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:
May. 13, 2014
Filed:
Oct. 01, 2009
Applicant:
Jonathan P. Doane, Cedar Rapids, IA (US);
Inventor:
Jonathan P. Doane, Cedar Rapids, IA (US);
Assignee:
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An antenna structure including a ground plane is capable of producing an EM interference pattern to produce signal gains at a zenith of the antenna. The slots in the ground plane are positioned at a predetermined distance from a radiator and extend a predetermined distance from the axis of the antenna. The slots generate an interference pattern relative to the radiated signal to create a circular polarization thereby producing a signal gain at the zenith of the antenna. The slots may be provided during the manufacturing process of the ground plane or added later to existing antennas.