Patent ID: 7397165
Filing Date: 2008-07-08
Classification: H01L,H03H

Abstract:
1. A restrained surface wave resonator device with abated acceleration sensitivity, comprising: a plurality of metallization layers are stacked on a first major surface of a substrate; a first adhesive layer fastens said substrate to a stiffening layer; said stiffening layer is attached to a circuit board by a second adhesive, said stiffening layer being composed of a material substantially more rigid than said substrate and said circuit board; said substrate having a second major surface with a plurality of horizontal subsurface slotted indentations, said plurality of slotted indentations removing a portion of substrate material from said second surface; each of said plurality of slotted indentations being separated by a plurality of structural support members; said resonator, having a plurality of performance characteristics, when placed in motion, is subjected to a plurality of degrading acceleration sensitivity effects; said plurality of degrading acceleration effects further comprising a normal acceleration, an in-plane acceleration and a plurality of flexural deformations; said first adhesive layer and said second adhesive layer cooperate with said stiffening layer to isolate said substrate from said plurality of degrading acceleration sensitivity effects; and said plurality of slotted indentations provide an improved structural rigidity to abate said plurality of degrading acceleration sensitivity effects and maintain said plurality of resonator performance characteristics.