D. Humphreys, Mohammad Rajabi, D. Schreurs, T. Nielsen
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A nonlinear verification device for nonlinear vector network analyzers
Verifying the calibration of a Nonlinear Vector Network Analyzer in a way that is not instrument specific requires a stable nonlinear device that is insensitive to port mismatch. We propose and explore the design of a nonlinear verification device to complement existing linear verification devices. We have evaluated a design operating at a fundamental frequency of 2 GHz and derived an improved figure of merit parameter that identifies sensitivity to load-pull.
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