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MODULATION FREQUENCE ECRETEE [2 records]

Record 1 2001-07-18

English

Subject field(s)
  • Telecommunications
  • Telecommunications Transmission
DEF

A form of frequency modulation in which the phase changes are smoothed considerably with respect to frequency shift keying without loss of information. In this way are avoided the phase discontinuities which cause out-of-band radiation.

French

Domaine(s)
  • Télécommunications
  • Transmission (Télécommunications)

Spanish

Campo(s) temático(s)
  • Telecomunicaciones
  • Transmisión (Telecomunicaciones)
DEF

Método de modulación de frecuencia en el que los cambios de fase se igualan considerablemente con respecto a la modulación por desplazamiento de frecuencia sin pérdida de información [evitando], de este modo, [...] las discontinuidades de fase que provocan.

Save record 1

Record 2 1981-08-28

English

Subject field(s)
  • Radio Broadcasting
  • Telecommunications
OBS

The reduced carrier single sideband system (RC-SSB). During the Technical Committee Meeting in 1968 of the European Broadcasting Union (EBU) a paper was presented describing the principle of reduced carrier transmission in MF broadcasting. Philips' Telecommunicatie Industrie BV developed a receiver working with a carrier reduction of 14 dB; this carrier was filtered from the output of the intermediate frequency (IF) stage and clipped.

French

Domaine(s)
  • Radiodiffusion
  • Télécommunications
OBS

Le système à bande latérale unique et porteuse réduite(BLU-PR). Au cours de sa réunion de 1968, le Comité technique de l'Union européenne de radiodiffusion(UER) a étudié un document exposant les principes de la transmission à porteuse réduit en radiodiffusion à modulation de fréquence. Philips’ Telecommunicatie Industrie BV a conçu un récepteur fonctionnant avec une porteuse réduite de 14 dB; cette porteuse est filtrée à la sortie de l'étage à fréquence intermédiaire(FI) et écrêtée.

Spanish

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