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US 12,592,678 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.
Claims19
An acoustic wave device having an acoustic aperture, the 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 the acoustic aperture, the interdigital transducer electrode including a first bus bar and a second bus bar having substantially the same shape and orientation as each other in the bent section, and the first bus bar being curved in the bent section.
A radio frequency module comprising:
- a filter configured to filter a radio frequency signal, the filter including an acoustic wave resonator having an acoustic aperture, the acoustic wave resonator including 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 the acoustic aperture, the interdigital transducer electrode including a first bus bar and a second bus bar having substantially the same shape and orientation as each other in the bent section, and the first bus bar being curved in the bent section;
- and
- a radio frequency switch coupled to the filter.
Dependencies are inferred from the claim text.