Balun FT114-43 11T CMRR


Balanced Common Mode Fixture


Fixture Schematic


VNWA S21 CMRR and S11 VSWR




Balun FT114-43 11T CMRR Balanced Condition


Balanced Common Mode Fixture with 10:1 Trnasformer



Through Calibration Schematic



Measure Schematic



VNWA Window



SimSmith Window

  • Files: FT114-43-11T.s2p FT114-43-11T-CMF.s2p
  • SimSmith traces
    • LG1 Violet = Inductor Measurement S21 dB
    • L Red = Balun Balanced Common Mode S21 dB
    • S1 Light Blue = Balun Balanced S11 VSWR




Balun FT114-43 11T CMRR Un-Balanced Condition


Un-Balanced Common Mode Fixture with 10:1 Transformer



Measure Schematic

File: FT114-43-11T-CMF-UB.s2p



VNWA Window




Balun FT114-43 11T Inductor Measurement


VNWA S21 50Ω to 50Ω Inductor CMRR dB



SimSmith Model Evaluation

  • Export VNWA s2p file to SimSmith S Blocks
  • Fair-Rite File
    Download "Click here to download Complex Permeability vs. Frequency (CSV)"
    Replace five header lines with single line "Generic 1 1 2 3"
  • L Red Trace = Measured CMRR dB
  • LG1 Voilet Trace = Modeled CMRR dB
  • S1.p Blue Trace = 43 material core heating in watts
  • A.p Violet Trace = 43 material model core heating in watts



SimSmith Evaluate |Z|



SimSmith CMRR RUSE Block