Introduction to Active Phased Arrays

At the beginning of the 21st century, the phased array is recognized as the essential technology for a wide variety of contemporary systems that extend human awareness in surveillance and sensing techniques. These range from advanced radars used for target surveillance, tracking, and identification, to sensors used for terrestrial, sea, and space applications, to precision radars used for air traffic control and landing, to advanced Satellite Communications (SATCOM) systems, to Fifth- Generation (5G) communications networks and their backhaul links. This book will cover the fundamentals of phased array systems, including contemporary and advanced methods. The principles apply to both high capability sensors and low-cost systems. Applications range from advanced and commercial radars to remote sensing, and multiple channel communications. The subject matter includes: an introductory overview, fields and waves analysis, domain analysis, fundamentals of array theory, far field synthesis, Floquet theory, aperture weighting functions, impedance and mutual coupling theory, aperture design, beamforming methods, feed networks, array error analysis, system requirements and sizing, and system design. An emphasis of this work is the array fundamentals that can be realized by analog, digital or hybrid beamforming methods, reflecting perceived trends in the industry. The text also includes ample practice cases, with examples and illustrations.