Experimental Characterization of a 434 MHZ Wireless Energy Link for Medical Applications

Abstract

Abstract-This paper presents an experimental study of the performance of a wireless resonant energy link for implantable biomedical devices. More specifically, the proposed system consists of two planar resonators: a primary resonator that is connected to a power source and operates outside the body, and a secondary resonator that is connected to the implanted device and operates inside the body. Each resonator is a planar spiral resonator; the wireless power transmission is obtained by exploiting the magnetic coupling between the two resonators when they are operating at small distances. A prototype working in the ISM band centered at 434 MHz has been developed and analyzed. Reported results confirm that the proposed system is a viable solution for wirelessly providing implantable devices with the power necessary for operation.

Modelling of wireless power transfer links based on capacitive coupling

“…The first practical demonstration of wireless power transmission (WPT) dates back to 1891 and was an experiment of Tesla exploiting a capacitive coupling. In recent years, WPT technology has gained a renewed interest; in particular, significative attention has been dedicated to systems of inductively coupled resonators [1][2][3][4][5][6][7][8][9][10], to cite just a few, for the realization of mid range WPT.…”

Wireless resonant energy link for pulse generators implanted in the chest

“…Minced pork was used in order to mimic the presence of human tissues. In fact, in the MedRadio band, minced pork provides a good approximation for the characterisation of wireless devices implanted in the chest [13,27].…”

Europe and the Future for WPT : European Contributions to Wireless Power Transfer Technology

“…The use of a wireless resonant energy link for energizing modern IMDs has been suggested in [58]- [61]. In more detail, a WPT link for powering pacemakers has been presented in [59].…”