Trying to stimulate a RF transmission line chebyshev filter with given impedances

I am trying to stimulate a given 3rd order chebyyshev filter on microwave transmission lines, with given impeadances of 3.34874, 0.71170, 3.34874

This is my code:

This is the stimulation result:

The LTSpice Stimulation result for same circuit:

I wonder why my Matlab stimulation have no Chebyshev ripple and different attenuation?