A Compact Differential-Fed Half-Elliptic Monopole Antenna with Triple Band-Notched function.

A compact half-elliptic monopole antenna with triple notched-bands for UWB application, which is driven with differential feeding systems, is proposed. The basic antenna consists of two symmetrical half-elliptic patches and a modified ground plane. To reject the 5.5-GHz WLAN band effectively, two pairs of Ω-shaped strips are placed as parasitic elements close to the feedline. By introducing rectangular SRRs and an Ω-shaped slot on the radiators, the operating bands of 3.5-GHz WiMAX and 8-GHz ITU can be notched, respectively. Compared with conventional single-ended feed antennas, the proposed differential-fed antenna can achieve better polarization purity, especially in the high-frequency band. [ABSTRACT FROM AUTHOR]