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Removing insertion losses with Infiniisim

Question asked by conchiupct on Mar 29, 2011
Latest reply on Mar 31, 2011 by algoss

I'm using my scope 90404A to measure a pass band signal. The information is in the band 4.9-5.1 GHz. In fact, after the acqusition, I perfom a bass band filter in Matlab to remove all the information in other frequencies.

I'd like to use Infiniisim to remove the effect of an amplifier in mi acquired signal. However, I don't know if I should obtain the s2p parameter in all the bandwidth available in my ENA (in this case from 300 kHz up to 8.5 GHz) or I should obtain the s2p parameter in my band of interest 4.9-5.1 GHz.

Which would be the difference in using infiniisim in all the bandwidth of the scope (8 GHz) or in a selected narrower bandwidth? Would we commit any error in using only a passband correction?

Thank you in advance.