Filter module using piezoelectric resonators, duplexer,...

Details Filter module using piezoelectric resonators, duplexer,... Filter module using piezoelectric resonators, duplexer,...

2005-09-09

2009-06-30

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S189000

Reexamination Certificate

active

07554422

ABSTRACT:
A filter module includes a substrate and a plurality of resonators formed on the substrate and utilizing longitudinal vibration along the thickness of a piezoelectric layer. A plurality of external connection terminals are formed above or below the piezoelectric layer so as to be electrically connected to external circuits and also electrically connected to some of the plurality of resonators through a plurality of interconnects formed to the side of the piezoelectric layer to which the external connection terminals are formed.

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patent: WO 03073611 (2003-09-01), None

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