Surface acoustic wave device having connection between...

Details Surface acoustic wave device having connection between... Surface acoustic wave device having connection between...

2005-09-20

2005-09-20

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S195000, C310S31300R

Reexamination Certificate

active

06946929

ABSTRACT:
A surface acoustic wave device comprises: a plurality of surface acoustic wave elements provided on a piezoelectric substrate to be electrically isolated with each other, a substrate provided with a first conductor electrically connecting the plurality of surface acoustic wave elements, a second conductor electrically isolated to the first conductor and an external terminal, and a sealing member for protecting the substrate and the piezoelectric substrate. For the substrate, a package having a recess or an insulating substrate is used. The first conductor is electrically isolated to the external terminal, while the second conductor is electrically connected with the external terminal. The above-described structure provides a small-sized surface acoustic wave device with excellent-attenuation characteristics.

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International Search Report corresponding to application No. PCT/JP03/01365 dated Apr. 1, 2003.
English translation of PCT/ISA/210, dated Apr. 1, 2003.

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