| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a surface acoustic filter having excellent power resistance. <P>SOLUTION: Out of a plurality of surface acoustic wave resonators configuring series arm resonators S1-S4 and parallel arm resonators P1-P3, an IDT electrode configuring any one of the surface acoustic wave resonators other than a surface acoustic wave resonator having the lowest heating value per unit time when a signal flows between first and second signal terminals 21, 24 does not face the wiring electrodes 50a, 50b. <P>COPYRIGHT: (C)2012,JPO&INPIT |
