BR9906807A - Circuito de cancelamento de ruìdo e conversor para recepção em quadratura - Google Patents

Circuito de cancelamento de ruìdo e conversor para recepção em quadratura

Info

Publication number
BR9906807A
BR9906807A BR9906807-9A BR9906807A BR9906807A BR 9906807 A BR9906807 A BR 9906807A BR 9906807 A BR9906807 A BR 9906807A BR 9906807 A BR9906807 A BR 9906807A
Authority
BR
Brazil
Prior art keywords
bandpass
decimalizer
samples
converter
noise cancellation
Prior art date
Application number
BR9906807-9A
Other languages
English (en)
Portuguese (pt)
Inventor
Lennart Karl-Axel Mathe
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR9906807A publication Critical patent/BR9906807A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/322—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M3/324—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement
    • H03M3/344—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by means or methods for compensating or preventing more than one type of error at a time, e.g. by synchronisation or using a ratiometric arrangement by filtering other than the noise-shaping inherent to delta-sigma modulators, e.g. anti-aliasing
    • 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
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/402—Arrangements specific to bandpass modulators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
    • H03M3/414—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having multiple quantisers arranged in cascaded loops, each of the second and further loops processing the quantisation error of the loop preceding it, i.e. multiple stage noise shaping [MASH] type
    • H03M3/418—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having multiple quantisers arranged in cascaded loops, each of the second and further loops processing the quantisation error of the loop preceding it, i.e. multiple stage noise shaping [MASH] type all these quantisers being single bit quantisers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
    • H03M3/462—Details relating to the decimation process

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Noise Elimination (AREA)
  • Analogue/Digital Conversion (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
BR9906807-9A 1998-01-09 1999-01-11 Circuito de cancelamento de ruìdo e conversor para recepção em quadratura BR9906807A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/005,355 US6243430B1 (en) 1998-01-09 1998-01-09 Noise cancellation circuit in a quadrature downconverter
PCT/US1999/000580 WO1999035746A1 (en) 1998-01-09 1999-01-11 Noise cancellation circuit and quadrature downconverter

Publications (1)

Publication Number Publication Date
BR9906807A true BR9906807A (pt) 2001-10-23

Family

ID=21715446

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9906807-9A BR9906807A (pt) 1998-01-09 1999-01-11 Circuito de cancelamento de ruìdo e conversor para recepção em quadratura

Country Status (14)

Country Link
US (1) US6243430B1 (US06243430-20010605-M00001.png)
EP (1) EP1046232B1 (US06243430-20010605-M00001.png)
JP (1) JP4162851B2 (US06243430-20010605-M00001.png)
KR (1) KR100545492B1 (US06243430-20010605-M00001.png)
CN (1) CN1168215C (US06243430-20010605-M00001.png)
AU (1) AU758706B2 (US06243430-20010605-M00001.png)
BR (1) BR9906807A (US06243430-20010605-M00001.png)
CA (1) CA2315758C (US06243430-20010605-M00001.png)
DE (1) DE69924233T2 (US06243430-20010605-M00001.png)
ES (1) ES2237906T3 (US06243430-20010605-M00001.png)
IL (1) IL136712A0 (US06243430-20010605-M00001.png)
NO (1) NO326664B1 (US06243430-20010605-M00001.png)
RU (1) RU2233023C2 (US06243430-20010605-M00001.png)
WO (1) WO1999035746A1 (US06243430-20010605-M00001.png)

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Also Published As

Publication number Publication date
CN1168215C (zh) 2004-09-22
US6243430B1 (en) 2001-06-05
DE69924233D1 (de) 2005-04-21
EP1046232B1 (en) 2005-03-16
DE69924233T2 (de) 2006-03-30
CN1300467A (zh) 2001-06-20
JP4162851B2 (ja) 2008-10-08
NO20003499D0 (no) 2000-07-07
NO326664B1 (no) 2009-01-26
KR20010033989A (ko) 2001-04-25
IL136712A0 (en) 2001-06-14
WO1999035746A1 (en) 1999-07-15
CA2315758A1 (en) 1999-07-15
AU2315699A (en) 1999-07-26
KR100545492B1 (ko) 2006-01-24
CA2315758C (en) 2008-03-18
JP2002501319A (ja) 2002-01-15
EP1046232A1 (en) 2000-10-25
NO20003499L (no) 2000-09-06
ES2237906T3 (es) 2005-08-01
RU2233023C2 (ru) 2004-07-20
AU758706B2 (en) 2003-03-27

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