Design of Compact Frequency Reconfigurable Antenna with Defected Ground structure for UWB applications

This paper is reported the design of a novel Compact frequency Reconfigurable Antenna with using Defected Ground structure (DGS). The bandwidth of the proposed antenna is increased by using DGS. The resonances frequency of the proposed antenna can be reconfigured into four different modes. The designed antenna is able to cover the frequency band 3-22 GHz, and perform the operation of removal frequency band in different modes. Changing the mode of antenna is done by three pin diode switches that are located in ground plane.