A Frequency Reconfigurable Monopole Antenna with Switchable Symmetric Slot Strcture

In this paper, a novel compact frequency-reconfigurable monopole antenna with switchable symmetric slot structure is presented. The frequency-reconfigurable capability of the antenna is achieved by using a switchable slotted structure on the ground plane. The designed antenna has a simple structure and compact size of 40X40 mm . The antenna, which supports most applicable frequency bands above 2 GHz The UWB monopole antenna can be reconfigured by using a slotted structure placed on the ground plane.The antenna is further modified with a symmetric slot structure.By placing slot on the patch makes this antenna to avoid a particular band of frequency.So the resulting antenna posses band notch effect.,can be used in multiradio wireless systems. Moreover, the proposed antenna, which has a combined dual and narrowband functionality.The antenna is intended for use in multiradio wireless applications, cognitive radio,(MIMO) and satellite communication.