High selective metamaterial epsilon negative loaded E antenna

In this paper, we introduce a modified printed E antenna loaded with negative permittivity metamaterial structure. The proposed lading is suggested to decrease the physical size of the antenna compared to conventional printed E antenna operating at the same frequency. Moreover, the loading adds an extra resonance order which can result in sharp operating frequency with reasonable bandwidth. The antenna is designed for WiMAX service with centre frequency at 5.25 GHz and bandwidth of 200 MHz. Moreover, the antenna has very sharp selective properties to reject reception outside this band. The antenna size is only 30 × 30 mm2 which represents 64 % size reduction compared to conventional printed E antenna operating at the same frequency. The theoretical design concepts, full wave simulations and experimental measurements are introduced.