Temperature Dependent EM Investigation of Inhomogeneous Dielectric Wall for Application in Ablatable Radome

Abstract

This paper presents the temperature dependent electromagnetic (EM) analysis of an inhomogeneous dielectric wall for application in airborne ablatable radomes. The dielectric wall considered here consists of the inner layer coated with the ablative material. The inner layer of the radome is modelled as the inhomogeneous planar layer (IPL) to take into account the temperature gradient existing across its width. Equivalent transmission line method is used to compute the EM characteristics of the dielectric wall in the low and high velocity modes of operation. It will be shown that the performance of the dielectric wall modelled as IPL is superior in both the modes of operation.