An Open Resonance Cell for Millimeter Wave Dielectrometer Applications

Abstract

Abstract-An open resonance cell (ORC) with finite-length cylindrical mirrors is suggested for making absolute measurements of complex permittivity in the case of stretched cylindrical specimens or liquid dielectrics in cylindrical containers. For H-polarization, we report ORC features simulated in rigorous electromagnetic terms using a twodimensional (2-D) model of an open resonator with cylindrical mirrors and a dielectric test rod inserted. On this basis, the ORC laboratory prototype with finite-length mirrors was built. The measurements of dielectric test rods were performed in the 10 mm wave band. In the studies of dielectric materials, E-polarized modes of the cylindricalmirror ORC demonstrate some specific features, which are discussed, too.

Diffraction Radiation Oscillator With Frequency Tuning on Mutual Coupled Modes in an Open Resonant System

“…The double comb was placed in the rectangular groove, its parameters were: a = 5.58 mm, b = 10.0 mm, l = 1.0 mm, d = 0.5 mm, δ = 0.2 mm. The dispersion curves D mnq (f ) and the ORS Q-factor on the mutual coupled modes were obtained by reflection coefficient measurements in the output waveguide [14].…”

Resonant Systems for Measurement of Electromagnetic Properties of Substances at V-Band Frequencies

“…Measurements are carried out using the experimental setup, a block diagram of which is presented in Figure 4, and its photo is shown in Figure 5. Eigen Q-factor of the resonant system with the measured sample Q 0ε is defined by the relation [7,17] 1…”