2025-03-27https://repository.covenantuniversity.edu.ng/handle/123456789/33487The functionality of the plasma antenna has been narrowed to types and brand names only. The physics of its operation has been neglected and has stagnated technological innovations. The magnetic ¯eld in the sheath and plasma were investigated. Notable speci¯cations were worked out in the proposed improved cylindrical monopole plasma antenna. The occurrence of femto spin demagnetization was discovered between the duration of switch on and switch o® of the antenna. This phenomenon seems transient because magnetization is highest at the switch on/o® point.QC PhysicsArticle