Extraction of S-parameters
Hi pal,
I have a unique method that requires the knowledge of interpolation and from the poles derive the required R, L, C equivalent circuit.
From the four set of S-parameters (both real and imaginary), equate them to four set of cauchy interpolation rational function. By moving the denominator over to the know S-parameters and grouping the equations into AX=b, these unknown can be solved by total least square method. Note for the existence of b column matrix, the a0 of the denominator should be set to 1.
After finding the cauchy coefficients for both the numerator and denominator, perform a S to Y transformation and then, factorize both the numerator and denominator into their roots. From the concept of poles and zeros, one can deduce the required optimal equivalent from the concept of Y-parameters.
Hope this will give you some thought.
:wink: :wink: :wink: :wink: :wink: