Hi folks. I've started to program an 8751A in conjunction with 4380A 8-port test set. It's a nice combination, but requires off-board error correction over the HPIB. I'm familiar with the closed-form vector equations to solve for the 12-term error coefficients of a 2-port, but would like to extend this analysis to 4-port (and possibly to 8-port if I don't get completely lost in the math :?

Can someone point me to a document that shows the closed-form solutions for the 4-port error coefficients? How many are there, anyway...24?

thanks,

Calvin

Can someone point me to a document that shows the closed-form solutions for the 4-port error coefficients? How many are there, anyway...24?

thanks,

Calvin

Ferrero, A.; Pisani, U.; Kerwin, K.J., "A new implementation of a multiport automatic network analyzer" (equation 21 is wrong, but 27 is still good)

Ferrero, A.; Sampietro, F.; Pisani, U., "Multiport vector network analyzer calibration: a general formulation"

They are found in IEEE MTT Transactions.