A comparative study on the precision of various six-port correlators

Author

Ghannouchi, Fadhel M. ; Bosisio, Renato G.

Author_Institution

Dept. de Genie Electr., Ecole Polytech. de Montreal, Que., Canada

fYear

1988

fDate

20-22 Apr 1988

Firstpage

256

Lastpage

259

Abstract

A detailed analysis of the accuracy of complex reflection coefficient (Γ) measurements using the six-port technique is presented. The expression for the relative error in amplitude measurement and the absolute error in phase measurement of the complex reflection coefficient, due to power-reading errors, are derived in the worst-case situation using both the basic six-port and sensitivity analysis theories. The measurement precision of any point in the Smith chart is obtained by reference to lines of constant error (amplitude and phase) drawn on the Smith chart for various proposed six-port correlators (junctions). G.F. Engen´s (1977) six-port design provides the best overall accuracy in the measurement of Γ

Keywords

measurement errors; microwave reflectometry; network analysers; Smith chart; absolute error; amplitude measurement; complex reflection coefficient; constant error; measurement errors; phase measurement; power-reading errors; relative error; six-port correlators; Calibration; Correlators; Detectors; Dynamic range; Microwave measurements; Noise measurement; Phase measurement; Power measurement; Proposals; Reflection;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1988. IMTC-88. Conference Record., 5th IEEE

Conference_Location

San Diego, CA

Type

conf

DOI

10.1109/IMTC.1988.10861

Filename

10861