DE69422109T2 - Demodulation eines Zwischenfrequenzsignals durch einen Sigma-Delta Umsetzer - Google Patents

Demodulation eines Zwischenfrequenzsignals durch einen Sigma-Delta Umsetzer

Info

Publication number
DE69422109T2
DE69422109T2 DE69422109T DE69422109T DE69422109T2 DE 69422109 T2 DE69422109 T2 DE 69422109T2 DE 69422109 T DE69422109 T DE 69422109T DE 69422109 T DE69422109 T DE 69422109T DE 69422109 T2 DE69422109 T2 DE 69422109T2
Authority
DE
Germany
Prior art keywords
demodulation
sigma
frequency signal
intermediate frequency
delta converter
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
DE69422109T
Other languages
English (en)
Other versions
DE69422109D1 (de
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
Publication of DE69422109D1 publication Critical patent/DE69422109D1/de
Application granted granted Critical
Publication of DE69422109T2 publication Critical patent/DE69422109T2/de
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
DE69422109T 1993-09-10 1994-09-09 Demodulation eines Zwischenfrequenzsignals durch einen Sigma-Delta Umsetzer Expired - Lifetime DE69422109T2 (de)

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 (2)

Publication Number Publication Date
DE69422109D1 DE69422109D1 (de) 2000-01-20
DE69422109T2 true DE69422109T2 (de) 2000-05-31

Family

ID=8538572

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69422109T Expired - Lifetime DE69422109T2 (de) 1993-09-10 1994-09-09 Demodulation eines Zwischenfrequenzsignals durch einen Sigma-Delta Umsetzer

Country Status (6)

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

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DE10342056A1 (de) * 2003-09-11 2005-04-14 Infineon Technologies Ag Additionsschaltung für Sigma-Delta-Modulatorschaltungen

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US6879817B1 (en) * 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
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US7110435B1 (en) * 1999-03-15 2006-09-19 Parkervision, Inc. Spread spectrum applications of universal frequency translation
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US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
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US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
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US6639946B2 (en) 2000-12-01 2003-10-28 International Business Machines Corporation Sigma delta modulator with SAW filter
US6518905B2 (en) 2000-12-21 2003-02-11 Wright State University Parallel time interleaved delta sigma modulator
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
US7158574B2 (en) 2001-01-12 2007-01-02 Silicon Laboratories Inc. Digital interface in radio-frequency apparatus and associated methods
US7031683B2 (en) 2001-01-12 2006-04-18 Silicon Laboratories Inc. Apparatus and methods for calibrating signal-processing circuitry
US7177610B2 (en) 2001-01-12 2007-02-13 Silicon Laboratories Inc. Calibrated low-noise current and voltage references 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
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
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US6775530B2 (en) 2001-11-27 2004-08-10 Qualcomm Inc. Direct conversion of narrow-band RF signals
US8467483B2 (en) 2002-03-15 2013-06-18 Silicon Laboratories Inc. Radio-frequency apparatus and associated methods
US7321640B2 (en) * 2002-06-07 2008-01-22 Parkervision, Inc. Active polyphase inverter filter for quadrature signal generation
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US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7023267B2 (en) * 2004-02-17 2006-04-04 Prophesi Technologies, Inc. Switching power amplifier using a frequency translating delta sigma modulator
US20090102546A1 (en) * 2006-03-17 2009-04-23 Hiroshi Miyagi Composite band-pass filter and method of filtering quadrature signals
DE602007011031D1 (de) * 2007-02-15 2011-01-20 St Microelectronics Srl Volldifferentieller Demodulator mit variabler Verstärkung und Demodulationsverfahren eines Signals
US8130020B2 (en) 2008-05-13 2012-03-06 Qualcomm Incorporated Switched-capacitor decimator
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10342056A1 (de) * 2003-09-11 2005-04-14 Infineon Technologies Ag Additionsschaltung für Sigma-Delta-Modulatorschaltungen
DE10342056B4 (de) * 2003-09-11 2005-11-10 Infineon Technologies Ag Additionsschaltung für Sigma-Delta-Modulatorschaltungen

Also Published As

Publication number Publication date
FI933989A0 (fi) 1993-09-10
DE69422109D1 (de) 2000-01-20
JP3809589B2 (ja) 2006-08-16
ES2141803T3 (es) 2000-04-01
EP0643477B1 (de) 1999-12-15
JPH07154344A (ja) 1995-06-16
US5734683A (en) 1998-03-31
FI933989A (fi) 1995-03-11
FI107855B (fi) 2001-10-15
EP0643477A2 (de) 1995-03-15
EP0643477A3 (en) 1995-04-05

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: BECKER, KURIG, STRAUS, 80336 MUENCHEN