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Telecommunications and Radio Engineering

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ISSN Online: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v65.i10.70
pages 937-947

Application of Disk-Containing Quasioptical Dielectric Cavity Resonators for Investigating Two-Component Aqueous Solutions in Small Volumes

A. I. Gubin
O.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
A. A. Lavrinovich
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine
Nikolay T. Cherpak
O.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine

ABSTRACT

The paper presents results of experimental investigations of quasi-optical disk-containing dielectric cavity resonators with the capillary filled by a binary solution based on a lossy liquid component (water). Ethanol and acetone were used as the second component of the solution. As has been found, many features of the cavity's eigenfrequency and Q-factor dependences upon concentration of one of the solution components which were measured for the water-ethanol solution, are well correlated with calculated values of the dielectric constant. The measurements were conducted at the frequencies 37 to 40GHZ for the HE whispering-gallery mode excited in the cavity. The investigated cavity resonator could be used as a cell for measuring characteristics of solutions in small volumes.