| 摘要 |
A surface acoustic wave element 1 comprises a piezoelectric substrate 19 , IDT electrodes 3, 4, 5 of an odd number not less than three formed along a propagation direction of surface acoustic waves that propagates on the piezoelectric substrate, wherein IDT electrodes 3, 5 of the odd number of IDT electrodes 3, 4, 5 disposed on both sides of an IDT electrode 4 that is located at the center are connected to first and second reference potential terminals 14, 15 , respectively, and the first and second reference potential terminals 14 and 15 are formed asymmetrically with respect to a virtual central axis A that passes through the center of the IDT electrode 4 located at the center and provided in a direction perpendicular to the propagation direction.
|
