Reconfigurable antenna parameters with the change in the position of switches

Abstract

In this paper the reconfigurable dual band micro strip patch antenna with resonant frequencies 1102MHz and 912MHz is analyzed with the change in position of internal two switches which are connecting the four antenna patches. It is showed that reconfigurable antenna changes the basic parameters with the change in the position of the switches which are being used to connect the antenna structure. A micro strip patch antenna of dimension (width 100mm, length 100mm and height 30.4mm) is designed. The dual frequency band reconfigurable antenna is achieved by using two copper tapes for connecting the antenna internal elements. The reconfigurable antenna consists of a FR4 substrate containing the four copper annealed patches which are connected by two copper switches. The software CST MW studio is used for simulation. The results show the variation of the re-configurability of the antenna with the change of position of the internal switches of the reconfigurable antenna The change in the antenna parameters like Return loss, resonant frequency, bandwidth and directivity are described for both frequency bands. With the change in the position of the switches of reconfigurable antenna the return loss is improved, resonant frequency is being changed, Bandwidth of the antenna is changed and the radiation pattern remains same. The idea to change the basic parameters of the reconfigurable antenna by only changing the position of the reconfigurable antenna switches can provide another simple approach to make an antenna reconfigurable in frequency agility. The future work for researchers is recommended to use diode switches in the place of copper tapes. The position of the switches is changed simultaneously and some more results can be extracted while changing the position of one switch and keeping the position of second switch fixed