Phased Array Antenna Handbook, Hardcover by Mailloux, Robert J. The primary reason for using arrays is to produce a directive beam that can be repositioned (scanned) electronically. This text discusses array design issues in eight chapters: phased arrays in radar and communication systems; pattern characteristics of linear and planar arrays; pattern synthesis for linear and planar arrays; patterns of nonplanar arrays; elements, transmission lines, and feed architecture for phased arrays; summary of element pattern and mutual impedance effects; array error effects; and special array feeds for limited field-of-view and wide-band arrays.