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Systematic Errors in Noise Parameter Determination Due to Imperfect Source Impedance Measurement

Published

Author(s)

Wojciech Wiatr, Dave K. Walker

Abstract

We present a rigorous analysis of systematic errors int he four-noise parameter determination of a two-port network using the cold-source technique. The method is based on an original model that accounts fro imperfectly measured source reflection coefficients due to residual errors within a vector network analyzer (VNA). We show that even small VNA errors may seriously deteriorate the accuracy of the noise parameters when characterizing low-noise PHEMTs.
Proceedings Title
Proc., Conf. Prec. Electromagn. Meas.
Conference Dates
June 27-July 2, 2004
Conference Location
Teddington, 1, UK
Conference Title
CPEM - CONFERENCE ON PRECISION ELECTROMAGNETIC MEASUREMENTS

Keywords

noise parameters, PHEMT, vector network analyzer

Citation

Wiatr, W. and Walker, D. (2004), Systematic Errors in Noise Parameter Determination Due to Imperfect Source Impedance Measurement, Proc., Conf. Prec. Electromagn. Meas., Teddington, 1, UK (Accessed June 24, 2024)

Issues

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Created June 30, 2004, Updated October 12, 2021