Surface acoustic wave device
AssigneeSanyo Electric Co., Ltd.
InventorsNaoki Tanaka, Morio Ogura
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Abstract
An SAW device includes a glass substrate, an LiNbO3 (LN) substrate, and an electrode. When a pitch of the electrode is λ, a thickness of the LN substrate is H, and K equals to 2π/λ, a product of K and H is at least 0.5 and at most 1.0. Accordingly, an SAW device is obtained which is provided with high K2 and an enhanced temperature characteristic and which can be advantageously reduced in size.
Claims5
A surface acoustic wave device, comprising a glass substrate, a piezoelectric substrate including LiNbO3 formed on said glass substrate, and an electrode formed on said piezoelectric substrate, characterized in that a product of K and H is at least 0.5 and at most 1.0, where a pitch of said electrode is λ, a thickness of said piezoelectric substrate is H, and K equals to 2π/λ.
Dependencies are inferred from the claim text.