Surface acoustic wave device and electronic component comprising it

In a surface acoustic wave device, a common portion and a strip portion of a reflector electrode are partially cut off to increase a space between the electrodes. The increase of the space between the electrodes reduces the influence of the amount of charges and the influence of an unbalance between...

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Bibliographic Details
Main Authors Furukawa, Mitsuhiro, Yamashita, Kiyoharu, Nishida, Kazushi, Kurotake, Hiroshi
Format Patent
LanguageEnglish
Published 11.03.2004
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Summary:In a surface acoustic wave device, a common portion and a strip portion of a reflector electrode are partially cut off to increase a space between the electrodes. The increase of the space between the electrodes reduces the influence of the amount of charges and the influence of an unbalance between the amounts of charges in etching of a metallic film, thereby preventing the electrodes from having a curved shape in section. Consequently, the surface acoustic wave device has a reduced propagation loss.