ABOUT THIS BOOKAntennas have evolved beyond telecommunications to support sensing, wireless power transfer, and energy-harvesting electronic systems. As wireless technologies move toward intelligent and interconnected infrastructures, electromagnetic and radio-frequency sensing are becoming essential components of next-generation healthcare monitoring and smart environments, as well as industrial inspection and autonomous systems. To fully leverage these opportunities, such systems require interdisciplinary expertise ranging from fundamental antennas and propagation research to active antennas and applied radio-frequency technologies, as well as circuits and systems, advanced materials, and AI and machine learning.