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Reconfigurable radio frequency (RF)/microwave components are needed to realize high performance multi-band/multi-mode radios. Such tunable components can potentially reduce the system complexity. However, careful attention must be given to their design in order to satisfy strict system level requirements. The objective of this work is to develop tunable technologies for high-Q preselect filters. The highly robust device design of electrostatic fringing field actuated (EFFA) microelectromechanical systems (MEMS) tuners is experimentally investigated and deployed in a tunable evanescent-mode...