CH676405A5 - - Google Patents

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Publication number
CH676405A5
CH676405A5 CH432188A CH432188A CH676405A5 CH 676405 A5 CH676405 A5 CH 676405A5 CH 432188 A CH432188 A CH 432188A CH 432188 A CH432188 A CH 432188A CH 676405 A5 CH676405 A5 CH 676405A5
Authority
CH
Switzerland
Prior art keywords
signals
signal
amplitude
equation
phase
Prior art date
Application number
CH432188A
Other languages
German (de)
English (en)
Inventor
Urs Bolliger
Walter Vollenweider
Original Assignee
Ascom Radiocom Ag
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 Ascom Radiocom Ag filed Critical Ascom Radiocom Ag
Priority to CH432188A priority Critical patent/CH676405A5/de
Priority to DE19893938671 priority patent/DE3938671C2/de
Publication of CH676405A5 publication Critical patent/CH676405A5/de

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
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0041—Functional aspects of demodulators
    • H03D2200/0047—Offset of DC voltage or frequency
    • 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
    • H03D3/006—Demodulation of angle-, frequency- or phase- modulated oscillations by sampling the oscillations and further processing the samples, e.g. by computing techniques
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
CH432188A 1988-11-22 1988-11-22 CH676405A5 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH432188A CH676405A5 (zh) 1988-11-22 1988-11-22
DE19893938671 DE3938671C2 (de) 1988-11-22 1989-11-21 Verfahren zum Korrigieren von Amplituden- und Phasenfehlern in einem Direct-Conversion-Empfänger und Empfänger zum Durchführen des Verfahrens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH432188A CH676405A5 (zh) 1988-11-22 1988-11-22

Publications (1)

Publication Number Publication Date
CH676405A5 true CH676405A5 (zh) 1991-01-15

Family

ID=4273905

Family Applications (1)

Application Number Title Priority Date Filing Date
CH432188A CH676405A5 (zh) 1988-11-22 1988-11-22

Country Status (2)

Country Link
CH (1) CH676405A5 (zh)
DE (1) DE3938671C2 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095536A (en) * 1990-03-23 1992-03-10 Rockwell International Corporation Direct conversion receiver with tri-phase architecture
US5230099A (en) * 1991-01-24 1993-07-20 Rockwell International Corporation System for controlling phase and gain errors in an i/q direct conversion receiver
US5249203A (en) * 1991-02-25 1993-09-28 Rockwell International Corporation Phase and gain error control system for use in an i/q direct conversion receiver
FR2682249B1 (fr) * 1991-10-08 1993-12-03 Thomson Csf Procede de demodulation numerique d'un signal composite.
DE4236547C2 (de) * 1992-10-29 1994-09-29 Hagenuk Telecom Gmbh Homodynempfänger und Verfahren zur Korrektur des konvertierten Empfangssignals
DE4238543C1 (de) * 1992-11-14 1994-05-05 Hagenuk Telecom Gmbh Verfahren und Vorrichtung zur Korrektur der Phasen- und Amplitudenfehler bei direktmischenden Empfangseinrichtungen
DE4238542C1 (de) * 1992-11-14 1994-06-09 Hagenuk Telecom Gmbh Verfahren und Vorrichtung zur Korrektur von Gleichspannungs-Fehlersignalen bei direktmischenden Empfangseinrichtungen
JPH09145756A (ja) * 1995-11-21 1997-06-06 Advantest Corp 直交検波器の振幅誤差補正方法及び直交検波器
JP2009503979A (ja) * 2005-07-25 2009-01-29 エヌエックスピー ビー ヴィ 振幅被変調信号用受信機

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2106734B (en) * 1981-09-15 1986-01-15 Standard Telephones Cables Ltd Radio receiver
GB2166324A (en) * 1984-10-25 1986-04-30 Stc Plc A multi-mode radio transceiver

Also Published As

Publication number Publication date
DE3938671C2 (de) 1999-02-25
DE3938671A1 (de) 1990-05-23

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Legal Events

Date Code Title Description
PL Patent ceased