An automated 60 GHz open resonator system for precision dielectricmeasurements |
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Authors: | Afsar M.N. Li X. Chi H. |
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Affiliation: | Dept. of Electr. Eng., Tufts Univ., Medford, MA ; |
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Abstract: | An automated open resonator system was designed and constructed for precision measurement of the loss tangent and dielectric permittivity of low absorbing materials at 60 GHz. The use of a high-Q hemispherical Fabry-Perot cavity together with highly stabilized synthesized phase-locked Gunn oscillator sources and a superheterodyne receiver made it possible to measure loss tangent values as low as 10 μrad. Both cavity length variation and frequency variation techniques were utilized to provide precise data |
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