Surface acoustic wave filter

Details Surface acoustic wave filter Surface acoustic wave filter

2006-09-12

2006-09-12

Takaoka, Dean (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S194000, C310S31300R, C310S348000

Reexamination Certificate

active

07106150

ABSTRACT:
A surface acoustic wave filter with little electromagnetic coupling between wires and improved attenuation characteristics is provided. This surface acoustic wave filter comprises: a package having a concavity in the shape of stairs made by laminating dielectrics, a surface acoustic wave element provided on the bottom face of the concavity, a plurality of wires for connecting between a plurality of electrodes provided on the surface of the surface acoustic wave element and a plurality of electrodes provided on one same plane portion of the stairs of the package in correspondence to a plurality of electrodes, and a dummy wire provided between the wires.

REFERENCES:
patent: 6034578 (2000-03-01), Fujita et al.
patent: 6150904 (2000-11-01), Taniguchi et al.
patent: 6480077 (2002-11-01), Ohashi
patent: 6879488 (2005-04-01), Takeda et al.
patent: 06-164309 (1994-06-01), None

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