Dynamic Control of a split ring resonator via pneumatic levitation

A pneumatically levitated azimuthally rotating split ring resonator system is proposed to provide dynamic tunability. A single split ring resonator is placed on a levitation platform controlled by pneumatic force. Changes in orientation of the split ring due to the continuous spinning motion relative to a second static split ring forms a broadside coupled resonator with dynamically swept resonant frequency. The speed and acceleration of the frequency sweep can be controlled by the applied pneumatic pressure and the interchangeable platform design. The contactless pneumatic levitation concept and corresponding dynamically tunable resonant frequency results are validated by both simulations and measurements.