ES2141803T3 - Demodulacion de una señal de fi mediante un convertidor sigma-delta. - Google Patents

Demodulacion de una señal de fi mediante un convertidor sigma-delta.

Info

Publication number
ES2141803T3
ES2141803T3 ES94306649T ES94306649T ES2141803T3 ES 2141803 T3 ES2141803 T3 ES 2141803T3 ES 94306649 T ES94306649 T ES 94306649T ES 94306649 T ES94306649 T ES 94306649T ES 2141803 T3 ES2141803 T3 ES 2141803T3
Authority
ES
Spain
Prior art keywords
sigma
signal
demodulation
delta converter
mixer
Prior art date
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.)
Expired - Lifetime
Application number
ES94306649T
Other languages
English (en)
Inventor
Jaakko Hulkko
Lauri Siren
Veijo Kontas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Oyj
Original Assignee
Nokia Mobile Phones Ltd
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 Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Application granted granted Critical
Publication of ES2141803T3 publication Critical patent/ES2141803T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • 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
    • H03D3/009—Compensating quadrature phase or amplitude imbalances
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • 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
    • H03M3/41—Arrangements specific to bandpass modulators combined with modulation to or demodulation from the carrier
    • 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
    • H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
    • H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path
    • H03M3/454—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with distributed feedback, i.e. with feedback paths from the quantiser output to more than one filter stage

Abstract

SE APLICA UN CONVERTIDOR DE SEÑAL SIGMA -DELTA QUE EMPLEA UN CONDENSADOR CONMUTADO PARA CONMUTAR ELEMENTOS, EN EL QUE UN PRIMER CONMUTADOR (31) SIRVE COMO UN MEZCLADOR (11). LA SALIDA DEL MEZCLADOR SE DIRIGE A LA SEGUNDA ENTRADA DE UN SUMADOR (16), Y SU SEGUNDA ENTRADA ES LA SEÑAL DE REALIMENTACION (F1) DEL CONVERTIDOR DE SEÑAL SIGMA NA SEÑAL DE SALIDA DE FRECUENCIA BASE A TRAVES DE UN DECIMADOR (14) Y UN FILTRO DE PASO BAJO (15).
ES94306649T 1993-09-10 1994-09-09 Demodulacion de una señal de fi mediante un convertidor sigma-delta. Expired - Lifetime ES2141803T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI933989A FI107855B (fi) 1993-09-10 1993-09-10 Vt-signaalin demodulointi sigma-delta-muuntimella

Publications (1)

Publication Number Publication Date
ES2141803T3 true ES2141803T3 (es) 2000-04-01

Family

ID=8538572

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94306649T Expired - Lifetime ES2141803T3 (es) 1993-09-10 1994-09-09 Demodulacion de una señal de fi mediante un convertidor sigma-delta.

Country Status (6)

Country Link
US (1) US5734683A (es)
EP (1) EP0643477B1 (es)
JP (1) JP3809589B2 (es)
DE (1) DE69422109T2 (es)
ES (1) ES2141803T3 (es)
FI (1) FI107855B (es)

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US6518905B2 (en) 2000-12-21 2003-02-11 Wright State University Parallel time interleaved delta sigma modulator
US7031683B2 (en) 2001-01-12 2006-04-18 Silicon Laboratories Inc. Apparatus and methods for calibrating signal-processing circuitry
US7158574B2 (en) 2001-01-12 2007-01-02 Silicon Laboratories Inc. Digital interface in radio-frequency apparatus and associated methods
US7035611B2 (en) 2001-01-12 2006-04-25 Silicon Laboratories Inc. Apparatus and method for front-end circuitry in radio-frequency apparatus
US7177610B2 (en) 2001-01-12 2007-02-13 Silicon Laboratories Inc. Calibrated low-noise current and voltage references and associated methods
US7138858B2 (en) 2001-01-12 2006-11-21 Silicon Laboratories, Inc. Apparatus and methods for output buffer circuitry with constant output power in radio-frequency circuitry
US7248628B2 (en) 2001-03-02 2007-07-24 Shaeffer Derek K Method and apparatus for a programmable filter
US7116728B2 (en) * 2001-05-25 2006-10-03 Matsushita Electric Industrial Co., Ltd. Quadrature alignment in communications receivers using dual delay lines
US6433726B1 (en) * 2001-06-22 2002-08-13 Koninklijke Philips Electronics N.V. Fractional decimation filter using oversampled data
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US7023267B2 (en) * 2004-02-17 2006-04-04 Prophesi Technologies, Inc. Switching power amplifier using a frequency translating delta sigma modulator
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Also Published As

Publication number Publication date
DE69422109D1 (de) 2000-01-20
JPH07154344A (ja) 1995-06-16
FI107855B (fi) 2001-10-15
FI933989A (fi) 1995-03-11
EP0643477A3 (en) 1995-04-05
EP0643477A2 (en) 1995-03-15
FI933989A0 (fi) 1993-09-10
US5734683A (en) 1998-03-31
EP0643477B1 (en) 1999-12-15
JP3809589B2 (ja) 2006-08-16
DE69422109T2 (de) 2000-05-31

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