Statistical approach to measurements with microwave multi-port reflectometer and optimization of its construction

Author

L´vov, A.A. ; Geranin, R.V. ; Semezhev, N. ; L´vov, P.A.

Author_Institution

Int. Dept. of Appl. IT, Gagarin State Tech. Univ. of Saratov, Saratov, Russia

fYear

2015

fDate

22-23 April 2015

Firstpage

1

Lastpage

4

Abstract

A new universal technique for microwave load complex reflection coefficient estimation with an arbitrary multiport reflectometer based on the solution of its quadric equations by the maximum likelihood method is proposed. The expressions for error matrix of estimating parameters are obtained in linear approximation that allows one to investigate analytically the measuring uncertainties. An optimization method of multiport parameters for measurement in narrow and wide frequency ranges is described. The results of computer simulation confirming the theoretical conclusions are given.

Keywords

approximation theory; frequency measurement; matrix algebra; maximum likelihood estimation; measurement uncertainty; microwave measurement; optimisation; parameter estimation; reflectometers; statistical analysis; error matrix; frequency measurement; linear approximation; maximum likelihood method; measurement uncertainty; microwave load complex reflection coefficient estimation; microwave multiport reflectometer; optimization method; parameter estimation; quadric equation; statistical approach; Accuracy; Frequency measurement; Maximum likelihood estimation; Microwave measurement; Microwave theory and techniques; Ports (Computers); complex reflection coefficient; generalised variance; maximum likelihood method; multi-port reflectometer; optimisation procedure;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Techniques (COMITE), 2015 Conference on

Conference_Location

Pardubice

Print_ISBN

978-1-4799-8121-2

Type

conf

DOI

10.1109/COMITE.2015.7120229

Filename

7120229