SOME EXPERIMENTAL RESULTS ON THE DISPERSIVE BEHAVIOR OF CHIRAL CORN COMPOSITES

Planar samples consisting of a dispersion of high-permittivity ceramic helices of left and/or right handedness in epoxy host media were fabr icated. Their normal incidence reflection and transmission coefficient s were measured in the range 5.8-18 GHz using a free-space microwave s ystem. The corresponding rotation angles and ellipticities were comput ed. A comparative study of the properties of the various composites is reported here; in particular their effectively chiral or non-chiral c haracteristics are demonstrated. The dispersive frequency response of the samples is presented and compared with that of composites containi ng metallic chiral inclusions.