Hybrid resonant structure

Details Hybrid resonant structure Hybrid resonant structure

2006-07-28

2009-10-27

Barnie, Rexford N (Department: 2819)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C310S320000, C333S191000

Reexamination Certificate

active

07609132

ABSTRACT:
A bulk wave acoustic resonant structure which is in accordance with the invention allows the difficulties encountered at high frequency, the impossibility of working at low frequency on simple structures and the absence of an adequate coupling level to be overcome. The invention therefore proposes the use of an additional layer of material which covers the upper electrode of a piezoelectric transducer in order to localize the position of maximum intensity of the dynamic stress close to the centre of the piezoelectric layer through the effect of propagation.The structure that is in accordance with the invention may be associated with Bragg mirrors and various uses are presented.

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