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. 05, 2005
Filed:
May. 15, 2003
Minefumi Ouchi, Ishikawa-ken, JP;
Minefumi Ouchi, Ishikawa-ken, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A surface acoustic wave device includes a plurality of interdigital electrode portions provided so as to have a balanced-unbalanced conversion function. A ratio N2/N1 is the range of about 50% to about 70%, where N1 represents the total number of electrode fingers of an interdigital electrode portion connected on a balanced signal terminal side, and N2 represents the total number of electrode fingers of the interdigital electrode portion connected on the unbalanced signal side, and the meshing width (W) of the interdigital electrode portions is in the range of about 43 λ to about 58 λ in which λ is the wavelength of a surface acoustic wave.