Studying Electromagnetic Scattering by Dielectric Cylinders: An Engineering Electromagnetics’ Exercise at the Technological Educational Institute of Crete

Scattering of arbitrarily polarized electromagnetic plane waves by a dielectric cylinder buried in an unbounded dielectric space and enclosing an array of parallel doubly layered (pipeline-type) dielectric circular cylinders is studied, in case of oblique incidence. The objective of this work is to present an exercise suitable for an advanced course on engineering electromagnetics. Using the boundary-value approach combined with the generalized separation variables method, we formulate the problem via a linear algebraic system with unknowns the field expansion constants. Solving this system, with single-term matrix elements, results in analytical expressions for both the scattered field and the scattering cross section of the structure. Numerical results are given for several configurations along with comparisons with previously published data.