Time-invariant measurement of time-varying bioimpedance using vector impedance analysis Vrije Universiteit Brussel KU Leuven University of Antwerp
When stepped-sine impedance spectroscopy measurements are carried out on periodically) time-varying bio-systems, the inherent time-variant (time-periodic parts are traditionally ignored or mitigated by filtering. The latter, however, lacks theoretical foundation and, in this paper, it is shown that it only works under certain specific conditions. Besides, we propose an alternative method, based on multisine signals, that exploits the ...