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Measurement of microwave permittivity using a six-port reflectometer with an open-ended coaxial line

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2 Author(s)
Ghannouchi, F.M. ; Ecole Polytech. de Montreal, Que., Canada ; Bosisio, R.G.

A nondestructive broadband permittivity-measurement method using an automatic six-port reflectometer is presented. The impedance sensor is an open-ended coaxial line terminated by a semi-infinite medium. The equivalent model of the sensor used is based on an equivalent effective transmission-line length which models the fringing field at the extremity of the probe. The proposed method is useful to measure relatively high-loss dielectric liquids and provides a precision comparable to other methods already in use; however, the equipment costs are considerably reduced

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Instrumentation and Measurement, IEEE Transactions on  (Volume:38 ,  Issue: 2 )