Abstract: Metal antennas currently in implementation use metallic conductor as guiding medium for electromagnetic

Radiations. Plasma antennas uses ionized medium. The plasma antenna is a radiofrequency antenna formed by a plasma columns, filaments or sheets, which are excited by a surface wave. The relevance of this device is how rapidly it can be turned on and off only applying an electrical pulse. In this paper we have discussed the basic theory, operation of the plasma antenna. We have also given the features, advantages and applications for the same.

Keywords: Plasma Antenna, Plasma frequency, ionized gas, metal antenna