Title :
An automated 60 GHz open resonator system for precision dielectric measurements
Author :
Afsar, Mohammed N. ; Li, Xiaohui ; Chi, Hua
Author_Institution :
Dept. of Electr. Eng., Tufts Univ., Medford, MA, USA
fDate :
12/1/1990 12:00:00 AM
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
Keywords :
automatic test equipment; cavity resonators; dielectric loss measurement; permittivity measurement; 60 GHz; EHF; automated open resonator system; cavity length variation; dielectric permittivity; frequency variation techniques; high-Q hemispherical Fabry-Perot cavity; loss tangent; low absorbing materials; millimetre wave operation; phase-locked Gunn oscillator sources; precision dielectric measurements; superheterodyne receiver; Dielectric loss measurement; Dielectric losses; Dielectric materials; Dielectric measurements; Fabry-Perot; Gunn devices; Loss measurement; Oscillators; Permittivity measurement; Q measurement;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
