A 60 GHz Open Resonator System for Dielectric Measurement

A precision automated open resonator system is designed and constructed for the measurement of loss tangent and dielectric permittivity of low absorbing materials at 60 GHz. The high Q hemispherical Fabry-Perot cavity together with highly stabilized synthesized phase locked Gunn oscillator sources and the super heterodyne receiver enable us to measure loss tangent value as low as 10 micro-radians.