Electromagnetic Scattering From Periodic Arrays of Composite Circular Cylindrer With Internal Cylindrical Scatterers

Abstract

Abstract-A very efficient and accurate method to characterize the electromagnetic scattering from periodic arrays of two-dimensional composite cylindrical objects with internal eccentric cylindrical scatterers is presented, using the lattice sums formula and the aggregate T-matrix for cylindrical structures. The method is quite general and applies to various configurations of two-dimensional periodic arrays. The dielectric host cylinder per unit cell of the array can contain two or more eccentric cylindrical scatterers (we call them inclusions in this paper), which may be dielectric, conductor, gyrotropic medium, or their mixture with different sizes. The power reflection coefficients from one-layer or one-hundred-layered periodic arrays of composite cylinders with up to two inclusions have been numerically studied. The effect of the presence of inclusions on the properties of resonance peaks or the stopband's width will be discussed.

Two-Dimensional Electromagnetic Scattering of Non-Plane Incident Waves by Periodic Structures

“…Here we use a calculation technique of RTMA developed by Roussel [10] and Yasumoto et al [11][12][13][14] to derive the T-matrices of periodic cylinder array for plane wave incidence. Following these methods, the scattering relation of the wave amplitudes is calculated in the following form…”

Radiation Patterns Synthesis for a Conformal Dipole Antenna Array

“…Gupta et al [8] apply the vector potential method and fresnel-kirchhoff scalar diffraction field theory to analyze an elliptically bent conformal array of longitudinal slots in narrow wall of rectangular waveguide. In [9], Toyama et al analyze the characteristics of the electromagnetic scattering from periodic arrays of two-dimensional composite cylindrical objects with internal eccentric cylindrical scatterers.…”

Investigation of Electromagnetic Complex Scattering for Conductor Target Based on Electromagnetic Images Method

“…The RCS is an essential parameter in the fields such as target detection etc., which has been studied at large by the schoolars and engineers in the world [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Before the naissance of radar, the RCS of several typical targets irradiated by a homochromous plane electromagnetic wave in free space has been presented such as a conducting sphere, a coating medium sphere, a coating cylinders and an ellipsoid.…”