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US 11,990,892 B2Granted
Acoustic wave device with transverse spurious mode suppression
AssigneeSkyworks Solutions, Inc.
InventorsYuhao Liu, Jiansong Liu, Chun Sing Lam
Life of this patent
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Abstract
An acoustic wave device with a bent section is disclosed. The acoustic wave device includes a piezoelectric layer and an interdigital transducer electrode on the piezoelectric layer. The bent section is arranged to create a curvature in a waveguide of the acoustic wave device to suppress a transverse spurious mode of the acoustic wave device.
Claims21
An acoustic wave device comprising:
- a piezoelectric layer;
- and
- an interdigital transducer electrode on the piezoelectric layer, the interdigital transducer electrode including a bent section arranged to create a curvature in an acoustic aperture of the acoustic wave device to suppress a transverse mode of the acoustic wave device, and the acoustic aperture having substantially the same width throughout the bent section.
An acoustic wave device comprising:
- a piezoelectric layer;
- an interdigital transducer electrode on the piezoelectric layer, the interdigital transducer electrode including a bus bar and fingers extending from the bus bar, the interdigital transducer electrode including a bent section creating a curvature in an acoustic aperture of the acoustic wave device to suppress a transverse mode of the acoustic wave device, and the acoustic aperture having substantially the same width throughout the bent section;
- and
- a piston mode structure.
1 more element
A wireless communication device comprising:
- an acoustic wave filter including an acoustic wave resonator, the acoustic wave resonator including a piezoelectric layer, an interdigital transducer electrode on the piezoelectric layer, and a piston mode structure, the interdigital transducer electrode including a bent section creating a curvature in an acoustic aperture of the acoustic wave resonator to suppress a transverse m ode of the acoustic wave resonator, and the acoustic aperture having substantially the same width throughout the bent section;
- and
- an antenna in communication with the acoustic wave filter.
Dependencies are inferred from the claim text.