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:
Jun. 28, 1977
Filed:
Sep. 08, 1975
Applicant:
Inventors:
Thomas V Sikina, Jr, Chalfont, PA (US);
Robert H Schafer, Perkasie, PA (US);
Robert T Klopach, Lansdale, PA (US);
Assignee:
American Electronic Laboratories, Inc., Colmar, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ; H01Q / ;
U.S. Cl.
CPC ...
343730 ; 343769 ; 343895 ;
Abstract
A broad-band antenna device comprising a variable aperture element which radiates or receives signals in the high frequency portion of the band and a pair of fixed aperture elements which radiate or receive signals in the low frequency portion, the variable aperture element comprising a planar spiral antenna element with a double winding which is electrically coupled to the fixed aperture elements comprising a pair of oppositely positioned center fed slot antenna elements.