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. 14, 2015
Filed:
Dec. 08, 2011
Toshio Nishizawa, Tokyo, JP;
Toshio Nishizawa, Tokyo, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
A duplexer includes a package substrate having layers stacked, a transmission filter and a reception filter that are provided on an upper surface of a first layer that is one of the layers of the package substrate, the transmission and reception filters being acoustic wave filters, a metal pattern provided on the upper surface of the first layer and formed to surround the transmission and reception filters, a transmission line provided on an upper surface of a second layer that is one of the layers of the package substrate and is positionally lower than the first layer, the transmission line electrically connecting the transmission filter and a transmission terminal together, and a reception line that is provided on the upper surface of the second layer and electrically connects the reception filter and a reception terminal. The thickness of the first layer is greater than that of the second layer.