Skyworks Solutions, Inc.
CASCADED RESONATOR WITH DIFFERENT REFLECTOR PITCH

Abstract:

An acoustic wave device comprises a piezoelectric substrate, interdigital transducer electrodes having an electrode pitch .lamda..sub.0, and first and second reflector gratings disposed on opposite respective sides of the interdigital transducer electrodes in a propagation direction of a main acoustic wave through the acoustic wave device, the first reflector grating having a different electrode pitch .lamda..sub.1 than an electrode pitch .lamda..sub.2 of the second reflector grating to suppress ripples in a conductance curve of the acoustic wave device.