volume | PIER Journals

Abstract

The effect of measurement errors in the S-matrix of a reciprocal 2-port device is recognized in the (usually low) difference between S₁₂ and S₂₁, as the device were nonreciprocal. This ``false non-reciprocity'' is analyzed in the present paper, and it is verified that, for low loss device, the difference acts principally on the phases of S₁₂ and S₂₁. This anomaly can be removed if a numerical correction is applied to the experimental S-matrix. In doing so, it is proved that the residual measurement errors have comparable amplitudes on all scattering parameters.

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Dr. Leonardo Zappelli