Surface acoustic wave device

摘要

A surface acoustic wave device includes at least one interdigital transducer which is disposed on a piezoelectric substrate so as to extend along the surface acoustic wave propagation direction. An input signal terminal and an output signal terminal are also provided on the piezoelectric substrate. The output signal terminal has first and second balanced signal terminals. A capacitance component disposed on the piezoelectric substrate is added to one of the first and second balanced signal terminals. Thus, a surface acoustic wave device having improved balance between the pair of balanced signal terminals is provided.