Accelerated solution of periodic problems involving arbitrarily-shaped cylindrical inclusions in stratified media

Many specific methods to improve both the efficiency and the accuracy of the numerical solution of periodic problems have been proposed, with reference to several configurations of sources in various environments (e.g., free space, multilayered media). Integral equations can be formulated by including the proper periodicity in their kernel, thus defining periodic Green\´s functions, usually expressed through impractical slowly-converging series. Effective algorithms for their calculation, known as "acceleration techniques," are then required for their fast computation.