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:
Sep. 28, 1976
Filed:
Mar. 28, 1975
Applicant:
Inventors:
William C Blanchard, Baltimore, MD (US);
James E Kreiner, Jr, Baltimore, MD (US);
Assignee:
The Bendix Corporation, Southfield, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
343815 ; 343839 ; 343840 ; 343872 ;
Abstract
A mono-lobed scanner used in a direction finding radar receiver has an antenna in the form of a parabolic dish having four parallel dipole antenna elements which are located physically about the parabola focal point. The outputs of the dipole elements are combined to produce a sum signal, a delta elevation signal and a delta azimuth signal. Pointing or positional inaccuracy of the antenna caused by cross polarization products is corrected by manipulation of metalic rods located about the dipoles and in relatively close proximity thereto.