Printed octagon monopole UWB antenna with band-notch by modified U-shape slot

A planar octagon monopole UWB band-notched antenna is proposed and experimentally studied. It consists of an octagon patch with a modifed U-shaped notched, which intends to obtain frequency notched for WiMAX. The proposed antenna operates from 1.93 GHz to 11 GHz for return loss of less than −10dB with 5.26-6.4 GHz notched. The notch frequency of the proposed antenna can be adjusted by controlling the location of slot. The measured results are in reasonably good agreement with the simulated results. Details of the proposed antenna design and simulation results for UWB operations are presented and discussed.