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:
Dec. 09, 2008
Filed:
Jan. 30, 2007
Hisamatsu Nakano, Tokyo, JP;
Hidekazu Umetsu, Tokyo, JP;
Yoichi Asano, Tokyo, JP;
Junji Yamauchi, Tokyo, JP;
Akira Miyoshi, Tokyo, JP;
Hisamatsu Nakano, Tokyo, JP;
Hidekazu Umetsu, Tokyo, JP;
Yoichi Asano, Tokyo, JP;
Junji Yamauchi, Tokyo, JP;
Akira Miyoshi, Tokyo, JP;
Mitsumi Electric Co., Ltd., Tokyo, JP;
Abstract
An antenna unit consists of an EBG reflector, a single curl antenna supported at a central portion of the EBG reflector, and a periodic structure upper plate disposed apart from a principal surface of the EBG reflector by a predetermined distance. The EBG reflector includes a substrate having the principal surface and (Nx×Ny) square patches which are printed on the principle surface of the substrate and which are arranged in a matrix fashion (lattice structure). The periodic structure upper plate consists of a film and (Nx×Ny) square patch-like conductors printed on the film. The (Nx×Ny) square patch-like conductors are disposed so as to oppose to the (Nx×Ny) square patches, respectively.