||CMC: Computers, Materials & Continua, Vol. 40, No. 2, pp. 131-143, 2014
||Full length paper in PDF format. Size = 653,816 bytes
||Inhomogeneous planar dielectric radome, Equivalent transmission
line model, EM performance parameters.
||Controllable artificial dielectrics are used in the design of radomes to
enhance their electromagnetic (EM) performance. The fabrication of such radome
wall structures with controllable dielectric parameters seems to be an arduous task.
Further even minor fluctuations of dielectric properties of radome wall due to fabrication
uncertainties tend to result in drastic degradation of radome performance
parameters. In the present work, a novel inhomogeneous radome with graded variation
of dielectric parameters is proposed which limits the constraints on fabrication
and facilitates excellent EM performance characteristics. This radome wall consists
of five dielectric layers cascaded such that the middle layer has maximum dielectric
constant and electric loss tangent. The dielectric parameters of the layers on both
sides of the middle layer decrease in a graded (or step-wise) manner. The EM performance
characteristics of the IPL radome with graded dielectric parameters are
superior to that of conventional monolithic half-wave radome.