Enhanced optimization of the wideband excitation signal for a bioimpedance measurement

Low crest factor (CF) of the excitation signal is commonly considered as an important factor for improving the signal-to-noise ratio (SNR) of bioimpedance measurements. However, the overall SNR of impedance measurements also depends on the spectral properties of the response signal, which, in turn depends on the properties of the sample under test (SUT). This paper focuses in further optimization of wideband excitation signals, taking into account also the properties of SUT and lesser complexity of the measurement setup. The paper deals with finding the highly efficient multifrequency excitation waveforms for fast bioimpedance spectroscopy. However, the solutions described here could be useful in other implementations of impedance spectroscopy and also in frequency domain characterization of different objects.