This book outlines the intrinsic potential of RF-MEMS technology with specific focus on 5G mobile communications and services. Commencing with a review of the characteristics of RF-MEMS in relation to the specifications of interest for 5G, the book proceeds to develop practical insight concerning the design and development of RF-MEMS including case studies of design concepts. Including multiphysics simulation and animations, the book will be essential reading for both academic and industrial researchers and engineers.