This book investigates the emerging concept of antenna integration, which has become an important research direction in modern antenna engineering and highly integrated wireless systems. With the rapid development of mobile terminals, millimeter-wave/terahertz systems, and intelligent electronic platforms, antennas are required to support increasing functions within increasingly limited spaces. Unlike electronic components, antennas are inherently electromagnetic-size-dependent devices, making high-level integration a long-standing challenge. Antenna integration provides a new approach by enabling coordinated design of antennas with other antennas and functional modules through spatial sharing and electromagnetic functional fusion. This book introduces the fundamental theories, design methodologies, and practical implementations of antenna integration, covering antenna-antenna integration, antenna-feed integration, antenna-silicon integration, antenna-dissipation integration, and other emerging integration approaches. Representative designs are presented, including compact multi-antenna systems, wideband and multiband antennas, integrated array antennas, millimeter-wave and terahertz antennas, and multifunctional antenna systems.

Pursuing a system-level integration approach, this book demonstrates how electromagnetic interactions, structural sharing, material innovation, and functional collaboration can transform traditional antennas from independent radiating components into integrated elements of future electronic systems. It is intended for graduate students, researchers, and engineers who are interested in antenna engineering, wireless communication systems, electromagnetic integration, and advanced electronic system design.

Prof. Le Chang received his B.E. degree from Xidian University, Xi’an, China, in 2012, and his Ph.D. degree in Electronic Engineering from Tsinghua University, Beijing, China, in 2017. From 2017 to 2020, Dr. Chang worked at Huawei as a Senior Engineer. Since 2021, Dr. Chang has been with the School of Information and Communications Engineering, Xi’an Jiaotong University, as an Associate Professor and Ph.D. Supervisor, and was promoted to Professor in 2026. He focuses on the research of advanced antenna technologies and his recent research interests include antenna integration, mobile antennas, and millimeter-wave and terahertz antennas. As of Augest 2026, Dr. Chang has published 58 SCI-indexed journal papers as the first author or corresponding author, including 35 papers in IEEE Transactions on Antennas and Propagation. He has been granted 27 invention patents. He received the Second Prize of Natural Science Award from Shaanxi Province in 2024 and the Young Scientist Award from international conferences three times in 2022-2024.