A rectangular patch exhibiting polarization diversity throughout a notable bandwidth is designed for operation at the 2.4 GHz WiFi band. A wideband matching technique is implemented, introducing path inequality between specular feeding points, i.e., points giving rise to a specific polarization mode. There are two pairs of such specular feeding points and two sources, offering polarization diversity when excited appropriately. Exploiting these features, linear (horizontal, vertical or diagonal) as well as RH and LH circular polarization can be achieved, over a remarkable bandwidth around the 2.4 GHz frequency band.
