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RF and IF mixer optimum matching impedances extracted by large-signal vectorial measurements

Published

Author(s)

Alessandro Cidronali, Giovanni Loglio, Jeffrey A. Jargon, Catherine A. Remley, I. Magrini, Donald C. DeGroot, Dominique Schreurs, Kuldip Gupta, Gianfranco Manes

Abstract

This paper introduces a new technique that allows us to measure the admittance conversion matrix of a two-port device, using a Nonlinear Vector Network Analyzer. This method is applied to extract the conversion matrix of a 0.2 micron pHEMT, driven by a 4.8 GHz pump signal, at different power levels, using an intermediate frequency of 600 MHz. The issue on data inconsistency due to phase randomization among different measurements is discussed and a proper pre-processing algorithm is proposed to fix the problem. The output of this work consists of a comprehensive experimental evaluation of up- and down-conversion maximum gain, stability, and optimal RF and IF impedances.
Conference Dates
October 6-7, 2003
Conference Location
Munich, -1
Conference Title
European Microwave Week 2003, 11th Gallium Arsenide Application Symposium

Keywords

Admittance, conversion matrix, extract, impedance, maximum gain, measure, network analyzer, nonlinear
Created October 7, 2003, Updated February 19, 2017