2024/05/05 by Samsud Moon, Moon, Samsud
Engineering · #Antenna Design and Analysis #FOS: Physical sciences #Plasma Diagnostics and Applications #Plasma Physics (physics.plasm-ph)
paper · pdf · doi:10.48550/arxiv.2405.03077
openalex publication_date 2024/05/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A three-dimensional model of a novel plasma based electrically small antenna is developed for investigating the gas properties and antenna parameters under a low pressure, low plasma temperature environment. The antenna exhibits dipole antenna-like behavior with wide-band impedance matching from 213-700 MHz. Plasma is sustained by 0.9 W of RF input power at 100 MHz and the gas pressure is strategically controlled at 500 mili-Torr. The simulated S11 is verified against the available experimental data and further antenna parameters are extracted. The proposed ESA shows dipole-like radiation pattern with a radiation efficiency of 16% at 700 MHz. The performance metric for ESAs, the Chu-limit, is exceeded by this antenna with the Bandwidth× Efficiency reaching 0.168 with a ka of 0.5571.The findings from this letter demonstrate the practicability of using COMSOL Multiphysics as a tool for predicting plasma behavior and antenna performance while the boundary conditions for all the coupled physics are respected.