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:
Aug. 07, 2012
Filed:
May. 15, 2009
Applicants:
Yasuharu Masuda, Kawasaki, JP;
Masahiro Tanabe, Kawasaki, JP;
Inventors:
Yasuharu Masuda, Kawasaki, JP;
Masahiro Tanabe, Kawasaki, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
A spiral antenna includes an antenna element which is formed in a spiral pattern on a dielectric substrate, a cavity which is formed with a space provided between the antenna element, and a magnetic material which is arranged between the antenna element and the cavity. The cross-section of the spiral antenna is formed in a manner which the sum of a distance between the antenna element and the magnetic material and a thickness of the magnetic material increases from the center portion towards the outer circumference of the spiral.