Patent ID: 8909351

Claim:
An implantable medical device, comprising: a first tank circuit that is tuned to a first frequency and that comprises a first coil portion and a separate first capacitance electrically connected in a series combination directly with the first coil portion; a second tank circuit that is tuned to a second frequency that is different than the first frequency and the second tank circuit further comprising a second coil portion and a separate second capacitance electrically connected in a series combination directly with the second coil portion, the series combination of the second coil portion and the second capacitance being directly electrically connected to the series combination of the first coil portion and the first capacitance with a connection point between the first tank circuit and the second tank circuit establishing a first node; a receiver with at least one input that is electrically connected directly to the second coil portion or the second capacitance and not directly electrically connected to the first coil portion and the first capacitance; a battery; a rectifier electrically coupled between the battery and across at least one of the first coil portion and the first capacitance of the first tank circuit; and medical circuitry electrically coupled to the battery.