As wireless sensor networks are increasingly used in many critical applications in commerce, healthcare, and security, innovative design methodologies must address the architectural and energy problems at the circuit and system levels. A must for anyone serious about future wireless technologies, this book addresses the state of the art in wireless communication for 3G/4G cellular networks, mm-wave applications, wireless sensor networks, and wireless medical technologies. It explores exciting new opportunities in body area networks, medical implants, satellite communications, automobile radar detection, and wearable electronics.