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:
Jun. 16, 1998
Filed:
Oct. 26, 1995
Norihito Kinoshita, Tokyo, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A receiving system comprises a plurality of receiving branches 1, 2, - - - n each including an adaptive antenna. A variable gain controlled amplifier 31, 32, - - - 3n is provided in each receiving branch 1,2, - - - n for setting an amplification factor of a receiving signal in each receiving branch. Automatic gain control unit 7 inputs receiving signals from the plural receiving branches 1,2, - - - and n at predetermined sampling intervals and controls the amplification factors of the variable gain controlled amplifiers 31, 32, - - - 3n. An adaptive antenna processing unit 8 performs an adaptive antenna processing based on the receiving signals sent from the plural receiving branches 1,2, - - - n. A timing control device 71, 72 or 73 allows the automatic gain control unit 7 to renew the amplification factor of each variable gain controlled amplifier 31, 32, - - - 3n in response to each elapse of a predetermined interval longer than the sampling interval of the automatic gain control unit 7. The automatic gain control unit 7 independently controls the amplification factors of the variable gain controlled amplifiers 31, 32, - - - 3n.