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. 12, 2002
Filed:
Nov. 28, 2000
Applicant:
Inventor:
Ronald A. Marino, Flushing, MI (US);
Assignee:
RecepTec LLC, Holly, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q 1/36 ;
U.S. Cl.
CPC ...
H01Q 1/36 ;
Abstract
A radio antenna system having a quadrifilar antenna having four helical arms and a method of feeding the arms. The antenna system comprises a first balun having a feed line and two feed points with 180° phase differential therebetween for feeding one opposite arm pair, and a second balun having a feed line and two feed points with 180° phase differential therebetween for feeding the other opposite arm pair. The two feed lines are combined in a single combiner, which provides a 90° phase differential between the feed lines.