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Ports for a scattering matrix have well defined incident and reflected waves (think coax cable, waveguide, or an idealised circuit theory port of two wires), there is no single wave that you can use to represent free space. Just because free space has an 'impedance' doesn't mean that it is a suitable port for a scattering matrix. What you are trying to do is somewhat misguided. What would be a meaningful way to represent S12 and S22?
#QUCS TOUCHSTONE IMPORT HOW TO#
S22: I'm not sure how to consider the reflection of inbound signal bouncing off the antenna back into the air.is an antenna considered a passive network?.S12: The effect of the air (port2) on the feedpoint (port1):.
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S21: antenna gain in the direction we care about.The first two S-parameters make sense to me: (This is a STEM project with my son.)Ĭertainly the CSV has enough information to provide a 1-port network with return loss alone (.s1p), but could it make sense to model a 2-port network (.s2p) from the CSV data? s2p) and import it into my favorite RF software as a circuit component to see the whole signal behavior for an amplifier we are modeling including final output through the antenna. I was thinking it would be neat to convert the CSV to a 1- or 2-port touchstone format (.s1p or. I've been using xnec2c to model antenna characteristics in Linux and the latest version is able to create a CSV by frequency of SWR, Zr/Zi, dB gain, and other metrics.