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Surface acoustic wave device using an elastic substrate and an aluminum nitride piezoelectric film
Surface acoustic wave device using an elastic substrate and an aluminum nitride piezoelectric film
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机译:使用弹性基板和氮化铝压电膜的声表面波装置
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摘要
A surface acoustic wave device comprises an elastic substrate having a major surface with a given crystal orientation and having a positive temperature coefficient of delay (TCD), and AlN film deposited on the elastic substrate so that piezoelectric axis of the AlN film has a predetermined direction with respect to the major surface of the elastic substrate having a negative TCD, and electrodes provided on the AlN film or between the elastic substrate and the AlN film.
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