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How to use the 8720D for measuring Mixed Mode S parameter
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on Jul 21, 2006
on Jul 21, 2006 by Dr_joel
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Is it possible to measure the mixed mode s-parameter by 8720D?
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Jul 21, 2006 12:43 AM
Of course, if you went to enough trouble it might be possible, but No, not really.
First, mixed mode S-parameters require 4 port measurements, the 8720 has only 2 ports. There are special test sets, and a special program that can be purchased that converts the 8720 to 4 ports, but it's rather expensive.
The other choice is to measure all 4 ports (16 parameters), 4 at a time on all six paths (you will have redundant S11 - S44 measurements, of course). Take the data from these, configure it into an S4P file, then load into a simulator. In the simulator, add the proper hybrid baluns to do the mode conversions and you will get the mixed mode parameters. Shoot me an email for details on that if you're interested
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