Implantable Multi-Band Antennas for Future Wireless Brain Health Devices: Review on Design Approaches and Recent Developments

Abstract

Efforts to promote patients’ quality of life through advanced healthcare technology are growingly focusing on implantable wireless biomedical telemetry systems, particularly on the development of compact, multifunctional implantable antennas. These antennas enable continuous medical monitoring and support various functions such as data transmission, wireless power transfer (WPT), and control signals across multiple frequency bands. This article reviews the challenges and recent advances in miniature multi-band antennas for brain implants, with a comparative analysis of three planar inverted-F antennas (PIFAs) designs: dual-band, triple-band, and quad-band, as case studies evaluated under the same metrics as the surveyed literature.