Abstract
Electromagnetic radiation of a line source scattered by a nihility cylinder, coated with a double positive (DPS) or double negative (DNG) layer, is investigated theoretically. The response of coated nihility circular cylinder is observed and it is noted that how the results obtained for this configuration differ from those of a coated perfect electric conductor (PEC) cylinder. It is assumed that both the nihility cylinder and the coating layer are infinite along the cylinder axis. The obtained numerical results are compared with the published literature. It is seen by the analysis that the directivity of the coated cylinder may be further increased when the PEC cylinder is replaced by a nihility cylinder as a core of the coated geometry at an optimized frequency.
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