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:
Jul. 12, 2005
Filed:
Oct. 02, 2002
Masayoshi Aikawa, Yokohama-shi, Kanagawa, JP;
Eisuke Nishiyama, Saga, JP;
Kozo Egashira, Saga, JP;
Fumio Asamura, Saitama, JP;
Takeo Oita, Saitama, JP;
Masayoshi Aikawa, Yokohama-shi, Kanagawa, JP;
Eisuke Nishiyama, Saga, JP;
Kozo Egashira, Saga, JP;
Fumio Asamura, Saitama, JP;
Takeo Oita, Saitama, JP;
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Other;
Abstract
A multielement planar antenna has a substrate, a plurality of antenna element pairs disposed on a first main surface of said substrate, each of the antenna element pairs including first and second antenna elements each made of a circuit conductor, a metal conductor disposed on a second main surface of the substrate, and a slot line defined in the metal conductor. Each of the antenna element pairs has a microstrip line interconnecting the first and second antenna elements. The slot line crosses the microstrip lines and is electromagnetically coupled to the microstrip lines for feeding the first and second antenna elements. The slot line is fed at its central area by a microstrip line or a coplanar line.