Effects of bi-isotropic coatings and bi-isotropic background media upon gain characteristics of an axially slotted cylinder

Abstract

An analysis about the effects of various bi-isotropic (BI) coatings and BI background media upon the gain characteristics of an axially slotted cylinder using numerical simulations is presented. It is investigated that chirality and Tellegen parameters of a coating and a background medium play a significant role in modifying the gain properties. It is further studied that an axially slotted cylinder when coated with a strong BI material and embedded in a free space background significantly enhances the gain in the forward direction. On the other hand, a strong Tellegen coating guides most of the radiated field from an axial slot toward rear side of the cylinder.

An axially slotted cylinder with specific inhomogeneous coatings

“…For example, high gains are preferred in point-to-point communications. This gain of an axially slotted cylinder covered with an inhomogeneous coating can be found using [11, 15, 17, 18] and given below: …”

“…The effects of various chiral and chiral nihility coatings and chiral background media upon the gain pattern of a chiral-coated axially slotted cylinder have been studied by Awan. Recently, Awan has extended the proposed theory in [17] to the bi-isotropic coatings and bi-isotropic background media in [18]. He studied that a strong bi-isotropic coating with the free space background significantly enhances the gain in the FD.…”