Hi,

I am measuring a 4 port balanced device in a bal-bal topology (logical port1=1,2 & logical port2=3,4) with a large number of data points(>>>1601) and a IFBW of 100 Hz. I would like to get the sdd11,sdd22,sdd12,sdd21,scd11,scd22,scd12,cd21,sdc11,sdc22,sdc12,sdc21,scc11,scc22,scc12,scc21measurements. Due to the large number of data points, I am restricted to a maximum of 1 channel and 4 traces. I could perform 4 different sweeps to get all 16 mixed mode s-parameters, but that requires a lot of time due to the low IFBW and number of points (both of which I am unwilling to change for accuracy reasons). Can I export the s4p file and then calculate all of the mixed mode s-parameters? If so, where can I find the equations for this? I found four of them in the Agilent FAQ here http://www.home.agilent.com/upload/cmc_upload/All/MixedMode_2port.pdf. Is there an application note somewhere that addresses this?

Thanks in advance for you help

I am measuring a 4 port balanced device in a bal-bal topology (logical port1=1,2 & logical port2=3,4) with a large number of data points(>>>1601) and a IFBW of 100 Hz. I would like to get the sdd11,sdd22,sdd12,sdd21,scd11,scd22,scd12,cd21,sdc11,sdc22,sdc12,sdc21,scc11,scc22,scc12,scc21measurements. Due to the large number of data points, I am restricted to a maximum of 1 channel and 4 traces. I could perform 4 different sweeps to get all 16 mixed mode s-parameters, but that requires a lot of time due to the low IFBW and number of points (both of which I am unwilling to change for accuracy reasons). Can I export the s4p file and then calculate all of the mixed mode s-parameters? If so, where can I find the equations for this? I found four of them in the Agilent FAQ here http://www.home.agilent.com/upload/cmc_upload/All/MixedMode_2port.pdf. Is there an application note somewhere that addresses this?

Thanks in advance for you help

In the past I have pointed people to this paper:

http://www.simtech.a-star.edu.sg/Resear ... 04JT03.pdf

eq 12 shows the equations you need