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. 10, 2004
Filed:
Nov. 04, 2002
Tomohiro Mizuno, Tokyo, JP;
Hiroyuki Satou, Tokyo, JP;
Izuru Naitou, Tokyo, JP;
Soichi Matsumoto, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A multibeam antenna apparatus is disclosed. The multibeam antenna apparatus includes a main reflector ( ), a sub-reflector ( ), a focused beam feeder ( ), a primary radiator array ( ) having a plurality of primary radiators ( ), and a lens array ( ) having a plurality of wavefront transformation lenses ( ) corresponding to the plurality of primary radiators ( ), respectively. The lens array ( ) can be placed in the vicinity of a front end of the primary radiator array ( ). As an alternative, the lens array ( ) is placed in an electric wave propagation range of the focused beam feeder ( ) where multiple beams which constitute a multibeam are spatially isolated from one another in terms of electric power. Thus the multibeam antenna apparatus can prevent an error from occurring in the orientation of each beam.