High-frequency electromagnetic modeling of electrically large conformal cylindrical dipole arrays

Conformal cylindrical dipole array situated above an electrically large and perfect electric conducting circular cylinder are studied. Array geometries include sector and azimuthal arrays above a finite sized cylinder, and an infinite array above an infinitely long cylinder. For each array configuration the scan element pattern of the central element is obtained while all other elements are match terminated. Full-wave electromagnetic simulators are used to obtain the element patterns for the finite array cases. Specifically, for the azimuthal array, a technique is developed that uses the exact currents obtained by the full-wave analyis in to determine equivalent entire domain weights to be used in a high-frequency code; the objective is to incorporate mutual coupling effects among array elements into this code. The eigenfunction of the scan element pattern for an infinite array is compared with exact solutions to determine its effectiveness as an approximate model.