CPW-Fed UWB Slot Antenna with Reconfigurable Rejection Bands

A coplanar waveguide (CPW) fed Ultra Wideband (UWB) slot antenna with reconfigurable rejection bands is presented in this paper. The antenna has a rectangular slot with triangular structure that acts as a tuning stub with CPW feed. The notch band is achieved by inserting a rectangular slot in the ground plane with a length of λ/2. The rejection of the bands 3.1 GHz – 3.9 GHz, 4 GHz–5.3 GHz and 4.1 GHz–5.9 GHz are achieved by switching the diodes placed over the ground slot. The characteristics of the designed structure are investigated by using MoM based solver, IE3D. Detailed simulation results of the proposed antenna are presented in this paper. The simple configuration and low profile of the proposed antenna leads to easy fabrication that may be built in any wireless UWB device applications where reconfigurable rejection bands are required.