Textbook in PDF format The book presents the modern design and analysis principles of mm-Wave devices and communication systems for wireless devices and showcases design insights, and challenges when integrating mm-Wave devices and communication systems. Presents analytical and numerical approaches regarding mm-Wave devices for 5G communication. Discusses modern design and analysis principles of other mm-Wave devices like filters and rectifiers for communication systems. Explains intelligent signal processing algorithms for intelligent B5G (6G) networks for sensing and communications. Covers big data and artificial intelligence for advanced network optimization in 5G communication and beyond. Showcases machine learning-driven metamaterial-inspired wearable antennas for biomedical applications. The text is primarily written for senior undergraduate, graduate students, and academic researchers in the fields of electrical engineering, electronics and communication engineering, and computer engineering