Analysis of Cylindrical Stripline with Multilayer Dielectrics

An inhomogeneous, multidielectric-layered cylindrical stripline using TEM-model approximation is analyzed. A simple, closed-form expression for the characteristic impedance of an inhomogenous cylindrical stripline is derived. Numerical results on the characteristic impedance are compared with the results obtained by Wang [1], and also with the results obtained by the conformal transformation [2]. Extensive data on the impedances of inhomogeneous cylindrical stripline are also presented.