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. 09, 2007
Filed:
Sep. 07, 2004
Kei Satoh, Yokosuka, JP;
Shoichi Narahashi, Yokohama, JP;
Daisuke Koizumi, Zushi, JP;
Yasushi Yamao, Yokosuka, JP;
Kei Satoh, Yokosuka, JP;
Shoichi Narahashi, Yokohama, JP;
Daisuke Koizumi, Zushi, JP;
Yasushi Yamao, Yokosuka, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A center conductor having a length L, which is equivalent in electrical length to one quarter wavelength, and ground conductors disposed on the opposite sides of the center conductor with a gap portion therebetween in coplanar manner are formed on a dielectric substrate. The center conductor and the ground conductors located on the opposite sides thereof, and are connected together by shorting ends. This results in the formation of corner areas, respectively, whereby obtaining a coplanar waveguide resonator. An edge line of the shorting end is recessed to have a curve configuration so that each corner area has an angle greater than 90 degrees, which reduces power current concentration at the corner points in the respective corner areas.