The application of implantable biomedical devices for continuous monitoring of vital signs became essential in early detection of body’s dysfunctions or diseases. This scenario therefore enables the use of these devices embedded in the system of myoelectric prostheses (for the implementation of a neuromorphic tactile feedback control, for example), but the need to recharge the devices is one of the main challenges for improving performance and miniaturization. An alternative is the use of an Energy Harvesting system by Radio frequency, to convert RF waves into DC energy. Thus, this work addresses the development of a Power Management Circuit for Implantable Biomedical Devices, pursuing the collection of physiological signals and, in the future, to implement it for the control of myoelectric prostheses. In this study, experiments were carried out to evaluate the power received in relation to the distance of the RF transmitter, the energy charging and discharging time, and consumption in different loads.