Design of frequency reconfigurable antenna for SDR application

Abstract

Software Defined Radio (SDR) is considered to be ultimate solution for future of commercial and military wireless and medical wireless communication systems. The application of SDR over wide frequency bands is constrained at the RF front end especially antenna. CST design is a powerful and easy to use schematic design tool that speed up analysis. In this project we are using CST software to design a reconfigurable antenna for SDR applications. We designed a O shape antenna for switching the frequencies by ON and OFF by micro strip feed connection mode through proper dimension material. In this project we use flexible structure, feed max gain and antenna parameters. The frequency here we took is 2.4GHZ. When it's in ON state the frequency range is above 2.4-2.53GHZ while when it's in OFF state the frequency is 5-5.8GHZ and above. So through this we can achieve required radiation and antenna which is flexible enough to get two frequencies through. Which get less return loss is obtained and antenna is designed for SDR applications.