BR9909178A - Circuito de correção de distorção - Google Patents

Circuito de correção de distorção

Info

Publication number
BR9909178A
BR9909178A BR9909178-0A BR9909178A BR9909178A BR 9909178 A BR9909178 A BR 9909178A BR 9909178 A BR9909178 A BR 9909178A BR 9909178 A BR9909178 A BR 9909178A
Authority
BR
Brazil
Prior art keywords
signal
distortion
path
correction circuit
resultant
Prior art date
Application number
BR9909178-0A
Other languages
English (en)
Inventor
Michael Faulkner
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 BR9909178A publication Critical patent/BR9909178A/pt

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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplifiers (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

"CIRCUITO DE CORREçãO DE DISTORçãO" Um circuito de correção de distorção (5) para um receptor de conversão contínua, o receptor de conversão contínua compreendendo um oscilador local (2) para gerar um sinal de oscilador local, um misturador (3) para multiplicar um sinal de radiofreq³ência, e um sinal de oscilador local conjuntamente e fornecer o sinal de saída de misturador resultante a um caminho de sinal demodulado (8), o caminho de sinal demodulado incluindo um primeiro filtro passa-baixo (4) para selecionar um sinal de banda base em um primeiro terminal de saída de filtro, no qual o circuito de correção de distorção (5) inclui um circuito de quadratura (6) para esquadrar o sinal de saída do misturador e fornecer o sinal de estimação resultante a um caminho de sinal de estimação de distorção (9), dispositivos de subtração de sinal (52) para subtrair o sinal de estimação de distorção em um ponto de subtração (10) no caminho de sinal de estimação de distorção, e dispositivos de processamento adaptativo (280 para igualar a função de transferência do caminho de estimação de sinal de distorção e a função de transferência do caminho de sinal demodulado entre a saída do misturador e o ponto de subtração.
BR9909178-0A 1998-03-27 1999-03-29 Circuito de correção de distorção BR9909178A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPP2618A AUPP261898A0 (en) 1998-03-27 1998-03-27 Dc offset and im2 removal in direct conversion receivers
PCT/AU1999/000226 WO1999050966A1 (en) 1998-03-27 1999-03-29 Distortion correction circuit for direct conversion receiver

Publications (1)

Publication Number Publication Date
BR9909178A true BR9909178A (pt) 2000-12-05

Family

ID=3806879

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9909178-0A BR9909178A (pt) 1998-03-27 1999-03-29 Circuito de correção de distorção

Country Status (13)

Country Link
US (1) US6606484B1 (pt)
EP (1) EP1064729B1 (pt)
JP (1) JP4195193B2 (pt)
KR (1) KR100537418B1 (pt)
CN (1) CN1158780C (pt)
AT (1) ATE298474T1 (pt)
AU (2) AUPP261898A0 (pt)
BR (1) BR9909178A (pt)
DE (1) DE69925902D1 (pt)
EE (1) EE200000567A (pt)
HK (1) HK1039224B (pt)
IL (1) IL138614A (pt)
WO (1) WO1999050966A1 (pt)

