Analysis of electromagnetic scattering from linear periodic arrays of perfectly conducting bodies using a cylindricalcurrent model
Abstract
A novel solution is presented for the problem of threedimensional electromagnetic scattering of a timeharmonic plane wave from an infinite periodic linear array of finitesize perfectly conducting bodies. A set of fictitious sources comprising periodic and properly modulated cylindrical electric current sheets of cross polarization is used to simulate the scattered field. The complex amplitudes of these fictitious sources are adjusted to render the tangential component of the electric field zero at a selected set of points on the surface of one of the scatterers. The suggested solution procedure is simple to implement and is applicable to linear periodic arrays composed of disjoint bodies of smooth, but otherwise arbitrary, shape. The accuracy of the method is demonstrated. It is shown that in the limiting case of widely spaced spherical scatterers the numerical solution agrees well with an approximate analytic solution.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 September 1991
 DOI:
 10.1109/8.99041
 Bibcode:
 1991ITAP...39.1332B
 Keywords:

 Antenna Arrays;
 Current Distribution;
 Electric Conductors;
 Electromagnetic Scattering;
 Linear Arrays;
 Computerized Simulation;
 Cross Polarization;
 Floquet Theorem;
 Harmonics;
 Communications and Radar