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a Question about Phase

Question asked by rf_like on Nov 4, 2013
Latest reply on Nov 8, 2013 by Dr_joel
Hi all,

I did a free space measurement (Transmission) between 5 and 6 GHz. I get the Phase from VNA (Figure) . It seems to me that the Group time is negative (the Slope of the unwrapped phase is positive). Is something wrong with this measurement ? I repeated the calibration and measurement, i got the same result!

Thank you  

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