He is a senior lecturer and researcher in electrical and computer engineering at several colleges. From 1976 to 2008 he worked at RAFAEL as a senior researcher, group leader, and project leader. From 2007 to 2021 he worked as an RF specialist project leader at Hitech companies and a senior lecturer and researcher at various colleges. He has published more than 100 research papers and holds patents in the United States. He has written and edited nine books on compact wearable systems and green technologies. He has also written books on electromagnetics and wideband microwave technologies and six chapters on wearable printed systems and green technologies.
PrefaceWireless communication systems demand higher data rates, enhanced quality of service, and more channel capacity. These features can be achieved by using Ultra Wideband technologies (UWB), which have attracted considerable attention in the last decade. The inherent features of UWB technologies are a high data rate, more channel capacity, extremely less power consumption, and low cost. Compact wideband RF modules and antennas are crucial in developing UWB direction-finding systems, radars, seekers, and communication systems. UWB systems suffer from losses due to multipath fading and frequency interference. Input Multiple Output (MIMO) technology can solve multipath interference and losses to improve the dynamic range and channel quality of the communication system. This book discusses innovation in UWB technologies and systems. Each chapter presents important information to enable engineers, students, and scientists from all areas to follow and understand the topics presented in the book. The book is divided into four sections that present the main topics of green technologies. 1. "Introduction to Ultra-Wideband Technologies" 2. "Ultra-Wideband Systems and RF Modules" 3. "Applications of Ultra-Wideband Technologies" 4. "Ultra-Wideband Antennas and Devices"Chapters in these sections examine such topics as UWB MIMO antennas and UWB RF modules and systems. Minimization of the size, cost, and weight of UWB RF modules and antennas is achieved by employing MMIC, MIC, and MEMS technologies. However, the integration of MMIC, MIC, and MEMS components and modules raises technical challenges in efficiency, accuracy, and tight tolerances. Accurate design of microwave modules and antennas is a must in the development of UWB systems, as it is impossible to tune microwave devices in the production line. The book also includes chapters on UWB technologies for medical and sports applications and time-domain performance evaluation of UWB antennas.I want to thank all the chapter authors for their excellent contributions.