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The accuracy of two 2-port S parameter combining one 2-port S parameter

Question asked by tesla on Jan 10, 2014
Hi, experts

Happy New Year!

I intend to measure a three port balun using E5071C. The balun have SMA connector.
My interested frequency is from 300kHz to 1GHz. The estimated balun Sds21 and Scs21 is -90dB~-75dB and -90dB~-75dB.
The pity thing is that I only have two port E5071C, i intend to measure two single-ended S parameter, the other end is terminated with SMA load of calibration kit. 
Will this method be feasible for the Sds21 and Scs21 accuracy? What will affect the measurement acurracy of this method?

Thanks and Best Regards.

Edited by: Tesla on Jan 10, 2014 3:00 AM