ARUN K. BHATTACHARYYA, PhD, is a recognized expert in the field of array antennas. A fellow of the IEEE, his array analysis software and innovative array element designs have been implemented in several aerospace and satellite industries. He has published over ninety research papers in IEEE, IEE, and other international journals and proceedings, and holds ten patents. He is a recipient of several honors and awards including the Hughes Technical Excellence Award, Boeing Special Invention Award, Boeing patent awards and a Boeing technical fellowship. At present he is with Northrop Grumman Space Technology and holds a senior-grade scientist position. His previous works include Electromagnetic Fields in Multilayered Structures: Theory and Applications.