Interelement interactions in phased arrays: Theory. methods of data analysis and theoretical simulations

A theoretical review is done of the effects of multiple reflections and mutual impedances in array environments. Possible methods of far-field pattern data analysis to recover interaction effects are studied. The authors use theoretical expressions derived earlier to calculate in a two-element linear array the mutual-impedance matrix and effective excitations of elements as functions of interelement separation and n sub max, the maximum mode number in the radiation pattern of the elements. Generalizations to two- and three-dimensional arrays are discussed.