Home adaptive transceiver for home networking communication system
US8750411B2 (en) * 2011-06-30 2014-06-10 Motorola Mobility Llc Method and apparatus for reducing transmitter interference

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291277A (en) * 1979-05-16 1981-09-22 Harris Corporation Adaptive predistortion technique for linearizing a power amplifier for digital data systems
US4729110A (en) * 1984-12-24 1988-03-01 General Electric Company Correction of offset and gain errors in RF receivers
FR2577732B1 (fr) * 1985-02-15 1987-03-20 Thomson Csf Dispositif precorrecteur du signal audiofrequence dans une chaine de modulation d'impulsions en largeur d'emetteur de signaux radioelectriques a modulation d'amplitude
US4700151A (en) * 1985-03-20 1987-10-13 Nec Corporation Modulation system capable of improving a transmission system
JPH0771118B2 (ja) * 1989-12-27 1995-07-31 三菱電機株式会社 変調装置
FI83715C (fi) * 1989-09-25 1991-08-12 Nokia Mobile Phones Ltd Logikstyrd intrimning och kompensation av signalnivaoer och deviationer i en radiotelefon.
FR2652965A1 (fr) * 1989-10-06 1991-04-12 Philips Electronique Lab Dispositif de predistorsion pour systeme de transmission numerique.
EP0473373A3 (en) * 1990-08-24 1993-03-03 Rockwell International Corporation Calibration system for direct conversion receiver
US5249203A (en) * 1991-02-25 1993-09-28 Rockwell International Corporation Phase and gain error control system for use in an i/q direct conversion receiver
RU2022464C1 (ru) * 1991-03-18 1994-10-30 Владимир Павлович Попов Способ калибровки передаточной характеристики цифроаналогового преобразователя
DE69228816T2 (de) * 1992-10-28 1999-08-19 Alcatel Offsetgleichspannungskorrektur für Direktmisch-TDMA-Empfänger
JP2883260B2 (ja) * 1993-04-20 1999-04-19 三菱電機株式会社 歪補償回路
US5351016A (en) * 1993-05-28 1994-09-27 Ericsson Ge Mobile Communications Inc. Adaptively self-correcting modulation system and method

Also Published As

Publication number Publication date
KR100450859B1 (ko) 2004-11-16
CA2240630A1 (en) 1997-06-26
CN1209223A (zh) 1999-02-24
AU1216897A (en) 1997-07-14
NO982759D0 (no) 1998-06-15
RU2189116C2 (ru) 2002-09-10
EP0867066B9 (en) 2005-12-07
CA2240630C (en) 2004-03-23
TR199801165T2 (xx) 1998-10-21
HK1017518A1 (en) 1999-11-19
EP0867066A1 (en) 1998-09-30
EP0867066B1 (en) 2003-10-22
AU713270B2 (en) 1999-11-25
DE69630461T2 (de) 2004-08-19
DE69630461D1 (de) 2003-11-27
NO317449B1 (no) 2004-11-01
MX9804722A (es) 1998-10-31
EE03942B1 (et) 2002-12-16
EE9800178A (et) 1998-12-15
WO1997023032A1 (en) 1997-06-26
NO982759L (no) 1998-07-30
KR20000064447A (ko) 2000-11-06
US5881376A (en) 1999-03-09
JP3822245B2 (ja) 2006-09-13
CN1080025C (zh) 2002-02-27
NZ324893A (en) 1999-10-28
JP2000502230A (ja) 2000-02-22

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Legal Events

Date Code Title Description
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]