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Error-corrected large-signal waveform measurement system combining network analyzer and sampling oscilloscope capabilities

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2 Author(s)
Kompa, G. ; Dept. of High-Frequency Eng., Kassel Univ., West Germany ; van Raay, F.

A large-signal automatic stepped CW waveform measurement system for nonlinear device characterization is presented that combines the high accuracy of a vector network analyzer with the waveform measurement capabilities of a sampling oscilloscope. A large-signal error model and a corresponding coaxial calibration procedure are proposed to describe the systematic errors of the measurement setup. The error parameters and the correction algorithm are independent of the properties of the RF generator. System accuracy is investigated by Schottky diode verification measurements with different offsets from the reference plane. GaAs MESFET reflection and transmission response measurements with error correction extended to the planar device under test (DUT) reference planes are given

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:38 ,  Issue: 4 )