Wearable Sensor for Communication with Implantable Devices

This study presents a simulation and measurement test-bench to investigate the antenna detuning, impedance mismatch and losses in through-body communications. These parameters are relevant to the efficient design of wearable and implantable antennas for biomedical sensors. The study was carried out using finite-difference-time-domain electromagnetic simulations using realistic high-resolution numerical human body phantom models. S-parameter measurement corresponding to the simulation setup was carried out when an implantable antenna connected to a Vector Network Analyzer was placed in the armpit of a human subject and communication was established with an external wearable antenna. The measured results verified the reliability of the proposed simulation test-bench for biomedical sensor applications. 1 4