a4 = L2*Lm*C1*C2;
a3 = Lm*C1*C2*RL;
a2 = Lm*C1;
a1 = 0;
a0 = 0;

b4 = L2*C1*C2*L1 + Lm*C1*C2*L1 + L2*Lm*C1*C2;
b3 = L2*C1*C2*R1 + L1*C1*C2*RL + Lm*C1*C2*R1 + Lm*C1*C2*RL;
b2 = L2*C2 + L1*C1 + R1*RL*C1*C2 + Lm*C2 + Lm*C1;
b1 = R1*C1 + RL*C2;
b0 = 0;
test = tf([a4 a3 a2 a1 a0],[b4 b3 b2 b1 b0]);