Dual five-port analyzer using fixed probes

Author

Munoz, Juan ; Margineda, Jose ; Martin, Emesto ; Rojo, Marta

Author_Institution

Dept. de Fisica, Murcia Univ., Spain

Volume

43

Issue

3

fYear

1994

fDate

6/1/1994 12:00:00 AM

Firstpage

415

Lastpage

420

Abstract

A dual 5-port network analyzer using fixed electric probes is presented. To measure S₁₁ and |S₂₁|, the RF signal is applied to port 1 of the DUT through one 5-port junction. The same RF signal reflected by a short circuit at the end of the line is used for measuring S₂₂. In this way, dividers, switches, and phase shifters as used in the standard dual technique are avoided. But S₂₂ can only be measured for devices with |S₂₁|>0.3. The 5-port junctions are inexpensive and very simple to design and operate. The mathematics involved uses simple linear algorithms, and iterative methods are not needed. Measurements for several loads have been performed in X-band, and the results agree with those obtained using an HP 8510B network analyzer

Keywords

computerised instrumentation; microwave measurement; microwave reflectometry; network analysers; network analysis; probes; DUT; HP 8510B network analyzer; RF signal; S₁₁; S₂₁; S₂₂; X-band; dual five-port analyzer; electric probes; fixed probes; iterative methods; linear algorithms; Calibration; Circuits; Current measurement; Electrooptical waveguides; Equations; Phase shifters; Probes; Reflection; Switches; Waveguide junctions;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.293460

Filename

293460