Scattering Analysis on Parallel Multi-cylinders Based on Three-Dimensional Induced Field Ratio

To study the interfere of the complex metal cylinders on the space electromagnetic wave, a three-dimensional induced field ratio algorithm to analyze the scattering field of the finite length parallel cylinders is presented. A three-dimensional induced field ratio model is established to calculate the scattering fields by the step-current method, based on which the equivalent radiation current is derived. The impedance distribution of thin wire antenna is taken for reference to deduce the circumferential and axial direction current distribution. The induced field ratio matrix is constructed based on length and radius of cylinders and observation angle by calculating the ratio between the equivalent radiation current and the distribution current. Three parallel cylinders are arranged to obtain the scattering field of an array composed of cylinders with different length and distance as exemplified. The accuracy is proved by comparing the results and the one´s from the method of moments (MoM). In this method the induced field ratio matrix is only needed, which accelerates the computing with high accuracy, to obtain the scattering field of the array consisting of cylinders with arbitrary distance and length.