This book highlights the application of active array antennas in high-resolution microwave imaging radar systems. It introduces the basic principles, analytical methods, and performance parameters of active array antennas to achieve low profile, high efficiency, and lightweight. The book systematically elaborates the architecture, analysis, and engineering practice to achieve wideband, multi-band, multi-polarization, and common aperture in active array antennas. It explores hotspot technologies of digital array antennas, microwave photonic array antennas, and active packaging antennas. By presenting over 300 illustrations and diagrams, including schematic diagrams, block diagrams, relation diagrams, and breakdown drawings, the book enables a thorough understanding of the antenna array microsystem as the advanced phase of active array antennas and the direction of future R&D.  The book is a good reference source for researchers and engineers interested in the engineering and implementation of microwave imaging radar systems and antenna technology.

Jiaguo LuJiaguo Lu is a professor at the East China Research Institute of Electronic Engineering and a doctoral supervisor at the University of Science and Technology of China and Anhui University, China. He also serves as the vice-chair of the Antenna Society of the Chinese Institute of Electronics and a member of the Radar Society and the Microwave Society. Lu is a winner of the Second Prize of the National Science& Technology Progress Awards of China. During his long-term research, Lu has recognized and addressed emerging issues in the development of high-resolution, multi-polarization, and multi-band microwave imaging radars and active array antennas using microwave electromagnetic fields.Wei WangWei Wang is a professor at the East China Research Institute of Electronic Engineering and a senior member of the Chinese Institute of Electronics. Wei is a winner of the Second Prize of the National Science& Technology Progress Awards of China. His research interests include waveguide slot antennas, microstrip antennas for radars, compact ultra-wideband (UWB) for wireless communications, microwave passive devices and circuits, and microwave/millimeter systems.Xiaolu WangXiaolu Wang is a senior researcher at the East China Research Institute of Electronic Engineering. He has long been engaged in the research and development of antennas and microwave techniques for electronic communication systems, especially in the design and integration of microwave systems and RF active modules. He also has extensive engineering experience.Yongxin GuoDr. Yongxin Guo is a full professor at the Department of Electrical and Computer Engineering, National University of Singapore. He has authored over 500 international journal and conference papers and four book chapters. Dr. Guo is a fellow of IEEE and a fellow of the Academy of Engineering, Singapore. He is an editor in chief of IEEE Journal of Electromagnetics, RF and Microwave in Medicine and Biology for the term of 20202023. He is a distinguished lecturer for IEEE Antennas and Propagation Society (2022-2024). His current research interests include antennas, microwave integrated circuits, electromagnetics, wireless power transfer, and wireless sensing for wireless communications, biomedicine, and Internet of things.

Chapter 1 Introduction.- Chapter 2 Analysis and Optimization of Array Antennas.- Chapter 3 Errors and Compensation of Array Antennas.- Chapter 4 Broadband Active Array Antennas.- Chapter 5 Integration of Active Array Modules.- Chapter 6 Shared-Aperture Array Antennas.- Chapter 7 Active Antenna-in-Package.- Chapter 8 Digital Array Antennas.- Chapter 9 Microwave Photonic Array Antenna.