Simulating Microstrip array in IE3D using periodic boundary
时间：03-27
整理：3721RD
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I'm trying to simulate microstrip array in IE3D using periodic boundary.
The simulation for single element pass OK but when I insert the periodic boundary the simulation gives me negative values for the real part of the input impedance and positive values for S11 in [dB].
I should add that the array I'm simulating has thick substrate so there is large coupling between the elements (about -15[dB] for S12).
Is there a limit on the coupling between cells so the solution of the array using periodic boundary condition can not converge? anyone familliar with this type of problem?
Thank you.
The simulation for single element pass OK but when I insert the periodic boundary the simulation gives me negative values for the real part of the input impedance and positive values for S11 in [dB].
I should add that the array I'm simulating has thick substrate so there is large coupling between the elements (about -15[dB] for S12).
Is there a limit on the coupling between cells so the solution of the array using periodic boundary condition can not converge? anyone familliar with this type of problem?
Thank you.