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:
Mar. 22, 2013
Jiho Ahn, Seoul, KR;
Elena V Frolova, Seoul, KR;
Jiho Ahn, Seoul, KR;
Elena V Frolova, Seoul, KR;
TELEFRONTIER CO., LTD, Seoul, KR;
Abstract
The antenna comprises main and sub reflectors, each of which being made with nonaxisymmetric curvilinear surfaces and having two planes of symmetry at the intersection. A feed is arranged between the main and sub reflectors and capable of illuminating, first, the sub-reflector and, through it, the main reflector to form plane wave front. The common focuses of the nonaxisymmetric curvilinear surfaces of the reflectors in all sections passing through the longitudinal axis Z of the antenna, is located at the portion Zof Z, wherein the length of said portion being restricted by limits F≦Z≦F, where F, Fare the minimum and maximum distances from the ends of the portion Zto the main reflector along Z. The length of Zsatisfies the following relation; F/D≦Z/D≦F/Dand 0.21≦Z/D≦0.47, 1>D/D>0.5, where Dand Dare the maximum and minimum transverse sizes of the main reflector aperture.