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US 2006/0138902 A1Published application
Acoustic boundary wave device
AssigneeMurata Manufacturing Co., Ltd.
InventorHajime Kando
Life of this patent
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Abstract
A boundary acoustic wave device using SH boundary acoustic waves includes a first medium layer, a second medium layer stacked on the first medium layer, and an electrode including an interdigital electrode and reflectors. A sound absorbing layer is provided on the surface of the first medium layer and/or the second medium layer opposite the interface therebetween.
Claims30
1-29. (canceled)
A boundary acoustic wave device comprising:
- a first medium layer;
- a second medium layer stacked on the first medium layer;
- an electrode disposed in an interface between the first medium layer and the second medium layer, wherein boundary acoustic waves propagate along the interface between the first and second medium layers;
- and
- a sound absorbing layer disposed on at least one of external surfaces of at least one of the first and second medium layers opposite to the interface so as to attenuate spurious responses.
2 more elements
A method for manufacturing a boundary acoustic wave device, comprising the steps of:
- forming an electrode on a first medium layer;
- forming a second medium layer so as to cover the electrode on the first medium layer;
- and
- forming a sound absorbing layer on at least one of external surfaces of at least one of the first medium layer and the second medium layer opposite the interface therebetween.
1 more element
Dependencies are inferred from the claim text.