Amazon.com description: Product Description: Cylindrical arrays lie at the heart of the antenna systems of most major radio communication systems, including broadcasting networks, cellular phone systems and radar. Here, the authors present practical theoretical methods for determining current distributions, input admittances and field patterns of a wide variety of cylindrical antennas. Key chapters cover analysis of horizontal antennas over, on and in the earth and sea; large resonant arrays of electrically short dipoles; and the theory and techniques of experimental measurement. Written by three of the leading engineers in the field, this reference is based on research carried out at Harvard over the last 40 years.