[Moved]: S11 to s41 plots for hybrid coupler

GOOD DAY ALL,
CAN SOME ONE PLEASE HELP ME ON HOW TO PLOT THE THEORETICAL GRAPH OF S11 = return loss, S21 = through port, S31 = coupled port, S41 = isolation port FOR A HYBRID COUPLER?
MANY THANKS

hi,
what software you are using?

good day sir,
i am using cst and ads for the coupler simulation. likewise, i use matlab for some computations and other plots.