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Multiport S-Parameters Calculation
Posted Nov 9, 2017, 2:08 a.m. EST RF & Microwave Engineering, Wave Optics, General Version 5.3 2 Replies
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Dear All,
I hope that this topic finds you well.
I built a 3-port structure and i am facing a problem in calculating the S-Parameters as follows:
1) when the excitation on port 3 is off, i can calculate S21 and the ports section in the results is visible and available.
2) when the excitation on port 3 is on, the (ports) section in the result disappear and i cant calculate the s21 parameters neither any of the s-parameters.
i wish your urgent help and thank you in advance. i am looking forward to hearing from you. yours,
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You can excite the ports one at a time, and compute Sij in multiple runs. There is also a multi-port (S matrix) computation option -- look for it. If you prefer to excite more than one port at once to observe the RF behavior under those conditions, you can also measure powers input or output at each port and extract quantities that may be of interest to you. But if you have a linear system, then there is generally no need to actively excite more than one port at a time, since you can establish the S parameters of the system with multiple, separate, single-port excitations.
-------------------Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
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Dear robert, I hope that this message finds you well. Thank you for your reply. I managed to activate the port sweep. It is really very useful tool. reply