A low-profile dual polarized antenna with enhanced bandwidth for 2.4 GHz WLAN application

This paper proposes a novel low-profile dual polarized antenna for 2.4 GHz application. The proposed antenna consists of a circular patch with four curved T-stubs and a differential feeding network. Due to the parasitic loading of the curved T-stubs, the bandwidth has been improved. Good impedance matching and dual-polarization with low cross polarization have been achieved within 2.4-2.5 GHz, which is sufficient for WLAN application. The total thickness of the antenna is only 0.031A,_o, which is low-profile when compared with its counterparts.