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:
Mar. 18, 2025
Filed:
Dec. 27, 2021
Murata Manufacturing Co., Ltd, Kyoto, JP;
Ventsislav Yantchev, Sofia, BG;
MURATA MANUFACTURING CO., LTD., Nagaokakyo, JP;
Abstract
Filters and methods of making filters are disclosed. A filter device includes a substrate, a piezoelectric plate, and an acoustic Bragg reflector between a surface of the substrate and a back surface of the piezoelectric plate. A conductor pattern on a front surface of the piezoelectric plate includes interdigital transducers (IDTs) of a plurality of resonators and a plurality of conductors to connect the plurality of resonators in a ladder filter circuit, the plurality of conductors including adjacent first and second conductors. A portion of the piezoelectric plate between the first and second conductors is removed.