A dual mode surface acoustic wave filter with improved...

Details A dual mode surface acoustic wave filter with improved... A dual mode surface acoustic wave filter with improved...

H - Electricity

03

H

H03H 9/64 (2006.01) H03H 9/00 (2006.01)

Patent

CA 2403770

A DMS filter is disclosed, with a first and second inter-digital converter as signal input or output, arranged between reflector structures, whereby at least one acoustic track has a mid-converter split into part converters, symmetrically arranged about the perpendicular to the propagating direction. The DMS filter is linked to a housing with connector pads or pins in a symmetrical manner, such that an axially symmetrical connection layout is achieved.

L'invention concerne un filtre à ondes de surface bimode comportant des premiers et des deuxièmes transducteurs interdigités qui servent d'entrée ou de sortie de signaux et se trouvent entre des structures de réflecteur. Au moins une piste acoustique présente un transducteur central divisé en transducteurs partiels, symétriquement à la perpendiculaire au sens de propagation des ondes. Ce filtre est raccordé de manière symétrique à un boîtier comportant des plages ou des broches de connexion, de sorte que les connexions sont placées de manière symétrique par rapport à une droite.

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