Low Frequency Issues with CST MWS

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kowal_edward

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All,

I am simulating a simple microstrip trace in CST. I am using discrete ports and PML (open + add space) boundary conditions. I notice that S12 does not quite reach 0dB at DC, even with PEC models for the conductors and no dielectric loss.

Is there something I should be doing to get S21 -> 0dB?

Thanks
Ed
 


Do you have Line Impedance Adaptation turned on? Do you have Inhomogenous Port Correction turned on? Both are in the solver settings... forgot the exact names...
 

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