A Novel Method to Determine the Bio-Impedance

In this paper, we designed a circuit to determine the amplitude and phase of biological impediments. The circuit is simulated by the Proteus software and the amplitude and phase values are compared with the theoretical values. The theoretical value is calculated according to the Fricke model and Cole-Cole model at a frequency ranging from 10Khz to 1Mhz. The results of theoretical calculation are used to evaluate the accuracy of the designed circuit. The maximum error between simulation value and theoretical value is about 1.5 % with Fricke model and about 1 % with Cole-Cole model.