ATE398360T1 - Delta-sigma-modulator mit mehreren filtern - Google Patents

Delta-sigma-modulator mit mehreren filtern

Info

Publication number
ATE398360T1
ATE398360T1 AT04725259T AT04725259T ATE398360T1 AT E398360 T1 ATE398360 T1 AT E398360T1 AT 04725259 T AT04725259 T AT 04725259T AT 04725259 T AT04725259 T AT 04725259T AT E398360 T1 ATE398360 T1 AT E398360T1
Authority
AT
Austria
Prior art keywords
quantizer
sigma modulator
multiple filters
delta
fractional
Prior art date
Application number
AT04725259T
Other languages
English (en)
Inventor
Tom Riley
Original Assignee
Kaben Wireless Silicon Inc
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 Kaben Wireless Silicon Inc filed Critical Kaben Wireless Silicon Inc
Application granted granted Critical
Publication of ATE398360T1 publication Critical patent/ATE398360T1/de

Links

Classifications

    • 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
    • H03M7/3026—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 multiple 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
    • H03M7/3042—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 being of the error feedback type, i.e. having loop filter stages in the feedback path only

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Networks Using Active Elements (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
AT04725259T 2004-04-02 2004-04-02 Delta-sigma-modulator mit mehreren filtern ATE398360T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA2004/000510 WO2005096504A1 (en) 2004-04-02 2004-04-02 Delta sigma modulator with multiple filters

Publications (1)

Publication Number Publication Date
ATE398360T1 true ATE398360T1 (de) 2008-07-15

Family

ID=34957242

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04725259T ATE398360T1 (de) 2004-04-02 2004-04-02 Delta-sigma-modulator mit mehreren filtern

Country Status (7)

Country Link
US (1) US7385538B2 (de)
EP (1) EP1738467B1 (de)
CN (1) CN1954500B (de)
AT (1) ATE398360T1 (de)
CA (1) CA2561571C (de)
DE (1) DE602004014415D1 (de)
WO (1) WO2005096504A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102379088B (zh) * 2009-03-31 2015-04-29 艾格瑞系统有限责任公司 通过使用△-∑调制器直接合成rf信号的方法和装置
KR20120125096A (ko) * 2011-05-06 2012-11-14 삼성전자주식회사 디지털 제어 발진기를 포함하는 위상동기루프 회로
US10211848B1 (en) 2018-03-27 2019-02-19 Synaptics Incorporated Delta sigma modulator systems and methods

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392042A (en) * 1993-08-05 1995-02-21 Martin Marietta Corporation Sigma-delta analog-to-digital converter with filtration having controlled pole-zero locations, and apparatus therefor
JP2002504277A (ja) * 1997-04-18 2002-02-05 イェスパー ステーンスガール−メイセン 非線形分離および線形再接合に基づくオーバサンプルされたディジタル・アナログ変換器
DE19851637A1 (de) * 1998-11-10 2000-05-11 Bosch Gmbh Robert Sigma-Delta-Modulator und Verfahren zur Unterdrückung eines Quantisierungsfehlers in einem Sigma-Delta-Modulator
CA2294404C (en) * 2000-01-07 2004-11-02 Skyworks Solutions, Inc. Delta-sigma modulator for fractional-n frequency synthesis
IES20000786A2 (en) * 2000-09-29 2001-10-17 Univ College Cork Nat Univ Ie A subranging sigma delta modulator
US6920182B2 (en) * 2001-01-09 2005-07-19 Microtune (Texas), L.P. Delta-sigma modulator system and method
US6975257B2 (en) * 2001-11-15 2005-12-13 Koninklijke Philips Electronics N.V. Sigma-delta modulation
EP1335494A1 (de) * 2001-12-19 2003-08-13 Siemens Aktiengesellschaft Sigma-Delta-Wandler mit Rauschunterdrückung
DE10233391C1 (de) * 2002-07-23 2003-12-11 Infineon Technologies Ag Analog/Digital-Wandlerschaltung sowie entsprechendes Verfahren zur Analog/Digital-Wandlung und Verwendung einer selbstoszillierenden Schaltung zur Analog/Digital-Wandlung
US6744392B2 (en) * 2002-08-02 2004-06-01 Cirrus Logic, Inc. Noise shapers with shared and independent filters and multiple quantizers and data converters and methods using the same
US6697003B1 (en) * 2003-04-17 2004-02-24 Texas Instruments Incorporated System and method for dynamic element matching

Also Published As

Publication number Publication date
US20070018872A1 (en) 2007-01-25
CA2561571C (en) 2012-03-27
EP1738467A1 (de) 2007-01-03
HK1106077A1 (en) 2008-02-29
US7385538B2 (en) 2008-06-10
CN1954500B (zh) 2010-06-09
WO2005096504A1 (en) 2005-10-13
CA2561571A1 (en) 2005-10-13
CN1954500A (zh) 2007-04-25
EP1738467B1 (de) 2008-06-11
DE602004014415D1 (de) 2008-07-24

Similar Documents

Publication Publication Date Title
TW200721701A (en) Low-pass filter based delta-sigma modulator
DE602006013989D1 (de) Quantisierer-überlastverhinderung für delta-sigma-modulatoren des rückkopplungstyps
UA91853C2 (ru) Способ и устройство для векторного квантования спектрального представления огибающей
CN102163975B (zh) 高解析度三角积分数字至模拟转换器及其操作方法
TW200623655A (en) Digital delta sigma modulator and applications thereof
ATE537607T1 (de) Multi-bit-sigma-delta-modulator mit reduzierter bitzahl im rückkopplungpfad
SG161223A1 (en) Method and apparatus for vector quantizing of a spectral envelope representation
AR097970A2 (es) Codificador de audio y método para codificar una señal de audio
WO2008033686A3 (en) Analog-to-digital converter (adc) having a reduced number of quantizer output levels
WO2015200267A3 (en) Systems and methods for compressing a digital signal
ATE525808T1 (de) Adaptive digital-analog-umsetzung hoher ordnung
WO2007092661A3 (en) Variable length coding for sparse coefficients
ATE441980T1 (de) Digitale sigma-delta-modulatoren
ATE325468T1 (de) Sigma-delta modulation
US8681029B1 (en) Chopper-stabilization method and apparatus for sigma delta modulators
EP2871778A3 (de) Ausgangspegelreduzierung für Integrator
WO2008032046A3 (en) A random number generator
TW200635239A (en) Fast compact decoder for huffman codes
CN105187068B (zh) 一种调制电路和调制方法
ATE398360T1 (de) Delta-sigma-modulator mit mehreren filtern
TW200603074A (en) Audio coding device and method
TW200742274A (en) Sigma-delta modulator
WO2008102091A3 (fr) Procede de traitement d'un signal numerique au sein d'un modulateur delta-sigma numerique, et modulateur delta-sigma numerique correspondant.
WO2008012904A1 (en) Pwm signal generator, pwm signal generating device, and digital amplifier
WO2014180202A1 (zh) 一种Delta Sigma调制器及其实现调制的方法

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties