Tunable Microwave Devices Based on the Design Reconfiguration by Piezoelectric Actuator

Highly tunable low loss microwave devices are elaborated by electromechanical alteration in the configuration of device parts. Generally, such a device consists of dielectric and metallic parts with an air gap between them. Gap is located by the way that provides the largest perturbation in electromagnetic field. Energy distribution within the devices is controlled by the fast actuator and can be described as a change in effective permittivity (epsiv _eff ). Mini-actuator is used for device control through the change of epsiv _eff High tunable dielectric resonators and filters as well as wide-band low-loss phase shifters are realized experimentally.