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. 31, 2024
Filed:
May. 25, 2021
Murata Manufacturing Co., Ltd., Kyoto, JP;
Kuan Zhang, Goleta, CA (US);
James R. Costa, Lompoc, CA (US);
Andrew Kay, Provo, UT (US);
Greg Dyer, Santa Barbara, CA (US);
Viktor Plesski, Gorgier, CH;
Soumya Yandrapalli, Lausanne, CH;
Robert B. Hammond, Santa Barbara, CA (US);
Bryant Garcia, Belmont, CA (US);
Patrick Turner, San Bruno, CA (US);
Jesson John, Dublin, CA (US);
Ventsislav Yantchev, Sofia, BG;
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Abstract
Acoustic filters, resonators and methods are disclosed. An acoustic filter device includes a substrate having a surface and a single-crystal piezoelectric plate having front and back surfaces, the back surface attached to the surface of the substrate except for a portion of the piezoelectric plate forming a diaphragm that spans a cavity in the substrate. An interdigital transducer is formed on the front surface of the piezoelectric plate with interleaved fingers of the IDT disposed on the diaphragm. At least a portion of a perimeter of the cavity is curved and at least one end zone of the perimeter of the cavity is round.