Potential Use of Cold Plasma Discharges for Frequency Reconfigurability in a Sievenpiper Mushroom Metasurface

Abstract

This article presents a parametric study using full-wave simulations about the potential use of cold plasma discharges to achieve frequency reconfiguration on a Sievenpiper mushroom metasurface. The study was done by inserting plasma tubes in between the patches of the mushroom structure, in three different positions with respect to the top of the metasurface, and varying the electronic density while keeping the plasma collision frequency. The obtained results show that it is possible to shift the stop-band generated by the metasurface around 25% towards lower frequencies for an electron density value inside the tubes of 1014 cm−3, when they are placed in between the top patches of the metasurface. Additional insertion losses are exhibited when operating near the plasma frequency.

Research on the electromagnetic characteristics of metasurfaces based on air dielectric substrates

“…11,12 Some metasurface antennas have the capability of frequency reconfiguration, making them suitable for communication requirements in different frequency bands. [13][14][15][16][17][18] Additionally, some metasurface antennas can control the radiation pattern by adjusting the phase and amplitude of the metal elements, allowing for changes in the radiation direction and beam width according to specific needs. This feature is highly valuable for applications such as wireless communication, radio wave imaging, and radar.…”