A New Robust Method for Six-Port Reflectometer Calibration

Frank Wiedmann (1) , Bernard Huyart (1) , Eric Bergeault (1) , Louis Jallet (1)

1 ENST - Ecole Nationale Supérieure des Télécommunications

A new robust method for finding the parameters of Engen's six-port-to-four-port reduction algorithm for six-port reflectometer calibration has been developed. Like other previously published methods, it uses a minimum of five loads with an unknown but constant absolute value of the reflection coefficient and unknown but well-distributed phases. However, the quality of the parameter estimates is improved, especially in noisy environments, by efficiently eliminating cases in which these earlier methods may become ill-conditioned. The new method has been used successfully to calibrate a newly developed six-port reflectometer in GaAs MMIC technology working between 1.3 GHz and 3.0 GHz.

Mots clés: calibration procedure; network analysis; reflection coefficient measurement; six-port reflectometer; S-parameter measurement

Domaines: Electronique

Frank Wiedmann, Bernard Huyart, Eric Bergeault, Louis Jallet. A New Robust Method for Six-Port Reflectometer Calibration. IEEE Transactions on Instrumentation and Measurement, 1999, 48 (5), pp.927-931. ⟨10.1109/19.799649⟩. ⟨hal-00351726⟩