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What equipment would be needed to determine an N load has a return loss >= 42 dB?

Question asked by drkirkby on Dec 19, 2018
Latest reply on May 11, 2019 by drkirkby

I was having a discusssion with one of my lecturers from university. He is looking for loads with a return loss of at least 42 dB to 3.4 GHz. What (if any) Keysight equipment could be used to measure a load and verify the return loss is at least 42 dB?


Yes, I expect Keysight sell loads of that specification, but how would an end-user verify a load they have meets that specification? I can stick a load on my 8720D with 85054B cal kit and it indicate a return loss of 70 dB, but I can't trust that. 


Is there some way with a load on the end of a precision airline? I'm guesing that would be the only realistic way, as I don't believe even a PNA-X with 85054B will manage that, but perhaps someone will correct me.