Impedance bandwidth enhancement of UWB monopole antenna by using rectangular shaped slot

This paper presents a new design of a wide band monopole antenna with excellent impedance matching to enhancement the impedance bandwidth. The impedance bandwidth enhancement is achieved by inserting only one rectangular shape slot on the rectangular patch of the monopole antenna instead of inserting more than one slot on the patch as usual. Also the ground plane (GP) dimensions are very important parameters in the design of these antennas, because of strong dependence of bandwidth on ground plane size. Results and performance optimizations are carried out by using the commercial EM wave simulation program and FDTD technique.