An Overview of the Rectenna System to Power Implantable Biomedical Devices

Several important and prominent applications involving wireless power transfer (WPT) are suitable solutions for powering advanced electronic devices, such as those used in biomedical implants. The Rectenna system is one ofWPT method based on radiative energy harvesting. This article provides an overview of the design and realization of recent implantable Rectenna systems. Due to the conditions and requirements to implant it inside the human tissue, the design and implementation of this system is a challenge for many researchers. The compact size, safety considerations, frequencies, and power efficiency are key parameters and the means to achieve a compact implantable Rectenna.