Elastic wave device
In an elastic wave device, an electrode, which is formed in a comb-like shape and is made of conductive material having a prescribed thickness, is arranged on a substrate of a piezo-electric element containing lithium niobate as a main component. Also, in this elastic wave device, a surface of the substrate is set to a plane which is obtained by rotating a plane perpendicular to a crystal Y-axis of the lithium niobate by an angle ranging from 55 degrees to 57 degrees around a crystal x-axis of the lithium niobate, and a duty ratio (a width w of an electrode finger/an arrangement interval p of a pair of electrode fingers) of each of a plurality of electrode fingers composing the electrode is equal to or higher than 0.4 and is lower than 1.0.
Mitsubishi Denki Kabushiki Kaisha
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Koichiro Kenya Kenji Kouji Masatsune Tatsuya Tsutomu Shusou
Misu Hashimoto Yoshida Murai Yamaguchi Ohmori Nagatsuka Wadaka