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Geometry for the variable impedance loaded PEC closed ring PBG (EBG) material. The outer and inner radii of the ring are and . A unit cell is defined by (a), (b), and (c). A variable impedance load is placed within the small gap. The host material’s permittivity is .
(Color) Comparison of the bulk reflectivity and between the structure with lossy (black) with and lossless (red) with for . (a) Bulk reflectivity . (b) Zoom view of . (c) Real part of . (d) Imaginary part of .
(Color) Comparison of the effective index of refraction and wave impedance between the structure with lossy (black) with and lossless (red) with for . (a) . (b) . (c) . (d) .
Phase of the bulk reflection coefficient for the composite with lossy host material.
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