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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Imprimer: 0040-2508
ISSN En ligne: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v75.i1.70
pages 71-86

ACTIVE QUASI-OPTICAL REFRACTOMETER IN THE EXTREMELY HIGH FREQUENCIES (EHF) BAND

V. N. Skresanov
A.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
V. V. Glamazdin
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura Str., 61085 Kharkiv, Ukraine
Anatoly Ivanovich Fisun
A.Ya. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkov 61085, Ukraine
A. I. Shubnyi
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkiv 61085, Ukraine

RÉSUMÉ

A precision EHF band refractometer used for measuring small variations of permittivity and/or permeability of substances, including gases, is suggested and tested. The basis of the method and the device is formed by the interrelation between the quasi-optical Gunn oscillator frequency and dielectric and magnetic constants of the sample placed into the high-Q open resonance system of the oscillator. Description of the suggested thermally compensated quasi-optical generator with a low level of noise is given and its characteristics are provided. A cuvette for investigation of powdery substances is designed, and the results of numerical modeling of the open resonator with a cuvette are provided. Estimation of the threshold sensitivity of the measuring system to small variations of the refraction factor is performed.


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