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Analysis of Near-Field Effects for Electromagnetic Properties of Pasteur Chiral Metamaterial Slabs

This letter proposes a correct and robust retrieval method for extraction of electromagnetic properties of Pasteur chiral metamaterial (MM) slabs having asymmetrical transmission properties when near-field effects are present. The ray-tracing method has been applied to derive underlying equations for semi-infinite reflection coefficients of these slabs. A U-shaped Pasteur chiral MM slab was considered as a test slab to examine the near field effects on extracted semi-infinite reflection coefficients. It is noted that near-field effects should be taken into account for correct electromagnetic properties of Pasteur chiral MMs especially around resonance regions.