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. 28, 2007
Filed:
Jul. 14, 2003
Toshihito Habuka, Tamamura, JP;
Masaki Noda, Chigasaki, JP;
Hiroshi Nogami, Hujisawa, JP;
Toyokazu Hori, Kodaira, JP;
Tatsuji Matsuura, Tokyo, JP;
Kazuaki Hori, Yokohama, JP;
Naoto Inokawa, Takasaki, JP;
Toshihito Habuka, Tamamura, JP;
Masaki Noda, Chigasaki, JP;
Hiroshi Nogami, Hujisawa, JP;
Toyokazu Hori, Kodaira, JP;
Tatsuji Matsuura, Tokyo, JP;
Kazuaki Hori, Yokohama, JP;
Naoto Inokawa, Takasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A wireless LAN system has auto gain control with no work load applied to its baseband processing block. When the wireless LAN system gets ready to receive a signal, the gain control circuit switches between the receiving antennas. The gain control circuit sets gain setting value time divisional data according to the level of a received signal to roughly control the gain to be set in the LAN and the gain to be set in two programmable gain amplifiers.