Analysis, modeling and design of a CMOS Super-Regenerative Receiver for implanted medical devices under square and sinusoidal quench signals

Medical implant devices have found widespread application in recent years. The Super-Regenerative Receiver has been one preferred architecture due to its power advantage over other architectures. We present a detailed analysis of the circuits and their equivalent models to be used in system level design of a Super-Regenerative Receiver in this paper. The design procedure is also demonstrated with a receiver design example. Designs were carried out in UMC 180 nm process with a center frequency of 416 MHz for MedRadio band. Errors between the simulation results of the proposed model and actual circuits are less than 1.6% for LNA characteristics and 7% for receiver output amplitude. 10 Mbps data rate was achieved with 432 pJ/bit energy consumption over 1.8 V power supply. The study is concluded with the simulation results of the circuits and the equivalent models.