Patent ID: 11881608
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A filter device comprising:
a substrate made of a piezoelectric material; and
a plurality of surface acoustic wave resonators disposed on the substrate and connected with each other; wherein
at least one of the plurality of surface acoustic wave resonators includes a plurality of divided resonators connected in parallel with each other;
each of the plurality of divided resonators includes an interdigital transducer, and among the plurality of divided resonators, a pitch of the interdigital transducer of a divided resonator is different from a pitch of the interdigital transducer of another divided resonator;
among the plurality of divided resonators, an arrangement direction of electrode fingers of the interdigital transducer of a divided resonator is parallel or substantially parallel with an arrangement direction of electrode fingers of the interdigital transducer of another divided resonator; and
the interdigital transducers of the plurality of divided resonators are displaced from each other in a direction that is parallel or substantially parallel to the arrangement direction of the electrode fingers and in a direction perpendicular or substantially perpendicular to the arrangement direction of the electrode fingers.