Plots comparison of S-parameter objects given in the list S_array.
Titles must be given for each plot in the list
input:
freq_vec: [1,num_pts] frequency vector(s) in MHz.
S_array: {num_params} cell array of 2-port S-parameters [2,2,num_pts]
title_array: {num_params} cell array of titles for the S-parameter
plots