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Port Impedance + Impedance Matrix

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I am trying to find out the impedance matrix of a 2-Port-RF Device through a numerical simulation in Comsol. For this I had defined a 50 Ohm Port on each side.

Since the simulation did not match the measuerements (wrong Z, wrong resonance f, wrong Q), I tried a simmulation with one port generating the signal, and a PEC (Short) insteda of a second port. This way, the results matched the measurement quite well.

My question would be: when you calculate the impedance of the device using emw2.Zport_1, what is the configuration of the oposite port? Does it keep the 50 ohm set to the other port? Or is the impedance calculated indirectly using the S parameters?

Best regards and thank you in advance, Daniel

0 Replies Last Post 6 Dec 2019, 04:25 GMT-5
COMSOL Moderator

Hello Daniel Gil Gaviria

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