Title :
Measurement of dielectrics at 100 GHz with an open resonator connected to a network analyzer
Author :
Hirvonen, Taavi M. ; Vainikainen, Pertti ; Lozowski, Andrzej ; Räisänen, Antti V.
Author_Institution :
Radio Lab., Helsinki Univ. of Technol., Espoo, Finland
fDate :
8/1/1996 12:00:00 AM
Abstract :
A high-Q hemispherical open resonator is connected to an automatic network analyzer to enable precise and fast determination of the permittivity and loss tangent of low-loss dielectric materials at 100 GHz. Both scalar theory and vector theory with a frequency variation method are used to determine the dielectric properties of low-loss materials which are used in quasioptical components, for example in fusion reactor windows and tenses for millimeter-wave receivers. The uncertainty of the measurement is 0.02% to 0.04% for εr(εr⩾2) and 6-40×10-6 for tan δ(10-4⩽tan δ⩽10-3 )
Keywords :
cavity resonators; millimetre wave measurement; network analysers; permittivity measurement; 100 GHz; automatic network analyzer; frequency variation method; fusion reactor windows; high-Q hemispherical open resonator; loss tangent; low-loss materials; millimeter-wave receivers; network analyzer; open resonator; permittivity; quasioptical components; scalar theory; vector theory; Dielectric losses; Dielectric materials; Dielectric measurements; Loss measurement; Millimeter wave measurements; Millimeter wave technology; Mirrors; Optical materials; Permittivity measurement; Resonance;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
