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. 05, 2005
Filed:
Jan. 07, 2004
Masaru Shikata, Fukushima-ken, JP;
Kazuhiro Sasaki, Fukushima-ken, JP;
Norio Tanaka, Fukushima-ken, JP;
Masaru Shikata, Fukushima-ken, JP;
Kazuhiro Sasaki, Fukushima-ken, JP;
Norio Tanaka, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A dual band antenna contains a first radiating conductor plate disposed substantially parallel to a grounding conductor, a power-supplying conductor plate extending downwards from the first radiating conductor plate, a connecting conductor plate for connecting the first radiating conductor plate to the grounding conductor, a second radiating conductor plate provided upright beneath the first radiating conductor plate and having a substantially wedge-shaped, elastically deformable portion, and a synthetic resin adjusting screw threaded to the first radiating conductor plate for depressing the top portion of the second radiating conductor plate downwards. The first and second radiating conductor plates resonate at first and second frequencies respectively (with f>f). The gap between the second radiating conductor plate and the first radiating conductor plate can be changed.