H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 27/148 (2006.01) H04L 27/152 (2006.01)
Patent
CA 2251406
A FSK demodulator which uses the combination of a digital phase comparator and a digital controlled oscillator (DCO) in the form of a state machine to demodulate an FSK signal. The phase comparator compares the phase of the FSK signal with the output of the DCO to provide a signal to the DCO having a level dependent on the phase relationship between the two signals at the input to the comparator. The demodulator also includes a filter to obtain the data from the signal at the output of the comparator.
Démodulateur FSK combinant un comparateur de phase numérique et un oscillateur à commande numérique (DCO) sous la forme d'un automate fini afin de démoduler un signal FSK. Le comparateur de phase compare la phase du signal FSK avec la sortie du DCO afin de transmettre au DCO un signal dont le niveau dépend de la relation de phase qui existe entre les deux signaux à l'entrée du comparateur. En outre, le démodulateur comprend un filtre permettant d'obtenir les données du signal à la sortie du comparateur.
Elsag International N.v.
Ridout & Maybee Llp
LandOfFree
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