Patent ID: 6502046
Filing Date: 2002-12-31
Classification: G01R

Abstract:
A method of the carrier function Laplace transform impedance measurement, comprising the steps of:(1) detecting a response signal of an object whose impedance will be measured; (2) obtaining parameters of a carrier function by linearly or non-linearly fitting the response signal in step (1) to the carrier function allowing an analytical Laplace transform; (3) calculating an impedance function in the Laplace domain by using an analytic relation between the carrier function in time domain and its Laplace transfer function using parameters of the carrier function obtained from the fitting results in step (2); (4) calculating the impedance spectrum in a frequency domain by using the parameters of the Laplace domain impedance function calculated in step (3), and calculating the measurement error of the frequency band impedance function out of the standard deviations of the parameters and its correlation; and (5) displaying the frequency domain impedance spectrum calculated in step (4) and storing the result.