| 摘要 |
PROBLEM TO BE SOLVED: To obtain an elastic wave apparatus which has first and second elastic boundary wave devices different in frequency characteristics formed on one piezoelectric substrate and can suppress spurious in both of the first and second elastic wave devices. SOLUTION: In the elastic wave apparatus, an upper surface 2a of a piezoelectric substrate 2 has a slope 2b and a flat portion 2c other than the slope 2b, and a first electrode 3 is formed on the flat portion 2c while a second electrode 4 is formed on the slope 2b, and first and second elastic wave devices 5 and 6 having first and second electrodes 3 and 4, respectively, are constituted. COPYRIGHT: (C)2010,JPO&INPIT
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