Generalized coordinate transformation. (a) The original vacuum space. (b) The transformed space. The region defined by (shaded) in (a) is transformed into the region defined by (shaded) in (b).
Electric field distributions of the transparent cloaks with (a) arbitrarily conformal and (b) nonconformal boundaries under the plane wave incidence. (c) Same as (b) but with electric and magnetic loss tangent of 0.01. , .
Electric field distributions of the transparent cloak in different backgrounds. (a) A Gaussian beam propagating in the direction in the gradually changing medium, in which . (b) A Gaussian beam obliquely incident from air to the medium with a permittivity of 2 with an incident angle of 45°. (c) A Gaussian beam obliquely incident from air to the PEC sheet with an incident angle of 45°. [(d), (e), and (f)] Electric field distribution of the transparent cloak with arbitrary and nonconformal boundaries placed in the background shown in (a), (b), and (c), respectively. and .
Electric field distribution of the transparent cloak placed in the linearly changing medium in the direction. A Gaussian beam is propagating from left to right in the medium with (a) and without (b) the transparent cloak. .
Electric field distribution of a horn antenna with (a) and without (b) the transparent material. .
The scatter width of the bare metal cylinder and the transparent cloak covered one for different incident directions. Solid and dotted lines are for the bare and covered metal cylinder, respectively. The blue, green, red, and black lines (from left to right in the figure) are for the incident direction (angle) , respectively.
The profile (a), (b), and (c) for the diagonalized material parameters and the corresponding principal axis at each point (d). (a) ; (b) ; (c) ; and (d) principal axis at each point. Note only the axis is given for the sake of clarity. The in-plane vector is orthogonal with it and is perpendicular to the plane.
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