Systems and methods for a resonator with an adjustable capacitance for a medical device. In one embodiment, a resonator system includes a resonator device with an LC resonator circuit that has an adjustable capacitance, an inductor coil in series with the adjustable capacitance, and an adjustable capacitance...http://www.google.de/patents/US8046048?utm_source=gb-gplus-sharePatent US8046048 - Resonator with adjustable capacitance for medical device