| 摘要 |
<p>Provided is an elastic wave filter device that exhibits an excellent attenuation characteristics except within the passband. The elastic wave filter device (1) is equipped with filter electrode sections (21a-24a) that are provided on a piezoelectric substrate (20) and constitute elastic wave filter sections (21-24). Input signal lines (41, 43) have adjoining sections (41a, 43a) that adjoin output signal lines (51a, 52b). The distance between each adjoining section (41a, 43a) and a corresponding ground line (61, 62) that is connected to the ground potential is shorter than the distance between the adjoining section (41a, 43a) and the corresponding output signal line (51a, 52b).</p> |
