ES2052394T3 - Dispositivo de transposicion de frecuencia con mando automatico de frecuencia. - Google Patents

Dispositivo de transposicion de frecuencia con mando automatico de frecuencia.

Info

Publication number
ES2052394T3
ES2052394T3 ES92103045T ES92103045T ES2052394T3 ES 2052394 T3 ES2052394 T3 ES 2052394T3 ES 92103045 T ES92103045 T ES 92103045T ES 92103045 T ES92103045 T ES 92103045T ES 2052394 T3 ES2052394 T3 ES 2052394T3
Authority
ES
Spain
Prior art keywords
frequency
synthesizer
transposition device
automatic
divider
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
ES92103045T
Other languages
English (en)
Inventor
Jacques Doncker
Gerard Leclerc
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.)
Alcatel CIT SA
Original Assignee
Alcatel Telspace SA
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 Alcatel Telspace SA filed Critical Alcatel Telspace SA
Application granted granted Critical
Publication of ES2052394T3 publication Critical patent/ES2052394T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)
  • Radio Relay Systems (AREA)

Abstract

DISPOSITIVO DE TRANSPOSICION DE FRECUENCIA INTERMEDIA FI, CON C.A.F. QUE UTILIZA, EN EL BUCLE DE FASE (10) DEL SINTETIZADOR (4), LA INTRODUCCION DE UNA SEÑAL DE FRECUENCIA PROPORCIONAL A FI. PARA QUE EL PASO DEL SINTETIZADOR SEA VARIABLE, SE UTILIZA OTRO SINTETIZADOR (23) DE IGUAL PASO QUE EL PRIMERO CUYA FRECUENCIA FO ES AÑADIDA A LA FI INTRODUCIDA PARA REALIZAR EL C.A.F. LA GAMA M DE SU DIVISOR VARIABLE (26) VARIA CORRELATIVAMENTE AL N DEL DIVISOR (11) DEL SINTETIZADOR PRINCIPAL (4). APLICACION: RECEPTORES DE TELEVISION POR SATELITE.
ES92103045T 1991-02-28 1992-02-24 Dispositivo de transposicion de frecuencia con mando automatico de frecuencia. Expired - Lifetime ES2052394T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9102415A FR2673495B1 (fr) 1991-02-28 1991-02-28 Dispositif de transposition de frequence avec commande automatique de frequence.

Publications (1)

Publication Number Publication Date
ES2052394T3 true ES2052394T3 (es) 1994-07-01

Family

ID=9410205

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92103045T Expired - Lifetime ES2052394T3 (es) 1991-02-28 1992-02-24 Dispositivo de transposicion de frecuencia con mando automatico de frecuencia.

Country Status (4)

Country Link
EP (1) EP0501366B1 (es)
DE (1) DE69200098T2 (es)
ES (1) ES2052394T3 (es)
FR (1) FR2673495B1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493700A (en) * 1993-10-29 1996-02-20 Motorola Automatic frequency control apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55147823A (en) * 1979-05-08 1980-11-18 Fujitsu Ten Ltd Electronic tuning circuit
JPS57124921A (en) * 1981-01-26 1982-08-04 Mitsubishi Electric Corp Automatic frequency controlling circuit
JPS57190413A (en) * 1981-05-18 1982-11-24 Matsushita Electric Ind Co Ltd Receiver
JPS58151717A (ja) * 1982-03-05 1983-09-09 Matsushita Electric Ind Co Ltd 掃引受信機

Also Published As

Publication number Publication date
FR2673495A1 (fr) 1992-09-04
FR2673495B1 (fr) 1993-04-30
EP0501366A1 (fr) 1992-09-02
EP0501366B1 (fr) 1994-04-13
DE69200098D1 (de) 1994-05-19
DE69200098T2 (de) 1994-07-28

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