This newly revised third edition of an Artech House classic, Phased Array Antenna Handbook, Second Edition, offers a complete and up-to-date comprehensive treatment of array antennas and systems. This edition provides a wealth of new material, including expanded coverage of phased array and multibeam antennas. New modern machine learning techniques used for analysis are included. Additional material on wideband antennas and wideband coverage in array antennas are incorporated this book, including new methods, devices, and technologies that have developed since the second edition.