Piezoelectric filter

Details Piezoelectric filter Piezoelectric filter

2008-05-27

2008-05-27

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S193000, C333S133000

Reexamination Certificate

active

11655129

ABSTRACT:
A piezoelectric filter that includes a first substrate having at least one first piezoelectric resonator disposed on a main surface thereof; a second substrate having at least one second piezoelectric resonator disposed on a main surface thereof. A connection pattern extends around the first piezoelectric resonator and the second piezoelectric resonator and is disposed between the first substrate and the second substrate such that the main surface of the first substrate faces the main surface of the second substrate, and the first piezoelectric resonator is remote from the second piezoelectric resonator. A connecting layer bonds a pad disposed on the main surface of the first substrate to a pad disposed on the main surface of the second substrate, and is electrically connected to the first piezoelectric resonator and the second piezoelectric resonator.

REFERENCES:
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patent: 2002/0109564 (2002-08-01), Tsai et al.
patent: 2004/0140475 (2004-07-01), Sun et al.
patent: 2005/0001698 (2005-01-01), Bouche et al.
patent: 2006/0001123 (2006-01-01), Heck et al.
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International Search Report from corresponding International application dated Oct. 25, 2005.
Written Opinion (w/English translation) from corresponding International application dated Oct. 25, 2005.

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