AU751275B2 - Apparatus and method for the reduction of periodic noise in a sigma-delta modulator - Google Patents

Apparatus and method for the reduction of periodic noise in a sigma-delta modulator Download PDF

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Publication number
AU751275B2
AU751275B2 AU77938/98A AU7793898A AU751275B2 AU 751275 B2 AU751275 B2 AU 751275B2 AU 77938/98 A AU77938/98 A AU 77938/98A AU 7793898 A AU7793898 A AU 7793898A AU 751275 B2 AU751275 B2 AU 751275B2
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AU
Australia
Prior art keywords
signal
sigma
constituted
time discrete
integrated
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Legal status (The legal status 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 status listed.)
Ceased
Application number
AU77938/98A
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English (en)
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AU7793898A (en
Inventor
Mats Olof Frannhagen
Per Henrik Fremrot
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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Publication of AU7793898A publication Critical patent/AU7793898A/en
Application granted granted Critical
Publication of AU751275B2 publication Critical patent/AU751275B2/en
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) reassignment TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) Request to Amend Deed and Register Assignors: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/02—Delta modulation, i.e. one-bit differential modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3006—Compensating for, or preventing of, undesired influence of physical parameters
    • H03M7/3008—Compensating for, or preventing of, undesired influence of physical parameters by averaging out the errors, e.g. using dither
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/302—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M7/3024—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
    • H03M7/3028—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
    • H03M7/3033—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs
    • H03M7/304—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs with distributed feedback, i.e. with feedback paths from the quantiser output to more than one filter stage

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
AU77938/98A 1997-05-27 1998-05-26 Apparatus and method for the reduction of periodic noise in a sigma-delta modulator Ceased AU751275B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9701986 1997-05-27
SE9701986A SE509408C2 (sv) 1997-05-27 1997-05-27 Anordning och förfarande för reducering av periodiskt brus i en sigma-delta modulator
PCT/SE1998/000990 WO1998054840A2 (en) 1997-05-27 1998-05-26 Apparatus and method for the reduction of periodic noise in a sigma-delta modulator

Publications (2)

Publication Number Publication Date
AU7793898A AU7793898A (en) 1998-12-30
AU751275B2 true AU751275B2 (en) 2002-08-08

Family

ID=20407109

Family Applications (1)

Application Number Title Priority Date Filing Date
AU77938/98A Ceased AU751275B2 (en) 1997-05-27 1998-05-26 Apparatus and method for the reduction of periodic noise in a sigma-delta modulator

Country Status (12)

Country Link
US (1) US6175321B1 (enExample)
EP (1) EP1080534B1 (enExample)
JP (1) JP4027434B2 (enExample)
KR (1) KR20010013111A (enExample)
CN (1) CN1260913A (enExample)
AR (1) AR012873A1 (enExample)
AU (1) AU751275B2 (enExample)
BR (1) BR9809163A (enExample)
CO (1) CO4790202A1 (enExample)
EE (1) EE03500B1 (enExample)
SE (1) SE509408C2 (enExample)
WO (1) WO1998054840A2 (enExample)

