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April 24th 07, 03:18 AM
posted to rec.radio.amateur.antenna
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Lurker with S-parameter question
Let's say that I have a set of S parameter data in the form rho+angle. The
parameters are S11(ant) for an antenna, S11(cable) and S21(cable) are for the cable. S12(cable) and S21(cable) are assumed equal. S11(system) is for the antenna and cable connected together. How would the S11(system) be calculated? As a first stab at it, I would calculate: S11(system)=S11(ant) * S21(cable) * S12(cable) Is that valid, and/or does S11(cable) need to be included? Thanks |
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