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:
Jan. 18, 2011
Filed:
Apr. 21, 2008
Tokihiro Nishihara, Kawasaki, JP;
Masafumi Iwaki, Kawasaki, JP;
Shinji Taniguchi, Kawasaki, JP;
Masanori Ueda, Kawasaki, JP;
Go Endo, Yokohama, JP;
Koichi Hatano, Yokohama, JP;
Tokihiro Nishihara, Kawasaki, JP;
Masafumi Iwaki, Kawasaki, JP;
Shinji Taniguchi, Kawasaki, JP;
Masanori Ueda, Kawasaki, JP;
Go Endo, Yokohama, JP;
Koichi Hatano, Yokohama, JP;
Taiyo Yuden Co., Ltd, Tokyo, JP;
Abstract
An antenna duplexer is provided, which can be built with a smaller size and lower height than ever without compromising out-of-band attenuation characteristic and isolation characteristic between a transmit terminal and a receive terminal. The antenna duplexer includes a transmit filter provided between an antenna terminal and the transmit terminal, and a receive filter provided between the antenna terminal and the receive terminal. The filters are enclosed by a package, in which a ground pattern for the receive filter is separated from other ground patterns.