ES2035137T3 - Demodulador para la demodulacion de senales de entrada. - Google Patents

Demodulador para la demodulacion de senales de entrada.

Info

Publication number
ES2035137T3
ES2035137T3 ES198888106347T ES88106347T ES2035137T3 ES 2035137 T3 ES2035137 T3 ES 2035137T3 ES 198888106347 T ES198888106347 T ES 198888106347T ES 88106347 T ES88106347 T ES 88106347T ES 2035137 T3 ES2035137 T3 ES 2035137T3
Authority
ES
Spain
Prior art keywords
vrf
carrier
demodulator
demodulation
costas
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
ES198888106347T
Other languages
English (en)
Inventor
Wilhelm Hegeler
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.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke GmbH
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 Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Application granted granted Critical
Publication of ES2035137T3 publication Critical patent/ES2035137T3/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
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H03D1/2245—Homodyne or synchrodyne circuits using two quadrature channels
    • H03D1/2254—Homodyne or synchrodyne circuits using two quadrature channels and a phase locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
    • H04H20/34—Arrangements for simultaneous broadcast of plural pieces of information by plural channels using an out-of-band subcarrier signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • 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
    • H03D2200/0001—Circuit elements of demodulators
    • H03D2200/0031—PLL circuits with quadrature locking, e.g. a Costas loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Communication Control (AREA)

Abstract

CON UN DEMODULADOR PARA LA DEMODULACION VRF Y DRS, TIENE QUE SER LA SEÑAL RDS SIEMPRE DE QUITA DE UNA BORNA DE SALIDA DETERMINADA, INDEPENDIENTE DE ESTO, QUE EL PORTADOR VRF EXISTE O NO EXISTE. POR ESO EL DEMODULADOR ESTA CONSTRUIDO SEGUN EL PRINCIPIO DE UNA CONEXION - COSTAS - COOP, CON LO CUAL SE INVERTA LA MAGNITUD DE MANDO DEL COSTA - LOOP PARA EL OSCILADOR, EN CUANTO EXISTE UN PORTADOR - VRF. CUANDO EL PORTADOR - VRF PROPIO DEBE SER ANALIZADO CON EL FIN DE UNA DEMODULACION , EXISTE LA DESVENTAJA DE UN DOBLE SENTIDO, PORQUE LA CONEXION CONSTA ENCLAVA SOLO INEQUIVOCO MODULO. PARA QUITAR ESTE PROBLEMA SE CONMUTAN LAS MAGNITUDES DE MANDO, EN DEPENCIA QUE EXISTE UN PORTADOR - VRF O NO, ASI QUE ESTA DADO UNA VEZ LA MANERA DE ACTUAR - COSTA Y UNA VEZ LA MANERA DE ACTUAR - PLL USUAL, CON LA CUAL LA FASE DE ENCLAVAR ESTABLE ESTA INEQUIVOCO MODULO 2.
ES198888106347T 1987-05-09 1988-04-21 Demodulador para la demodulacion de senales de entrada. Expired - Lifetime ES2035137T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3715571A DE3715571A1 (de) 1987-05-09 1987-05-09 Demodulator zur demodulation von eingangssignalen

Publications (1)

Publication Number Publication Date
ES2035137T3 true ES2035137T3 (es) 1993-04-16

Family

ID=6327218

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198888106347T Expired - Lifetime ES2035137T3 (es) 1987-05-09 1988-04-21 Demodulador para la demodulacion de senales de entrada.

Country Status (5)

Country Link
EP (1) EP0290830B1 (es)
JP (1) JPS63294016A (es)
AT (1) ATE81234T1 (es)
DE (2) DE3715571A1 (es)
ES (1) ES2035137T3 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0771050B2 (ja) * 1987-03-18 1995-07-31 三洋電機株式会社 副搬送波同期回路
JP2572986B2 (ja) * 1987-06-03 1997-01-16 三洋電機株式会社 復調回路
DE10111590B4 (de) 2001-03-10 2004-05-06 Harman Becker Automotive Systems (Becker Division) Gmbh Verfahren und Schaltungsanordnung zur Demodulation des RDS-Signals

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433592A1 (de) * 1984-09-13 1986-03-20 Blaupunkt-Werke Gmbh, 3200 Hildesheim Verfahren zur demodulation amplitudenmodulierter eingangssignale mit unterdruecktem traeger und schaltungsanordnung hierfuer
DE3516282A1 (de) * 1985-05-07 1986-11-13 Blaupunkt Werke Gmbh Digitaler demodulator
DE3624529A1 (de) * 1986-07-19 1988-01-21 Blaupunkt Werke Gmbh Digitaler demodulator
DE3627007A1 (de) * 1986-08-09 1988-02-18 Blaupunkt Werke Gmbh Demodulator zur demodulation von eingangssignalen
JPH0771050B2 (ja) * 1987-03-18 1995-07-31 三洋電機株式会社 副搬送波同期回路

Also Published As

Publication number Publication date
ATE81234T1 (de) 1992-10-15
JPS63294016A (ja) 1988-11-30
DE3715571A1 (de) 1988-12-08
EP0290830B1 (de) 1992-09-30
DE3874952D1 (de) 1992-11-05
EP0290830A2 (de) 1988-11-17
EP0290830A3 (en) 1989-10-25

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