H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 23/00 (2006.01) H01Q 3/26 (2006.01) H01Q 3/42 (2006.01) H01Q 21/29 (2006.01)
Patent
CA 2199561
The invention involves a process and a device to delay a modulated radio-frequency signal. For a 0 frequency radiofrequency signal modulated by a modulating frequency signal.
L'invention concerne un procédé et un dispositif de retard d'un signal radiofréquence modulé. Pour un signal radiofréquence de pulsation .omega.0 modulé par un signal modulant de pulsation ~, et à retarder d'une valeur de retard ?, le procédé et le dispositif consistent à appliquer au signal modulant un retard ?' vérifiant la relation (voir fig. I) où k désigne un nombre entier, tout retard appliqué sur le signal radiofréquence modulé étant supprimé. Application à l'émission en radiofréquence numérique D.A.B. à modulation OFDM.
Azot Simon
Garcin Sydney
Goudreau Gage Dubuc
Telediffusion de France
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