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A semi-dynamic heart model for UWB microwave transmission simulations and hardware evaluation

In this paper, we present a simplified semi-dynamic heart model for investigation of microwave transmission heart monitoring systems between 1.5 and 4 GHz in both simulation and measurement. We aim to validate that our proposed heart model is able to represent the heart structure at microwave frequencies by comparing our model to an accurate numerical heart model (anHM) from the ITIS foundation virtual population. Our simple numerical heart model (snHM) (simulation) and physical heart model (pHM) (measurement) are evaluated in a simplified human chest model using an UWB biomedical sensor. In simulation, the transmission parameter shows agreement with the time domain peak of −94.5 dB for the snHM and −96.4 dB in the anHM. The anHM and pHM transmission signal characteristics were then compared showing good agreement. Our heart model is able to represent the heart between 1.5 and 4.0 GHz and represents a step toward a real time dynamic heart model for hardware evaluation.