Surface acoustic wave apparatus and communications device

Details Surface acoustic wave apparatus and communications device Surface acoustic wave apparatus and communications device

2007-11-27

2007-11-27

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C333S193000

Reexamination Certificate

active

10810728

ABSTRACT:
In a surface acoustic wave element10, in which IDT electrodes31and32, a grounding electrode37, etc. are formed one main surface of a piezoelectric substrate20, resistors40made of a semiconductor are provided to connection electrodes38that interconnect the respective electrodes. By forcing the charges generated in the IDT electrodes to move via the resistors40, it is possible to provide a compact, highly reliable surface acoustic wave apparatus capable of preventing an electrostatic discharge damage in the IDT electrodes.

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