Frequency discriminator and heterodyne receiver provided...

Details Frequency discriminator and heterodyne receiver provided... Frequency discriminator and heterodyne receiver provided...

G - Physics

02

F

G02F 2/00 (2006.01) H03D 3/22 (2006.01) H04B 10/148 (2006.01) H03D 9/04 (2006.01)

Patent

CA 2071624

In a frequency discriminator in which it is adapted such that a signal to be subjected to frequency discrimination is divided into two signals and mixed together after one of the divided signals has been given a delay time, the frequency discriminator disclosed is additionally provided with a filter, of which cutoff frequency is set up according to the delay time, disposed in the front stage and, thereby, both improvement of accuracy in frequency identification and expansion of the capture range can be attained.

L'invention est un discriminateur de fréquences adapté de telle façon que les signaux soumis à une discrimination de fréquences sont divisés en deux signaux qui sont ensuite mélangés ensemble après retardement de l'un d'eux. Ce discriminateur de fréquences est doté dans son étage avant d'un filtre dont la fréquence de coupure est établie selon le retard produit, ce qui améliore la précision de la détermination des fréquences et élargit la gamme de saisie.

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