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:
Dec. 29, 2020
Filed:
Jul. 28, 2016
Senseor, Valbonne-Sophia-Antipolis, FR;
Sylvain Ballandras, Besançon, FR;
Sébastien Alzuaga, Tarcenay, FR;
SENSEOR, Sophia-Antipolis, FR;
Abstract
A surface elastic wave resonator comprises a piezoelectric material to propagate the surface elastic waves and a transducer inserted between a pair of reflectors comprising combs of interdigitated electrodes and having a number Nc of electrodes connected to a hot spot and an acoustic aperture W wherein the relative permittivity of the piezoelectric material is greater than about 15, a product of Nc·W/fa for the transducer being greater than 100 μm·MHz, where fa is the antiresonance frequency of the resonator. A circuit comprises a load impedance and a resonator according to the invention and having an electrical response manifesting as a peak in the coefficient of reflection Sat a frequency of a minimum value of the parameter Sthat is lower than −10 dB, the antiresonance peak of the resonator being matched to the impedance of the load.