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A n-state time-domain measurement test-bench for characterization of intermodulation distortion on device level

Ein n-Zustands-Zeitbereichsmess-System zur Charakterisierung von Intermodulationsverzerrungen auf Bauelementeebene
: Merkle, T.; Ramberger, S.; Kuri, M.; Raay, F. van


Thal, H. ; IEEE Microwave Theory and Techniques Society:
IEEE MTT-S International Microwave Symposium digest 2003. Vol.3 : June 8 - 13, 2003, Pennsylvania Convention Center, Philadelphia, Pennsylvania
Piscataway, NJ: IEEE, 2003
ISBN: 0-7803-7695-1
ISBN: 0-7803-7696-X
International Microwave Symposium (IMS) <2003, Philadelphia/Pa.>
Conference Paper
Fraunhofer IAF ()
large-signal measurement system; Großsignal-Meßsystem; dynamic range; Dynamikbereich; nonlinear; nichtlinear; intermodulation distortion; Intermodulationsverzerrung; calibration; Kalibration; error models; Fehlermodell; load-pull; microwave transition analyzer

A flexible nonlinear measurement system is presented for the investigation of intermodulation distortion (IMD) on device level at Ka-band frequencies. The setup is unique in the way that a passive load-pull tuner embedded inside a full two-port test-set is combined with a hybrid receiver to one fully automated test system. The calibration problem of the resulting n-state test-set is formulated with a generalized 4-port error model, for the first time. The hybrid receiver is composed of a virtual 4 channel time-domain sampling oscilloscope and a spectrum analyzer. As an application, we show various two-tone sweep-scenarios applied to our GaAs HEMTs targeting high power applications at Ka-band frequencies.