Design and Simulation of RF Sensors for Biomedical Implant Communication
Keywords:
RF sensor, biomedical implant, ISM band, wireless telemetry, SAR analysis, metamaterials, tissue phantom, CST simulation.Abstract
With more people using internal biomedical devices, there must be small, reliable and safe RF sensors to ensure consistent communication with external tools. Here, I describe how a small RF sensor was designed and simulated so that it can be used for communication in biomedical implants operating in the 2.4 GHz ISM band. The proposed design includes a spiral monopole antenna and metamaterial-like elements on a substance that can be used in the human body to improve the efficiency of efficient radiation. Using a detailed human tissue phantom, the microwave designer tested the device in CST Microwave Studio, finding a return loss under -15 dB at 2.4 GHz, a radiation efficiency of 61% and SAR values that meet the IEEE standards. This study demonstrates that the proposed RF sensor is suitable for securing and transferring data in biomedical systems.
