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:
Mar. 29, 2005
Filed:
Jun. 14, 2002
Hiroyuki Aoyama, Saitama-ken, JP;
Keiko Kikuchi, Saitama-ken, JP;
Yasunori Takaki, Saitama-ken, JP;
Hidetoshi Hagiwara, Tottori-ken, JP;
Hiroyuki Aoyama, Saitama-ken, JP;
Keiko Kikuchi, Saitama-ken, JP;
Yasunori Takaki, Saitama-ken, JP;
Hidetoshi Hagiwara, Tottori-ken, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A surface-mounted antenna comprising a substrate made of a high-dielectric constant material having a dielectric constant ∈of 6 or more, a ribbon-shaped radiation electrode having one end which is grounded and the other end which is open, a grounding electrode connected or capacitance-coupled to one end of the radiation electrode, and a current-feeding electrode in a portal shape formed on a side surface separate from the radiation electrode with a gap; the current-feeding electrode having a current-feeding portion at one end, a grounding portion at the other end, and a portion substantially in alignment with the radiation electrode between them; and the length of the aligning portion, a gap width or a portal shape being able to be properly set such that capacitance owned by the current-feeding electrode and inductance can be adjusted for easily achieving impedance matching.