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:
Mar. 15, 2016
Filed:
Oct. 14, 2010
Shuya Kishimoto, Tokyo, JP;
Kenichi Maruhashi, Tokyo, JP;
Kenichi Hosoya, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a phased array antenna radio communication apparatus including a plurality of antennas, a radio communication apparatus is provided which can reduce an influence of the local leak signals on the radiation direction of transmission signals. Local signal phase shifters-to-are used to control phases of local signals to be input to quadrature modulators-to-, and baseband signal phase shifters-to-are used to control phases of baseband signals to be input to the quadrature modulators-to-. The radiation direction of the local leak signals to be sent from transmission antennas-to-can be controlled by the local signal phase shifters-to-, and the radiation direction of the transmission signals can be controlled by both of the local signal phase shifters-to-and the baseband signal phase shifters-to-