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. 18, 2002
Filed:
Jun. 27, 2000
Mohamed Said Sanad, Reno, NV (US);
Other;
Abstract
An antenna structure includes a ground plane, a layer of dielectric material having a first surface overlying the ground plane and an opposing second surface, and an electrically conductive layer overlying the second opposing surface of the dielectric layer. The electrically conductive layer is differentiated into a plurality of antenna elements including a driven antenna element and first and second non-driven, parasitic antenna elements. Each of the elements has a shape of a parallelogram having parallel first edges of length L and parallel second edges of length W, wherein one of the first edges of the first parasitic element is disposed substantially along one of the first edges of the driven element at a gap width W , and wherein one of the first edges of the second parasitic element is disposed substantially along the opposite one of the first edges of the driven element at the gap width W . Each of the antenna elements includes means for shorting the electrically conductive layer to the ground plane at a region proximate to one of the second edges of the electrically conductive layer. Also, each of the antenna elements has a resonant frequency, wherein the resonant frequencies are varied from each other using only the means for shorting. The antenna structure further includes means for coupling radio frequency energy to the driven antenna element of the electrically conductive layer.