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. 07, 1989
Filed:
Feb. 25, 1986
Kokusai Denshin Denwa Kabushiki Kaisha, Tokyo, JP;
Abstract
A multi-reflector antenna is disclosed which is arranged so that a main reflector surface, a subreflector surface and a primary radiator are electro-magnetically coupled together. When the main reflector is represented by a coordinate z=z(.rho., .psi.) using cylindrical coordinate system (z, .rho., .psi.) in which the direction of radiation of a main beam of the main reflector surface is in correspondence with the z-axis and the subreflector surface is represented by a coordinate r=r(.theta., .phi.) in a vector system using a spherical coordinate system (r, .theta., .phi.) in which the Snell's reference direction of the primary radiator is set to .theta.=0, the said z(.rho., .psi.) and r(.theta., .phi.) are so determined as to satisfy the law of reflection, a condition of constant path length and the following relation:
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile