SURFACE ACOUSTIC WAVE DEVICE, COMMUNICATION FILTER AND MOBILE COMMUNICATION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a surface acoustic wave (SAW) device capable of forming fine electrodes, with a relatively thin film thickness, from low-priced materials. Ž

SOLUTION: In a SAW device with interdigital electrodes 5-7 formed on a piezoelectric substrate, a main component of electrode materials forming the interdigital electrodes 5-7 is copper, the piezoelectric substrate is an approximate 15° rotary Y-axis cut X-direction propagation LiNbO3substrate, and a SAW propagation mode is a Love-wave mode. Ž

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