Tunable Dielectric Resonator Antennas Using Voltage-Controlled Mechanical Deformation
We present a new concept for compact, tunable antennas. Traditional approaches have circuits and switchable elements which can be bulky and lossy. Here we investigate structures which offer direct tuning through voltage-controlled deformation of the radiating structure itself. The antenna is a dielectric resonator (DRA), where the antenna impedance and tuning depends on the shape of the dielectric. The deformation action is through using electro-active polymer (EAP) for the dielectric. EAPs have promising properties for smart antennas and ongoing developments are continuing to improve its suitability.
Pietro VINCENZINI and Fabio CASCIATI
A. Mahanfar et al., "Tunable Dielectric Resonator Antennas Using Voltage-Controlled Mechanical Deformation", Advances in Science and Technology, Vol. 56, pp. 614-619, 2008