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:
Nov. 04, 2008
Filed:
Aug. 23, 2006
Applicant:
Hideaki Shimoda, Tokyo, JP;
Inventor:
Hideaki Shimoda, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 7/08 (2006.01); H01Q 1/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
A monopole antenna comprising an antenna conductor to transmit or receive a radio wave, and an inductor either inserted in the antenna conductor or connected to an end of the antenna conductor. The inductor includes a first conductor electrically connected to the antenna conductor, and a magnetic material adjacent to the first conductor. The permeability of the magnetic material varies with a negative gradient with respect to the frequency of the radio wave.