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:
Jun. 10, 2003
Hirotaka Ishihara, Ibaraki, JP;
Koichi Ogawa, Hirakata, JP;
Susumu Inatsugu, Hirakata, JP;
Tomoyuki Maeda, Kawanishi, JP;
Atsushi Yamamoto, Osaka, JP;
Hirotaka Ishihara, Ibaraki, JP;
Koichi Ogawa, Hirakata, JP;
Susumu Inatsugu, Hirakata, JP;
Tomoyuki Maeda, Kawanishi, JP;
Atsushi Yamamoto, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A top-loading monopole antenna apparatus having a feeding point is provided for use in a communication system such as a mobile communication system or the like. The top-loading monopole antenna apparatus includes a grounding conductor, a top-loading electrode, a linear conductor element, and a short-circuit conductor. The grounding conductor is provided so as to oppose the grounding conductor. The linear conductor element electrically connects the feeding point with the top-loading electrode, and the short-circuit conductor electrically connects the top-loading electrode through a reactive element. This antenna structure leads to a height which is lower than that of prior art, and easy impedance matching.