FR2555847B1 - Filtre de preselection de canaux, notamment pour recepteur de television operant dans une bande etendue de frequences - Google Patents

Filtre de preselection de canaux, notamment pour recepteur de television operant dans une bande etendue de frequences

Info

Publication number
FR2555847B1
FR2555847B1 FR8318804A FR8318804A FR2555847B1 FR 2555847 B1 FR2555847 B1 FR 2555847B1 FR 8318804 A FR8318804 A FR 8318804A FR 8318804 A FR8318804 A FR 8318804A FR 2555847 B1 FR2555847 B1 FR 2555847B1
Authority
FR
France
Prior art keywords
frequencies
television receiver
broad band
receiver operating
preselection filter
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
Application number
FR8318804A
Other languages
English (en)
Other versions
FR2555847A1 (fr
Inventor
Robert Monjanel
Jacques Letessier
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.)
Radiotechnique SA
Original Assignee
Radiotechnique 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 Radiotechnique SA filed Critical Radiotechnique SA
Priority to FR8318804A priority Critical patent/FR2555847B1/fr
Publication of FR2555847A1 publication Critical patent/FR2555847A1/fr
Application granted granted Critical
Publication of FR2555847B1 publication Critical patent/FR2555847B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
FR8318804A 1983-11-25 1983-11-25 Filtre de preselection de canaux, notamment pour recepteur de television operant dans une bande etendue de frequences Expired FR2555847B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8318804A FR2555847B1 (fr) 1983-11-25 1983-11-25 Filtre de preselection de canaux, notamment pour recepteur de television operant dans une bande etendue de frequences

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8318804A FR2555847B1 (fr) 1983-11-25 1983-11-25 Filtre de preselection de canaux, notamment pour recepteur de television operant dans une bande etendue de frequences

Publications (2)

Publication Number Publication Date
FR2555847A1 FR2555847A1 (fr) 1985-05-31
FR2555847B1 true FR2555847B1 (fr) 1987-03-20

Family

ID=9294512

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8318804A Expired FR2555847B1 (fr) 1983-11-25 1983-11-25 Filtre de preselection de canaux, notamment pour recepteur de television operant dans une bande etendue de frequences

Country Status (1)

Country Link
FR (1) FR2555847B1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586871A1 (fr) * 1985-09-03 1987-03-06 Portenseigne Sa Dispositif d'amelioration du rapport signal/bruit dans un demodulateur de frequence.
GB2213005A (en) * 1987-11-27 1989-08-02 Philips Electronic Associated Bandpass filter circuit arrangement
GB2213004A (en) * 1987-11-27 1989-08-02 Philips Electronic Associated Bandpass filter circuit arrangement
FR2688955B1 (fr) * 1992-03-17 1996-11-15 Thomson Csf Filtre accordable haute frequence.
GB2402563A (en) * 2003-06-06 2004-12-08 Motorola Inc Improved preselector filters for RF receivers
WO2008108201A1 (fr) * 2007-03-06 2008-09-12 Nihon Dempa Kogyo Co., Ltd. Circuit d'oscillation commandé en tension haute fréquence

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110004A (en) * 1961-04-21 1963-11-05 Avco Corp Frequency selector using voltage-sensitive capacitors for tuning and bandwidth control
US3196368A (en) * 1961-12-26 1965-07-20 Rca Corp Wide angle phase shifter or modulator
FR1328132A (fr) * 1962-07-05 1963-05-24 Int Standard Electric Corp Perfectionnements aux récepteurs radioélectriques
DE1919625B2 (de) * 1969-04-22 1977-01-20 Philips Patentverwaltung Gmbh, 2000 Hamburg Empfaenger-eingangsschaltung, insbesondere fuer mittelwelle
US4002986A (en) * 1975-03-27 1977-01-11 Zenith Radio Corporation Television receiver with tuner capable of receiving air and CATV signals

Also Published As

Publication number Publication date
FR2555847A1 (fr) 1985-05-31

Similar Documents

Publication Publication Date Title
FR2527406B1 (fr) Oscillateur local uhf a frequence variable pour recepteur de television
IT1167616B (it) Ricevitore digitale
ES2115514B1 (es) Metodo y aparato para identificar canales de señalizacion.
FR2546340B1 (fr) Filtre hyperfrequence coupe-bande accordable, de type coaxial, a resonateurs dielectriques
FR2555847B1 (fr) Filtre de preselection de canaux, notamment pour recepteur de television operant dans une bande etendue de frequences
NO892788L (no) Lydkanalkrets for digitale fjernsynsmottagere.
DE69026373D1 (de) Filterkreis für digitale Signale
DK73983A (da) Fm-modtager med en frekvenslaast sloejfe
DE69115593T2 (de) Unterbrechung des ZF-Videosignalwegs während der FM-Rundfunkbetriebsart in einem Fernsehempfänger
BR7804326A (pt) Dispositivo para filtrar um canal de frequencia,receptor de televisao aperfeicoado,e seletor de canais
GB8304756D0 (en) Receiver including fet frequency mixer
DK164013C (da) Oscillatorkredsloeb til fjernsynsmodtageapparater
ES534134A0 (es) Dispositivo de sintonizacion de radiofrecuencia
DE3381672D1 (de) Digitale fernsehempfaenger.
FR2347825A1 (fr) Selecteur de canaux pour recepteur de television
DK534777A (da) Taellekobling til bestemmelse af modtagefrekvensen subsidiaert modtagekanalen i en superheterodynmodtager
JPS57184394A (en) Method and device for mixing low frequency signals transmitted in digital format through different time division channel toward telephone
FR2343323A1 (fr) Commutateur a declic notamment pour recepteurs de television et de radio
DE3372433D1 (en) Digital filter integrated circuit for the luminance channel of a colour television receiver
IT1212744B (it) Circuito per l'attenuazione dei disturbi in un radioricevitore mediante l'impiego di un filtro passa-basso a banda passante regolabile.
FR2298227A1 (fr) Discriminateur de frequence notamment pour recepteur de television de type secam
BE874754A (fr) Filtre passe-bas pour bande telephonique
FR2525059B1 (fr) Recepteur de television destine a demoduler un signal stereophonique diffuse
ES533166A0 (es) Dispositivo de conexion de sintonizacion para los alcances de frecuencia de uhf y de vhf de television
GB8530190D0 (en) Radio frequency filter

Legal Events

Date Code Title Description
TP Transmission of property
CD Change of name or company name
CD Change of name or company name
ST Notification of lapse