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EP1076424A1 (en) * 1999-03-01 2001-02-14 Mitsubishi Denki Kabushiki Kaisha Transmitter/receiver unit
JP2002009655A (ja) * 2000-06-23 2002-01-11 Communication Research Laboratory 双方向無線通信システム及び双方向無線通信方法
US6785529B2 (en) * 2002-01-24 2004-08-31 Qualcomm Incorporated System and method for I-Q mismatch compensation in a low IF or zero IF receiver
US7657241B2 (en) * 2002-02-01 2010-02-02 Qualcomm, Incorporated Distortion reduction calibration
KR20080059339A (ko) * 2002-06-07 2008-06-26 인터디지탈 테크날러지 코포레이션 직접 변환 다중 캐리어 프로세서를 위한 방법 및 시스템
KR100790858B1 (ko) * 2002-09-04 2008-01-02 삼성전자주식회사 시공유 ｉ 채널 및 ｑ 채널을 가진 직접변환 수신기 및수신방법
EP1634380B1 (en) * 2003-06-04 2010-05-26 ST-Ericsson SA Adaptive intermodulation distortion filter for zero-if receivers
KR100544777B1 (ko) * 2004-04-07 2006-01-23 삼성탈레스 주식회사 Ｉ／ｑ 부정합 보상 방법 및 장치
US20060234664A1 (en) * 2005-01-13 2006-10-19 Mediatek Incorporation Calibration method for suppressing second order distortion
US8050649B2 (en) * 2005-08-30 2011-11-01 Qualcomm Incorporated Downconversion mixer with IM2 cancellation
US7949323B1 (en) * 2006-02-24 2011-05-24 Texas Instruments Incorporated Local oscillator leakage counterbalancing in a receiver
US7876867B2 (en) * 2006-08-08 2011-01-25 Qualcomm Incorporated Intermodulation distortion detection and mitigation
US8290100B2 (en) 2006-08-08 2012-10-16 Qualcomm Incorporated Interference detection and mitigation
TW200816661A (en) * 2006-09-25 2008-04-01 Alcor Micro Corp Method for I/Q signal adjustment
FI20075275A0 (fi) * 2007-04-19 2007-04-19 Nokia Corp RF-transkonduktanssituloaste
US8032102B2 (en) * 2008-01-15 2011-10-04 Axiom Microdevices, Inc. Receiver second order intermodulation correction system and method
US8081929B2 (en) * 2008-06-05 2011-12-20 Broadcom Corporation Method and system for optimal frequency planning for an integrated communication system with multiple receivers
US8855580B2 (en) * 2008-06-27 2014-10-07 Telefonaktiebolaget L M Ericsson (Publ) Methods and apparatus for reducing own-transmitter interference in low-IF and zero-IF receivers
US8055234B2 (en) * 2008-06-27 2011-11-08 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for suppressing strong-signal interference in low-IF receivers
US7995973B2 (en) * 2008-12-19 2011-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Own transmitter interference tolerant transceiver and receiving methods
US8090320B2 (en) * 2008-12-19 2012-01-03 Telefonaktiebolaget Lm Ericsson (Publ) Strong signal tolerant OFDM receiver and receiving methods
JP5334318B2 (ja) * 2009-11-30 2013-11-06 ルネサスエレクトロニクス株式会社 通信用半導体集積回路およびその動作方法
US8237500B1 (en) 2011-03-22 2012-08-07 Sioma Edward M Signal correction circuit for reducing errors and distortions and its associated method of operation
EP2595322A1 (en) * 2011-11-18 2013-05-22 Stichting IMEC Nederland Interference rejection in a low power transmitter
US8817925B2 (en) 2012-03-16 2014-08-26 Qualcomm Incorporated System and method for RF spur cancellation
CN109495421B (zh) * 2017-09-13 2021-04-30 深圳市中兴微电子技术有限公司 一种同相分量正交分量失配补偿装置及方法
US10425182B2 (en) 2017-09-29 2019-09-24 Futurewei Technologies, Inc. Inter-band distortion and interference mitigation within communication systems
US11784731B2 (en) * 2021-03-09 2023-10-10 Apple Inc. Multi-phase-level signaling to improve data bandwidth over lossy channels
CN114650073B (zh) * 2022-04-15 2023-05-16 成都信息工程大学 一种射频接收机的线性化校正方法及装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561113A (en) * 1983-04-09 1985-12-24 Trio Kabushiki Kaisha Distortion canceller for FM receiver
JPS6042906A (ja) * 1983-08-19 1985-03-07 Pioneer Electronic Corp クオドラチユア検波器
US4926132A (en) * 1989-08-28 1990-05-15 Motorola Inc. FM detector with reduced distortion
EP0473373A3 (en) * 1990-08-24 1993-03-03 Rockwell International Corporation Calibration system for direct conversion receiver
US5230099A (en) * 1991-01-24 1993-07-20 Rockwell International Corporation System for controlling phase and gain errors in an i/q direct conversion receiver
DE4235834C2 (de) * 1992-10-23 1994-11-17 Baeumer Michael Vorrichtung zur Behandlung von Abwässern
US5604929A (en) * 1995-04-21 1997-02-18 Rockwell International System for correcting quadrature gain and phase errors in a direct conversion single sideband receiver independent of the character of the modulated signal
JP3316723B2 (ja) * 1995-04-28 2002-08-19 三菱電機株式会社 受信装置の補償方法・受信装置及び送受信装置
FI961935A (fi) * 1996-05-07 1997-11-08 Nokia Mobile Phones Ltd Erojännitteen eliminointi ja AM-vaimennus suoramuunnosvastaanottimessa
US5898912A (en) * 1996-07-01 1999-04-27 Motorola, Inc. Direct current (DC) offset compensation method and apparatus
US6516187B1 (en) * 1998-03-13 2003-02-04 Maxim Integrated Products, Inc. DC offset correction for direct conversion tuner IC
US6370205B1 (en) * 1999-07-02 2002-04-09 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for performing DC-offset compensation in a radio receiver
US6459889B1 (en) * 2000-02-29 2002-10-01 Motorola, Inc. DC offset correction loop for radio receiver

Also Published As

Publication number Publication date
EP1064729A1 (en) 2001-01-03
KR20010071126A (ko) 2001-07-28
HK1039224B (zh) 2005-04-22
EP1064729A4 (en) 2002-10-24
JP4195193B2 (ja) 2008-12-10
WO1999050966A1 (en) 1999-10-07
CN1158780C (zh) 2004-07-21
IL138614A0 (en) 2001-10-31
JP2002510892A (ja) 2002-04-09
AU3128399A (en) 1999-10-18
EP1064729B1 (en) 2005-06-22
EE200000567A (et) 2002-02-15
IL138614A (en) 2005-09-25
DE69925902D1 (de) 2005-07-28
CN1309840A (zh) 2001-08-22
US6606484B1 (en) 2003-08-12
KR100537418B1 (ko) 2005-12-19
AUPP261898A0 (en) 1998-04-23
ATE298474T1 (de) 2005-07-15
HK1039224A1 (en) 2002-04-12

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 12A E 13A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2159 DE 22/05/2012.