Experimental Determination of Equivalent Circuit Parameters of an Open Resonator Coupled to Transmission Lines

Diffraction Radiation Oscillator with Asymmetric Open Resonant System. Part I. Cold Test Results of Open Resonant System

“…In the experiment we measured the loaded Q-factor QL and the coupling coefficient of the ORS  on the res-onance curve for the reflection coefficient module || in the output waveguide [14]. The coupling port inserts a negligible reactivity in ORS and the resonant curve for || was almost symmetric, which allowed us to use the results of scalar measurements of reflection coefficient at resonance frequency |0| and at detuning from the resonance frequency |s|.…”

An Open Resonance Cell for Millimeter Wave Dielectrometer Applications

“…To determine the tan δ of the test rod, the Q-factor of a loaded ORC and the coupling coefficient of the H 05 -mode were measured in the empty ORC and in the ORC perturbed with the test rod put at the central maximum of the mode electric field. The Q 0 of the H 05 -mode was sought considering the "non resonant" loss in terms of concentrated coupling hole [14]. Formula (8) was used for the tan δ calculation, and the ohmic loss with and without the test rod was assumed the same.…”

Microwave Circuits Technique for Measuring Open Resonator Parameters Under Conditions of Hybrid Mode Excitation

“…The methods of determination of losses in the coupling devices are developed [1,2], in particular, the determination of radiating losses in the coupling elements of open resonators (OR) [3,4], neglection of which results in regular errors. The method of total impedance, in its classical form, assumes the excitation of single modes in the resonator.…”

“…This is quite acceptable for the use of our technique in the experimental data processing. 3. Example of the measurement of a hybrid excitation mode in OR.…”