Multiband and Wider Bandwidth Plasma Antenna Design Using 3D FDTD

ABSTRACT In this study, the far‐field characteristics of a plasma dielectric resonator antenna are investigated. The internal structure of the antenna is filled with a plasma material. Surface currents are obtained in an imaginary closed area formed at a certain point outside the plasma antenna. Then, the near field‐far field transformation is performed with the FFT method using the surface currents. The field distributions in the far field of the plasma antenna have been evaluated using three‐dimensional FDTD. The system has shown to work in multiband with wider bandwidths.