Surface wave filter having a folded acoustic path

Details Surface wave filter having a folded acoustic path Surface wave filter having a folded acoustic path

H - Electricity

03

H

H03H 9/64 (2006.01) H03H 9/02 (2006.01)

Patent

CA 2121477

Filtre hyperfréquence à ondes acoustiques de surface et à cavités résonnantes longitudinales. Il est constitué de plusieurs voies (V1, V2) en parallèle, qui présentent une différence d'espace inter- transducteurs (2 1-4 1; 2 2-4 2) égale à un multiple pair de demi-longueur d'onde (.lambda.) à la fréquence centrale, d'une voie à l'autre, de façon à annuler la fonction de transfert en ligne à re- tard qui correspond au trajet direct entre transducteurs.

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