Spherical Reflector in Chiral Medium Supporting Positive Phase Velocity and Negative Phase Velocity Simultaneously

Abstract

Focused high frequency electromagnetic waves reflected from a PEC spherical surface placed in homogeneous, reciprocal and isotropic medium with high chirality parameter are analyzed. The value of the chirality parameter is set such that it simultaneously supports modes of negative and positive phase velocities. Present work is an extension of the previous work, in which the chiral medium supports only positive phase velocity. Using the previous derived expressions, line plots in the focal region are obtained.