Why does RationalFunc = rationalfit(Freq,TrFunc) have only poles, but none zeros

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ruwan2

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Hi,

I am more familiar with digital domain than analog domain. Now I am using Matlab RF toolbox. I find that the example on transmission line is modeled as rational. It is weird that there are only poles in these rational terms, but no zeros in the Laplace formula. Why does it no zeros?




RationalFunc =

rfmodel.rational with properties:

A: [7x1 double] (A: poles)
C: [7x1 double] (C: on numerator)
D: 0
Delay: 0
Name: 'Rational Function'


Could you explain it to me?

Thanks,
 

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