laplace/z mix transfer function

[qslazio]

i came up with a laplace/z mix transfer function like below:
X(z)/Vn(s)=((z^2-a)*K/s)/(z^3+b*z^2+c*z+d)
in which the "1/s" term functions like a integrator with the sample period

How can i analysis it in frequency domain?
Plz help
Thxs

 

[aboozar.hamidipoor]

hi:
in fact you countered with two different frequency one is Ω and another is ω.
I think you should first substitude exp(jΩ) as z and jω as s and then normalize both of them to carachteristic frequency correspond to your circuit and then analyse your problem in terms of one frequency .
I'm not sure to answer correct but hope to help you.