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. 16, 2002
Filed:
Jul. 19, 2000
Douglas E. Heckaman, Indialantic, FL (US);
Harris Corporation, Melbourne, FL (US);
Abstract
A phased array antenna includes an antenna housing having an array face defining an electrically conductive ground plane layer. A plurality of millimeter wavelength patch antenna elements are positioned on the array face and each include a primary substrate having front and rear sides and a driven antenna element positioned on the front side of the primary substrate. A ground plane layer is positioned on the rear side of the primary substrate and a dielectric layer is positioned on the ground plane layer. A microstrip quadrature-to-circular polarization circuit is positioned on the dielectric layer. A parasitic antenna element layer is spaced forward from the driven antenna element and at least one spacer is positioned between the parasitic antenna element layer and the primary substrate. This spacer is dimensioned for enhanced parasitic antenna element performance at millimeter wavelength radio frequency signals.