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Home Environmental Milimeter wave dielectrometer for determination of electrical characteristics of liquids

Millimeter wave dielectrometer for determination of electrical characteristics of liquids


The dielectrometer bases on a high Q-factor dielectric resonator (DR). The resonator as semi disk is included in a return circuit of the mm wave Gunn diode that provides high-sensitivity autodyne mode of realization of measurements. The researched sample of a liquid is located in a capillary located inside of the DR. Volume necessary for researches of a liquid is not more than 0.02 ml. The frequency and signal amplitude at oscillator output are information for determination of the characteristics (complex permittivity) of researched liquids.

Innovative Aspect and Main Advantages

In contrast of existing analogues the offered device allows carrying out measurements of the complex permittivity of liquids having high losses of energy with high resolution in a mm range of wavelength, thus taking place in small volumes. Dielectrometer does not require an external source of a signal that determines its compactness and small weight. It has high adaptability to manufacture and low cost price.

Areas of Application

  1. Environmental monitoring of water resources, including quality control (pollution) of drinking water.
  2. A petroleum-refining industry.
  3. Medicine and a pharmaceutical industry.
  4. The food-processing industry.

Milimeter wave dielectrometer
Fig. 1 Millimeter wave dielectrometer

Stage of Development

Now the laboratory specimen of devices for measurement of liquids electrical properties is created. Its tests are carried out on liquids with the large and small distinction in values of electric characteristics (water, acetone, alcohol and their solutions with various percentage of one liquid in another).

Contact Details

Contact person: Oleksandr E. Kogut, Deputy Director of Science
Name of organization: Usikov Institute of Radiophysics and Electronics of NAS of Ukraine
Address: 12 Ac. Proskura Str., 61085, Kharkov, Ukraine
Tel.: +38-057-7203457 (w); +38-098-2637053 (mob)
Fax: +38-057-3152105
Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it


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