A dual band antenna associated communication and mid-field power transmission system for biomedical implants

This paper proposes a dual-frequency miniaturized antenna for implantable medical devices. The proposed antenna has two frequency bands: the mid-field frequency band (1.4-1.6 GHz), and the industrial, scientific, and medical frequency band (ISM), respectively, for wireless power transmission (WPT) and data transmission or wireless monitoring. A compact dual-frequency transmission antenna based on optimal current distribution has been proposed as a transmitter to achieve wireless power and data transmission establishment. The simulation results show that within a distance of 50mm, the transmission coefficient can reach -27.8dB. Finally, human radiation safety has a lower specific absorption rate, indicating the potential of implants.