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. 17, 2007
Filed:
Feb. 01, 2005
Kei Satoh, Yokosuka, JP;
Shoichi Narahashi, Yokohama, JP;
Tetsuo Hirota, Kanazawa, JP;
Yasushi Yamao, Yokosuka, JP;
Kei Satoh, Yokosuka, JP;
Shoichi Narahashi, Yokohama, JP;
Tetsuo Hirota, Kanazawa, JP;
Yasushi Yamao, Yokosuka, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A plurality of one-quarter wavelength coplanar resonatorstoare formed in series on a dielectric substrate, and coplanar input/output terminal sectionsandare formed on the dielectric substrate at opposite ends of the series connection for coupling with resonatorsand, respectively. A center conductor line width wof each of the resonatorstois equal to a center conductor line width wof each of the input/output terminal sectionand, but a ground conductor spacing dof each of the resonatorstois greater than a ground conductor spacing dof each of input/output terminal sectionandMaintaining the accuracy of design is facilitated and a reduction in the maximum current density in the resonator is enabled.