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:
Jun. 29, 2010
Filed:
Apr. 23, 2009
Minefumi Ouchi, Nomi, JP;
Minefumi Ouchi, Nomi, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
An acoustic wave device includes first and second 3-IDT acoustic wave filters provided on a piezoelectric substrate. A second IDT in the first acoustic wave filter is electrically connected to a second IDT in the second acoustic wave filter and a third IDT in the first acoustic wave filter is electrically connected to a third IDT in the second acoustic wave filter to cascade the first acoustic wave filter with the second acoustic wave filter. An acoustic wave resonator is connected to a first IDT in the first acoustic wave filter. In the acoustic wave device, NA/NB is in a range from about 2.6 to about 3.5 and fB/fa is in a range from about 0.995 to about 1.010.