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

Claim 0:
1. 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 single-crystal piezoelectric plate that has a central axis and that is attached to a surface of a substrate except for portions of the at least one piezoelectric plate that form a plurality of diaphragms that each span a respective cavity of the plurality of cavities; and
a conductor pattern on a surface of the at least one single-crystal piezoelectric plate, the conductor pattern comprising interdigital transducers (IDTs) of one or more pairs of sub-resonators,
wherein the IDT of each sub-resonator comprises interleaved fingers on a respective diaphragm of the plurality of diaphragms,
wherein the respective sub-resonators of each pair of sub-resonators are positioned symmetrically about the central axis of the at least one single-crystal piezoelectric plate, and
wherein each sub-resonator of each pair of sub-resonators has an electrical and physical configuration that is the same as each other.