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:
Feb. 21, 2006
Filed:
Mar. 11, 2002
Hideki Sasaki, Minato-ku, JP;
Masaharu Imazato, Minato-ku, JP;
Yuji Muramatsu, Kakegawa, JP;
Toshio Kaku, Kakegawa, JP;
Hidenori Muramatsu, Kakegawa, JP;
Toshihide Kuriyama, Minato-ku, JP;
Takashi Yoshinaga, Minato-ku, JP;
Hideki Sasaki, Minato-ku, JP;
Masaharu Imazato, Minato-ku, JP;
Yuji Muramatsu, Kakegawa, JP;
Toshio Kaku, Kakegawa, JP;
Hidenori Muramatsu, Kakegawa, JP;
Toshihide Kuriyama, Minato-ku, JP;
Takashi Yoshinaga, Minato-ku, JP;
NEC Corporation, Tokyo, JP;
Abstract
Second ground plane (), substantially rectangular in shape, is connected to first ground plane () mounted with a data processing circuit, and radio communication circuit () makes radio communications at communication wavelength λ. A portion of second ground plane () from ground connecting means () to ground connecting means () along continuous edges of second ground plane () acts as an antenna. However, since the longest distance a between a plurality of ground connecting means () along the continuous edges of second ground plane () satisfies 'a<λ/2α' (where α is a coefficient equal to or larger than '1'), its resonant frequency is sufficiently higher than the communication frequency of the radio communication circuit.