Title :
Q-factor measurement with a scalar network analyser
fDate :
10/1/1995 12:00:00 AM
Abstract :
An accurate determination of the unloaded Q-factor of RF and microwave resonators is required when the electrical properties of materials are being measured or when the resonator is to be characterised for an application in a filter or an oscillator. A procedure is described of weighted least-square curve fitting to the measured magnitude of the reflection coefficient. The accuracy of the results is significantly improved by incorporating coupling losses in the equivalent circuit model
Keywords :
Q-factor measurement; cavity resonators; curve fitting; equivalent circuits; least squares approximations; microwave measurement; network analysers; Q-factor measurement; RF resonator; coupling losses; equivalent circuit model; microwave resonator; reflection coefficient; scalar network analyser; unloaded Q-factor; weighted least-square curve fitting;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:19952142
