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:
Apr. 16, 2013
Filed:
Oct. 03, 2011
Daisuke Yamamoto, Nagaokakyo, JP;
Nobuhira Tanaka, Nagaokakyo, JP;
Daisuke Yamamoto, Nagaokakyo, JP;
Nobuhira Tanaka, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
In a boundary acoustic wave resonator, apodization weighting is performed on an IDT electrode so that an intersecting width decreases as a location moves outward in a boundary acoustic wave propagation direction. An inner side of a first busbar includes inclined portions that are disposed a predetermined distance from an envelope portion Bon the side of the first busbar. An inner side of a second busbar includes inclined portions that are disposed a predetermined distance from an envelope portion on the side of second busbar. The sum of the numbers of electrode fingers and dummy electrodes that a straight line extending from the end of at least one of electrode fingers in the boundary acoustic wave propagation direction crosses before reaching the side of the first busbar or the side of the second busbar is equal to or greater than 5.