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WO2001037016A1 (en) 1999-11-19 2001-05-25 New Focus, Inc. Method and apparatus for an electro optic converter
US6456223B1 (en) * 1999-12-28 2002-09-24 Texas Instruments Incorporated Pipelined analog to digital converter using digital mismatch noise cancellation
US6897772B1 (en) * 2000-11-14 2005-05-24 Honeywell International, Inc. Multi-function control system
JP4649777B2 (ja) * 2001-02-09 2011-03-16 ソニー株式会社 デルタシグマ変調装置及び方法、並びにデジタル信号処理装置及び方法
US6823033B2 (en) * 2002-03-12 2004-11-23 Qualcomm Inc. ΣΔdelta modulator controlled phase locked loop with a noise shaped dither
TWI235000B (en) * 2002-09-24 2005-06-21 Mstar Semiconductor Inc Apparatus and method for masking interference noise contained in signal source
US20040141559A1 (en) * 2002-10-24 2004-07-22 Tewfik Ahmed H. Generating UWB-OFDM signal using sigma-delta modulator
DE60328925D1 (de) * 2002-12-24 2009-10-01 Fujitsu Microelectronics Ltd Jittergenerator
US7561635B2 (en) * 2003-08-05 2009-07-14 Stmicroelectronics Nv Variable coder apparatus for resonant power conversion and method
EP1612946B1 (en) * 2004-07-01 2007-03-21 Ericsson Technology Licensing AB Apparatus comprising a sigma-delta modulator and method of generating a quantized signal in a sigma-delta modulator
KR101156877B1 (ko) 2004-07-01 2012-06-20 텔레폰악티에볼라겟엘엠에릭슨(펍) 시그마-델타 변조기를 포함하는 장치 및 시그마-델타변조기에서 양자화된 신호를 발생시키는 방법
US6980145B1 (en) * 2004-07-30 2005-12-27 Broadcom Corporation System and method for noise cancellation in a signal processing circuit
US7362250B2 (en) * 2005-01-31 2008-04-22 Texas Instruments Incorporated Dynamic dither for sigma-delta converters
GB0514677D0 (en) * 2005-07-18 2005-08-24 Queen Mary & Westfield College Sigma delta modulators
EP1946445A4 (en) * 2005-09-23 2009-02-04 Univ Rochester SIGMA-DELTA ANALOGUE-DIGITAL CONVERTER MODULATED BY BLUE NOISE
US7215267B1 (en) * 2005-12-19 2007-05-08 Cirrus Logic, Inc. Analog-to-digital converter with dither control
US7538701B2 (en) * 2006-06-08 2009-05-26 Cosmic Circuits Private Limited System and method for improving dynamic performance of a circuit
JP2009088924A (ja) 2007-09-28 2009-04-23 Fujitsu Ltd 信号変調方法、信号変調装置、電子装置および信号変調プログラム
JP4856659B2 (ja) * 2008-01-30 2012-01-18 ルネサスエレクトロニクス株式会社 半導体集積回路装置
KR101182407B1 (ko) 2008-12-22 2012-09-13 한국전자통신연구원 펄스 생성기 및 연속시간 시그마-델타 변조기
US8866655B2 (en) * 2012-08-10 2014-10-21 Infineon Technologies Ag Modulator with variable quantizer
EP3694109B1 (en) * 2014-02-25 2023-05-03 ams AG Microphone arrangement
US11121718B1 (en) * 2020-08-12 2021-09-14 Analog Devices International Unlimited Company Multi-stage sigma-delta analog-to-digital converter with dither
CN114095030B (zh) * 2021-10-14 2025-09-16 中国兵器工业集团第二一四研究所苏州研发中心 一种全差分带弦音消除的sigma-delta ADC

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709969A2 (en) * 1991-05-21 1996-05-01 AT&T Corp. Sigma-delta modulator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999129A (en) * 1975-04-16 1976-12-21 Rolm Corporation Method and apparatus for error reduction in digital information transmission systems
JPS62140518A (ja) * 1985-12-13 1987-06-24 Advantest Corp Ａｄ変換装置
US5010347A (en) 1987-09-25 1991-04-23 Nec Corporation Analog-to-digital converter having an excellent signal-to-noise ratio for small signals
JP2647136B2 (ja) * 1988-05-13 1997-08-27 株式会社東芝 アナログ−デジタル変換回路
JP3012887B2 (ja) * 1989-03-13 2000-02-28 日本テキサス・インスツルメンツ株式会社 信号変換装置
US5055843A (en) * 1990-01-31 1991-10-08 Analog Devices, Inc. Sigma delta modulator with distributed prefiltering and feedback

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0709969A2 (en) * 1991-05-21 1996-05-01 AT&T Corp. Sigma-delta modulator

Also Published As

Publication number Publication date
AU7793898A (en) 1998-12-30
EE9900536A (et) 2000-06-15
JP2002502565A (ja) 2002-01-22
CO4790202A1 (es) 1999-05-31
EP1080534A2 (en) 2001-03-07
SE9701986L (sv) 1998-11-28
WO1998054840A3 (en) 1999-03-11
BR9809163A (pt) 2000-08-01
EE03500B1 (et) 2001-08-15
WO1998054840A2 (en) 1998-12-03
SE509408C2 (sv) 1999-01-25
AR012873A1 (es) 2000-11-22
CN1260913A (zh) 2000-07-19
JP4027434B2 (ja) 2007-12-26
US6175321B1 (en) 2001-01-16
EP1080534B1 (en) 2006-02-22
SE9701986D0 (sv) 1997-05-27
KR20010013111A (ko) 2001-02-26

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PC Assignment registered

Owner name: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Free format text: FORMER OWNER WAS: TELEFONAKTIEBOLAGET LM ERICSSON