Pure-mode network analyzer for on-wafer measurements of mixed-mode S-parameters of differential circuits

D.E. Bockelman, W.R. Eisenstadt
1997 IEEE transactions on microwave theory and techniques  
A practical measurement system is introduced for measurement of combined differential and common-mode (mixed-mode) scattering parameters, and its operation is discussed. A pure-mode system measures network parameters of a differential circuit in the fundamental modes of operation, and has improved accuracy over a traditional network analyzer for the measurement of such circuits. The system is suitable for onwafer measurements of differential circuits. The transformation between standard s s
more » ... en standard s s s-parameters and mixed-mode s s s-parameters is developed. Example microwave differential structures are measured with the pure-mode vector-network analyzer (PMVNA), and the corrected data is presented. These structures are simulated, and the simulated mixed-mode s s s-parameters correlate well with the measured data.
doi:10.1109/22.598443 fatcat:64f4gi5cdvdlvm55hnhwrolnsy