ueckid
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Hi all,
I need helps on how to set reference impedance in a co-simulation between circuit/EM simulation (ADS/CST). I have a complex circuit including conventional lumped components such as inductor, capacitor, transmission lines, etc. and a complex EM structure (in CST) which cannot be easily treated as an equivalent circuit.
My purpose is to run this circuit in ADS using Harmonic Balance simulation. My idea to run this circuit is first extracting S-parameters of the EM structure using CST, then inserting this S-parameter data into ADS. This is what we call co-simulation.
The problem is because the extracted S-parameter depends on port impedance (or reference impedance), how I can set correct port impedance in CST to obtain a correct result of the co-simulation in ADS? In think the port impedance can not be set to 50 Ohm because in real circuit the EM model is placed between non-50 Ohm components. This issue has really made me a big trouble so far.
I think this question is similar to how we can use S-parameter model of lumped components in Harmonic balance simulation.
I would highly appreciate if someone could help!
Thanks for your consideration.
Kind regards,
I need helps on how to set reference impedance in a co-simulation between circuit/EM simulation (ADS/CST). I have a complex circuit including conventional lumped components such as inductor, capacitor, transmission lines, etc. and a complex EM structure (in CST) which cannot be easily treated as an equivalent circuit.
My purpose is to run this circuit in ADS using Harmonic Balance simulation. My idea to run this circuit is first extracting S-parameters of the EM structure using CST, then inserting this S-parameter data into ADS. This is what we call co-simulation.
The problem is because the extracted S-parameter depends on port impedance (or reference impedance), how I can set correct port impedance in CST to obtain a correct result of the co-simulation in ADS? In think the port impedance can not be set to 50 Ohm because in real circuit the EM model is placed between non-50 Ohm components. This issue has really made me a big trouble so far.
I think this question is similar to how we can use S-parameter model of lumped components in Harmonic balance simulation.
I would highly appreciate if someone could help!
Thanks for your consideration.
Kind regards,