function mod = mod2()% mod = mod2()% Populate a structure describing the second-order modulatorA=[1 0; 1 1];B=[1 -1; 1 -2];C=[0 1];D=[0 0];ABCD=[A B; C D];mod.ABCD=[A B; C D];[mod.H mod.G] = calculateTF(mod.ABCD);