Naslov
A simple low cost three-probe waveguide reflectometer in 7 GHz band

Autori
Hrabar, Silvio ; Babić, Nenad ; Balachandran, Wamadeva

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the KoREMA '96 - 41st Annual Conference / Bartolić, Juraj - Opatija : Hrvatsko društvo za komunikacije, računarstvo, elektroniku, mjerenja I automatiku (KoREMA), 1996, 79-82

Skup
KoREMA '96 - 41st Annual Conference

Mjesto i datum
Opatija, Hrvatska, 18.09.1996. - 20.09.1996

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
microwave measurements; network analysis; three-probe reflectometer

Sažetak
The reflection coefficient measurement technique using a three-probe reflectometer was analyzed. Based on the results of the theoretical analysis, a very simple and low cost automated stepped frequency six-port reflectometer in the 7 GHz band was designed and manufactured. A six-port network was fabricated using a simple three-probe hybrid waveguide-coaxial structure and "off the shelf" waveguide components. An automatic measuring system was implemented by adding sweep generator and commercial power meters controlled by a PC computer. Calibration was implemented using the modified Neumeyer method. Measurements were made using few unknown loads and the achieved accuracy was 3% in magnitude and 1degree in the phase in the whole waveguide band. It was in good agreement with the theoretical prediction.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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