Patent ID: 11967942
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. An acoustic resonator, comprising:
a substrate having a base layer and an intermediate dielectric layer with a plurality of cavities extending therein;
at least one piezoelectric plate attached to a surface of a substrate except for portions of the at least one piezoelectric plate that span the plurality of cavities, respectively, to form a plurality of diaphragms; and
a conductor pattern on a surface of the at least one piezoelectric plate and that includes interdigital transducers (IDTs) of at least one pair of sub-resonators, with the IDT of each sub-resonator comprising interleaved fingers on a respective diaphragm of the plurality of diaphragms,
wherein the respective sub-resonators of the at least one pair of sub-resonators are positioned symmetrically about a central axis of the at least one single-crystal piezoelectric plate and, and have an electrical and physical configuration that is the same as each other.