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[SOLVED] Polarizer axial ratio

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jesuschrist

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Hi. I'm trying to design a Ka band Tapered corrugated polarizer. I somewhat was able to keep phase difference stable but the S parameters differ alot. What i was trying to ask when I search the papers they only use the phase difference between the ports for axial ratio calculation but not the amplitude difference. Shouldn't the amplitude difference be near 0 aswell for a true circular polarization. Like this it is an RHEP LHEP not RHCP and LHCP?
ampdiff.pngphase difference.png
 

jesuschrist

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I solved it. I was comparing first mode and second mode for phase angle which ofcourse gives 90 degree difference all times.If you are holding the polarizer 45 degree angled.
 

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