| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface acoustic wave filter that has a high blocking attenuation in high frequencies range of its pass band. SOLUTION: In the surface acoustic wave device S, a surface acoustic wave element 1 formed by placing exciting electrode (4, 5) configuring at least one resonator, input and output signal use signal electrodes 9, 10 connected to the exciting electrodes 4, 5 and ground electrodes 6, 7, 8 formed to clamp the signal electrodes 9, 10 from both sides and connected to the exciting electrodes onto a piezoelectric substrate A, is contained in a package 2, and the signal electrodes of the surface acoustic wave element 1 are connected to the input output signal use signal terminals formed in the package 2, and the ground electrodes of the surface acoustic wave element 1 are connected to a ground terminal formed to clamp the signal terminals of the package 2 from both sides respectively via a conductor.
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