Surface acoustic wave device

摘要

To obtain a surface acoustic wave device which can be produced with ease at a low cost and can be reduced in size without causing deterioration of characteristics, a surface acoustic wave device having input and output transducers arranged alternately on the surface of a substrate for propagating a surface acoustic wave includes metal patterns provided outside the transducers along the extension line of the propagation path of the surface acoustic wave and having at least one surface inclined at an angle theta (5 DEG < theta <85 DEG or -85 DEG < theta <-5 DEG ) with respect to the propagation direction of the surface acoustic wave.