Patent ID: 11962283
Assignee: SKYWORKS SOLUTIONS, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. An acoustic wave filter with a piston mode Lamb wave resonator, the acoustic wave filter comprising:
an input node configured to receive a radio frequency signal;
an output node; and
a piston mode Lamb wave resonator coupled between the input node and the output node, the piston mode Lamb wave resonator including a piezoelectric layer, an interdigital transducer electrode on the piezoelectric layer, and an air cavity on an opposite side of the piezoelectric layer than the interdigital transducer electrode, the piston mode Lamb wave resonator being configured to generate a Lamb wave in the piezoelectric layer, the piston mode Lamb wave resonator having an active region and a border region, the border region having a fist velocity with a lower magnitude than a second velocity of the active region, and the acoustic wave filter being configured to filter the radio frequency signal.