Affiliations: [a] GIK Institute of Engineering Sciences and Technology,
Khyber Pakhtunkhwa, Pakistan
Correspondence:
[*]
Corresponding author: Muhammad Qasim Mehmood, GIK Institute of
Engineering Sciences and Technology, FEE, GIKI, Topi, Swabi, KPK, 23640,
Pakistan. Tel.: +92 6594694338; E-mail: [email protected]
Abstract: Analysis of high frequency field expressions for the Cassegrain
system having perfect electromagnetic conducting (PEMC) boundaries are studied.
Both the reflectors of Cassegrain system are PEMC and are embedded in chiral
medium. Two different cases have been analyzed depending upon the values of
chirality parameter (kβ). In the first case, chiral
medium supports positive phase velocity (PPV) for both the left circularly
polarized (LCP) and right circularly polarized (RCP) modes. In the second case,
chiral medium supporting PPV for one mode and negative phase velocity (NPV) for
the other mode is taken into account. Mathematical recipe proposed by the
Maslov is used to obtain the field expressions in the focal region because
geometrical optics (GO) causes non-realistic singularity in this region. Field
patterns of focal plane are given in the paper for different values of
admittance (M) of the PEMC boundary and the chirality
parameter (kβ).
