Patent ID: 11881837
Assignee: SKYWORKS SOLUTIONS, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A wireless communication device comprising:
a filter including a surface acoustic wave device having a piezoelectric layer and a vertical stack over the piezoelectric layer, the vertical stack including a first acoustic reflector on the piezoelectric layer, a second acoustic reflector on the piezoelectric layer, and an interdigital transducer electrode on the piezoelectric layer and positioned between the first acoustic reflector and the second acoustic reflector, the interdigital transducer electrode having a first side closer to the first acoustic reflector and a second side closer to the second acoustic reflector, and a vertical arrangement of the vertical stack configured such that an acoustic wave propagation velocity of a first region between the first side and a first reflector is faster than an acoustic wave propagation velocity of a second region between the first side and the second side;
an antenna operatively coupled to the filter;
a radio frequency amplifier operatively coupled to the acoustic wave filter and configured to amplify a radio frequency signal; and
a transceiver in communication with the radio frequency amplifier.