SHIELDING PERFORMANCE OF SUPERCONDUCTING STRUCTURES

Document Type : Original Article

Author

Ph.D., The Egyptian Armed Forces.

Abstract

ABSTRACT
Electromagnetic shielding is one of the most promising applications of
superconductors that still needs further investigation. An enhanced model is therefore
proposed to design optimum shielding structures made from different low and high criticaltemperature
(LTS & HTS) superconductors. The proposed model incorporates classical
electrodynamics with both superconductivity macroscopic theories such as two-fluid model,
Ginzburg-Landau (GL) theory, and microscopic Bardeen-Cooper-Schrieffer (BCS) theory.
Thermodynamic properties are also included using improved Gorter-Casimir relations based
on published experimental data. General shielding effectiveness expressions are derived for
different superconducting shielding structures against generally polarized incident
electromagnetic waves. A computer algorithm is then developed to investigate the impact of
superconducting material parameters on shielding effectiveness. The limitations and
advantages of superconducting shielding structures are also discussed.

Keywords