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US 2006/0038637 A1Published application
Saw filter and method of manufacturing the same
AssigneeAlps Electric Co., Ltd.
InventorsTakuo Kudo, Satoshi Waga
Life of this patent
Estimating the term…
Abstract
In an SAW filter on one side of a piezoelectric substrate are formed a pattern portion constituted by a conductor and provided on the outer circumferential portion of the surface acoustic wave device, and a conductor removing portion formed between the surface acoustic wave device and the pattern portion. The shape of the surface acoustic wave device is formed by the conductor removing portion and the surface acoustic wave device remains non-conductive with the pattern by the conductor removing portion.
Claims15
A SAW filter comprising:
- a piezoelectric substrate, and
- a plurality of surface acoustic wave devices formed on one side of the piezoelectric substrate, each including a pair of opposite interdigitated electrodes formed by conductors and connecting electrodes formed by conductors and connected respectively to the interdigitated electrodes,
- wherein pattern portions formed by conductors provided on circumferences of the plurality of surface acoustic wave devices and conductor removing portions provided between the surface acoustic wave devices and the pattern portions are formed on the one side of the piezoelectric substrate, and
- wherein the shape of the surface acoustic wave devices is formed by the conductor removing portions, and the surface acoustic wave devices remain non-conductive with the pattern portions by the conductor removing portions.
1 more element
Dependencies are inferred from the claim text.