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. 22, 1994
Filed:
Mar. 11, 1993
Toshihiro Sezai, Tokyo, JP;
National Space Development Agency, Tokyo, JP;
Abstract
A beam of a main antenna is scanned at a constant speed in the direction of compression of the beam width over the range of from (c-a) degree to (c+a) degree with an arbitrary angle c set as a reference angle, and a beam of a sub antenna is scanned by using a phase shifter at a constant speed in the direction of compression of the beam width over the range of from (c-b) degree to (c+b) degree where b represents an angle corresponding to the first zero point of a pattern of the sub antenna and larger than the 1/2 scan angle a of the main antenna. Received signals of both the antennas obtained by the beam scans are subjected to an in-phase multiplication process in a multiplying circuit for beam compression of the received pattern of the main antenna.