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:
Jun. 05, 2007
Filed:
Jan. 16, 2004
Yutaka Saito, Nomi-gun, JP;
Hiroyuki Uno, Ishikawa-gun, JP;
Genichiro Ota, Miura, JP;
Hiroshi Haruki, Yokohama, JP;
Yutaka Saito, Nomi-gun, JP;
Hiroyuki Uno, Ishikawa-gun, JP;
Genichiro Ota, Miura, JP;
Hiroshi Haruki, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Linear elementstoare conductors, which have the element length equivalent to half a wavelength, have been placed so that they may draw a diamond shape. Delay elementsandare bent conductors, which have a total length equivalent to one fourth wavelength and a length Lequivalent to one eighth. The linear elementsandare connected one another via the delay element, while the linear elementsandare connected one another via the delay element. A feeding sectionis connected to each of the ends of the linear elementsandfor feeding power to them. Between the tips of the linear elementsand, a gap with a length Lis left. A reflectorhas been placed at a distance h from a diamond-shape antenna with delay elements along the −Z axis, the distance h being equivalent to 0.42 wavelength. This achieves the antenna device, which may be suitably mounted on any of small wireless apparatuses and form a primary beam, of which horizontally-polarized wave or vertically-polarized wave tilts toward the horizontal direction.