Patent attributes
A connected-slot antenna includes a dielectric substrate, a circular patch overlying the dielectric substrate, and a first conductive ring surrounding the circular patch and overlying the dielectric substrate. The first conductive ring is isolated from the circular patch by a first connected slot. At least four feeds are coupled to the circular patch. Each of the at least four feeds are spaced from adjacent ones of the at least four feeds by approximately equal angular intervals. A metamaterial ground plane includes a plurality of conductive patches and a ground plane. The plurality of conductive patches are separated from the circular patch and the first conductive ring by at least the dielectric substrate. The ground plane is electrically coupled to at least a first portion of the plurality of conductive patches. One or more of the plurality of conductive patches and the ground plane are coupled to ground.
