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US 10,615,772 B2Granted
Acoustic wave resonators having Fresnel surfaces
AssigneeTexas Instruments Incorporated
InventorTing-Ta Yen
Life of this patent
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Abstract
Acoustic wave resonators having Fresnel features are disclosed. An example integrated circuit package includes an acoustic wave resonator, the acoustic wave resonator including a Fresnel surface. In some examples, the Fresnel surface includes a plurality of recessed features and/or protruding features at different locations on the Fresnel surface, each of the plurality of features to confine main mode acoustic energy from a respective portion of the Fresnel surface in a central portion of the acoustic wave resonator.
Claims9
An integrated circuit package, comprising:
- an acoustic wave resonator including:
- a piezoelectric material having an edge, the edge including a Fresnel surface;
- a first electrode having a first one or more fingers on the piezoelectric material;
- and a second electrode having a second one or more fingers on the piezoelectric material, the second one or more fingers interlaced with the first one or more fingers.
1 more element
An acoustic wave resonator, comprising:
- a piezoelectric material having a central portion and first and second edges, the first and second edges having protruding features that confine main mode acoustic energy from different portions of the piezoelectric material in the central portion;
- a first electrode having a first one or more fingers on the piezoelectric material;
- and
- a second electrode having a second one or more fingers on the piezoelectric material, the second one or more fingers interlaced with the first one or more fingers.
1 more element
Dependencies are inferred from the claim text.