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. 29, 2008
Filed:
Aug. 27, 2004
Isao Takahashi, Miyagi, JP;
Kazuo Nozawa, Miyagi, JP;
Hiraku Akiho, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A magnetic core member, an antenna module, and a portable communication terminal having this, which have a configuration capable of satisfying enhancement of communication characteristics of antenna coils as well as their sufficient electromagnetic shielding function from a shield plate. A magnetic core member () is disposed between an antenna substrate having antenna coils (), () formed therein and a conductive shield plate (), and is formed by filling an insulating material () with a magnetic powder (). The magnetic core member () has a two-layered structure including a first layer (A) and a second layer (B), thereby making a filling rate of the magnetic powder () in the first layer (A) be lower than that of the magnetic powder () in the second layer (B) so that a first surface () on a side opposed to the antenna substrate () and a second surface () on a side opposed to the shield plate () have magnetic properties different from each other.