Reconfigurable T-shaped antenna for S-band applications

Abstract

This paper present a reconfigurable T-shaped antenna how can operate easily at seven frequencies in S-band, the switching technique consist of an equivalent approach to PIN Diode it is to change the state of the distribution of current by insert a simple micro strip line in different positions, the simulated and de measured prototype frequency is respectively 3.12 GHz, 3.2 GHz, 3.31 GHz, 3.44 GHz, 3.56 GHz, 3.76 GHz, 4 GHz. The antenna is fabricated using FR4 substrate with relative permittivity of 4.4 and pert tangent of 0.02.