3D FDTD analysis of a compact UWB planar antenna

In this paper, a compact UWB rectangular patch antenna with two convex circled forms is presented. The antenna is printed on a partial grounded FR4 epoxy substrate. Simulated results using Ansoft HFSS and FDTD implemented code concord well with the measured results. It prove that this antenna can operate from 3.55GHz to 4.6 GHz and from 7.4GHz to 11.7GHz for S11<−10dB making this antenna suitable for some radio frequencies applications.