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:
Jul. 13, 1993
Filed:
Nov. 29, 1989
Applicant:
Inventors:
Walter A Bohlman, Line Lexington, PA (US);
James M Schuchardt, Gwynedd Valley, PA (US);
Assignee:
AEL Defense Corp., Lansdale, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ; H01Q / ;
U.S. Cl.
CPC ...
343895 ;
Abstract
An antenna group comprising a plurality of spiral antennas occupies a circular space. The spiral antennas are radially symmetrically arranged about a point at the center of the circle. Each spiral antenna is deformed to occupy a substantially all of the area within a sector of the circle. The antenna may be used for detection of circularly-polarized waves of either polarization sense, or may operate with phase-sensing means to locate the source of incoming electromagnetic radiation.