Patent ID: 11909377
Assignee: SKYWORKS SOLUTIONS, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A multi-mode surface acoustic wave filter comprising:
a first interdigital transducer electrode on a piezoelectric layer;
an acoustic reflector on the piezoelectric layer;
a second interdigital transducer electrode on the piezoelectric layer, the second interdigital transducer electrode longitudinally coupled to the first interdigital transducer electrode and positioned between the first interdigital transducer electrode and the acoustic reflector; and
an acoustic velocity adjustment structure positioned over at least a gap between the first interdigital transducer electrode and the second interdigital transducer electrode, the acoustic velocity adjustment structure arranged to increase an acoustic wave propagation velocity in a first region that includes the gap relative to a second region over at least a portion of the first interdigital transducer electrode.