| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface acoustic wave device with high resistance to power and high reliability. SOLUTION: In the surface acoustic wave device that forms a ladder circuit consisting of connection of a plurality of resonators each having IDT electrodes I on a piezoelectric substrate, the ladder circuit is characterized in that one resonator or more is connected is series between a resonator passing an input signal first and a resonator connected in parallel with and at the poststage of the resonator passing the input signal first so as to form a resonator group 11 consisting of series connection of a plurality of the resonators.
|
