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:
Jan. 13, 2009
Filed:
May. 23, 2006
Masaru Kanazawa, Kawasaki, JP;
Shin Watanabe, Kawasaki, JP;
Masaru Kanazawa, Kawasaki, JP;
Shin Watanabe, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The present invention relates to an antenna apparatus corresponding to a plurality of multi-bands, etc. and makes a plurality of radio communication frequencies easily changed or set. The present invention includes a passive element composed of a plurality of element units (elements) linked with a switching element (PIN diode) between the element units, and since the operating frequency of the passive element is switched by opening and closing the switching element and the passive element acts as a waveguide element, a radiation pattern can be acquired by the passive element and the effect of a human body is reduced on the radiant efficiency.