The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 2021
Filed:
Jan. 31, 2020
Resonant Inc., Goleta, CA (US);
Ventsislav Yantchev, Sofia, BG;
Bryant Garcia, Burlingame, CA (US);
Viktor Plesski, Gorgier, CH;
Soumya Yandrapalli, Lausanne, CH;
Robert B. Hammond, Santa Barbara, CA (US);
Patrick Turner, San Bruno, CA (US);
Jesson John, Dublin, CA (US);
Resonant Inc., Austin, TX (US);
Abstract
Resonator devices, filter devices, and methods of fabrication are disclosed. A resonator device includes a substrate and a single-crystal piezoelectric plate having parallel front and back surfaces. An acoustic Bragg reflector is sandwiched between a surface of the substrate and the back surface of the single-crystal piezoelectric plate. An interdigital transducer (IDT) is formed on the front surface. The IDT and the single-crystal piezoelectric plate are configured such that a radio frequency signal applied to the IDT excites a shear primary acoustic mode within the single-crystal piezoelectric plate. The acoustic Bragg reflector is configured to reflect the primary shear acoustic mode over a frequency range including a resonance frequency and an anti-resonance frequency of the acoustic resonator device.