Determine Modeling Frequencies

When you simulate an RF model, the Output Port block uses Input Port block parameters to determine the modeling frequencies f for the physical system that is bracketed between the Input Port block and the Output Port block. f is an N-element vector, where N is the finite impulse response filter length. The modeling frequencies are a function of the center frequency f_c and the sample time t_s. The following figure shows the Input Port block parameters that determine the modeling frequencies.

f_n is the nth element of the vector of modeling frequencies, f, and is given by

$$\begin{array}{cc}{f}_n=f_{\min }+\frac{n-1}{t_{s}N}& n=1,\mathrm{...},N\end{array}$$

where

$$f_{\min }=f_c-\frac{1}{2t_s}$$