Abstract
Abstract This paper introduces a novel plasma antenna utilizing a U-shaped compact fluorescent lamp (CFL) as the radiating element, excited by an alternating current (AC) supply. Unlike conventional designs, the coupling sleeve in this plasma antenna is positioned beneath the ground plane, reducing unwanted radiation when the plasma is deactivated. Two prototypes were fabricated, varying only in height (35.7 mm and 77 mm). Measurements at 900 MHz revealed significant differences in radiation patterns between ON and OFF states, indicating effective radiation in the ON state. However, at 450 MHz, only the shorter antenna (35.7 mm) exhibited acceptable performance. The results demonstrate that a U-shaped CFL can serve as an efficient plasma antenna, with performance comparable to classical dipole antennas within the tested frequency range.
Published Version
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