Patent ID: 11949399
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An acoustic resonator device comprising:
a substrate having a surface;
a piezoelectric layer;
an interdigital transducer (IDT) at a surface of the piezoelectric layer, and
an acoustic Bragg reflector sandwiched between the surface of the substrate and the surface of the piezoelectric layer, the acoustic Bragg reflector configured to reflect a resonance frequency of the acoustic resonator device,
wherein the acoustic Bragg reflector comprises alternating diamond and SiO2 layers, and
wherein an electric field of the resonance frequency is predominantly lateral while a direction of acoustic energy flow of a primary shear acoustic mode of the acoustic resonator device is substantially orthogonal to the electric field.