A Plasma-Based Technique for Wideband Matching of Electrically Small Antennas

A plasma-based approach for wideband matching of electrically small antennas is introduced and validated in this work. The proposed technique relies on the negative permittivity of plasmas, which can be utilized to realize a negative capacitor within a capacitively coupled structure. The negative capacitance of plasma can compensate for the reactance of small antennas over a wide bandwidth while not introducing a significant loss. So, this technique can be a viable solution for efficient radiation over low frequency ranges, especially for high-power scenarios.