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:
Nov. 03, 1981
Filed:
Feb. 25, 1980
Applicant:
Inventor:
Pierre Crochet, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
343756 ; 3437 / ; 343872 ;
Abstract
A reflection-type polarizer for modifying the polarization of an incident electromagnetic wave. The polarizer comprises a reflector positioned at a predetermined distance from a polarization filter constituted by a metal plate having a bi-dimensional periodic network of resonant slots at the operating frequency. The polarizer has application to microwave antenna systems and particularly to Cassegrain antennas.