dispersion diagram and S11 estimation for corrugated rectangular waveguide using hfss

hello

i have the following designs for corrugated rectangular waveguides which suppose to work as filter, and i need to plot the S11, the problem is the corrugation of the waveguide is controlled by a parameter delta, and when the value of this parameter s below 0.06 the filter response act in a wrong way, i have been told to estimate the dispersion diagram and get the result for several values of delta below and above 0.06. is there any one can help an the procedure to getthe dispersion diagram and a solution to the problem.modified_proposal.rarmodified_proposal - Copy.rarEigen_Mode_Part_1_MTM.rar

Your dispersion simulation "Eigen_Mode_Part_1_MTM" seems mostly correct, but what is the point of the transverse master/slave boundaries? The "modied_proposal - Copy" seems correct. As far as I can tell, your modified_proposal setup is also fine. What is the exact issue you're having?