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Measuring in-band distortions of mixers

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3 Author(s)
Geens, A. ; Assoc. Vincotte Nucl., Brussels, Belgium ; Van Moer, W. ; Rolain, Y.

This paper proposes a method to measure the in-band deterministic and stochastic contributions of nonlinear distortions in mixers. The model of the mixer as a two- or three-port device is developed. Based on this model, the measurement technique-which is a generalization of the methods developed for amplifiers-is developed. While designing the measurement method, the difficulties that arise out of the fundamental differences between mixers (three-port devices) and amplifiers (two-port devices) are taken into account. Two techniques are presented, depending on the fact that the phase of the local oscillator is known or unknown.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:52 ,  Issue: 4 )