<div> Wireless sensing and communication is showing an explosive growth in consumer and military applications of radio frequency (RF) circuits and systems. The demand for mobile systems necessitates the use of highly integrated technology featuring small size, low weight, high performance and low cost: Micro Electro Mechanical Systems (MEMS) can meet this need. The contributions in part one cover RF MEMS as an enabling technology for wireless applications and includes chapters on passive components, phase shifters and antennas. Chapters review RF MEMS technology and applications as a whole before moving on to describe specific technologies for wireless applications including passive components, phase shifters and antennas. Part two discusses wireless techniques and applications of wireless MEMS, including biomedical applications, such as implantable MEMS and wireless drug delivery, RF MEMS for automotive radar and optical MEMS displays in portable electronics.</div>