Ultrawide measurement bench for measuring electromagnetic properties of materials in free space in a microwave range

Semenenko, V. N.; Chistyaev, V. A.; Politiko, A. A.; Baskov, K. M.

doi:10.32446/0368-1025it.2019-2-55-59

Cited by 7 publications

(4 citation statements)

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“…Besides comparing the results of RC measurements of coatings by the two methods indicated above, RCs of samples of radar absorbing materials and coatings were also studied using a stationary stand for measuring the parameters of materials and coatings in free space with normalized metrological characteristics [4]. The measurement results obtained at this stand were taken as reference indicators when performing a comparative analysis.…”

Section: Measurements and Analysis Of The Resultsmentioning

confidence: 99%

“…In order to eliminate the effect of rereflections between the measured sample and horn antennas, digital signal processing methods, i.e., time domain selection of interfering reflections with suppression of the Gibbs effect [4], were used.…”

Section: Measurements and Analysis Of The Resultsmentioning

confidence: 99%

“…RC meter, it is necessary to use an antenna probe (horn) with such geometric parameters that would ensure measurement accuracy close to the accuracy of measurements in free space [4] in the range of RC values from 0 to -40 dB. To ensure high accuracy of measurements, it is necessary that the horn is in good matching with the free space, which means that there should be a field distribution in the horn aperture that corresponds to a traveling wave with wave impedance close to the free space resistance.…”

Section: Determination Of Horn Parameters For High-precision Measurementsmentioning

confidence: 99%

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Portable Microwave Reflection Coefficient Meter of Coatings

Baskov

Danilov²,

Politiko

et al. 2020

J. Commun. Technol. Electron.

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In this study, we propose a new design of a portable meter of reflection coefficients of radar absorbing coatings. An experimental comparison of the reflectivity meters of the new and traditional types is performed. The technical, operational, and cost advantages of a meter of a new type are shown. The efficiency of the meter calibration system was developed and proven, and the optimal geometric parameters of the antenna probe that ensures high-accuracy measurements of the reflection coefficient of radar absorbing coatings were determined.

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Section: Measurements and Analysis Of The Resultsmentioning

confidence: 99%

Section: Measurements and Analysis Of The Resultsmentioning

confidence: 99%

Section: Determination Of Horn Parameters For High-precision Measurementsmentioning

confidence: 99%

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Portable Microwave Reflection Coefficient Meter of Coatings

Baskov

Danilov²,

Politiko

et al. 2020

J. Commun. Technol. Electron.

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“…Reflection and transmission coefficients of the FSS with and without VO 2 were measured according to a procedure, described here. [ 21 ] The FSS was placed in an aperture of a metallic diaphragm, located between ultra‐wideband horn antennas. The frequency response of the sample was measured in the 2–18 GHz frequency range for normal incidence of linearly polarized electromagnetic wave.…”

Section: Methodsmentioning

confidence: 99%

Thermally Tunable Frequency‐Selective Surface Based on VO₂ Thin Film

Polozov

Maklakov²,

Mishin³

et al. 2020

Physica Status Solidi (a)

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An approach to a design of tunable frequency‐selective surfaces (FSSs) for radio frequency (RF) domain based on vanadium dioxide (VO2) thin films is proposed. As an example, a thermally tunable annular slot FSS with integrated VO2 switchable elements for C‐band of the RF domain is described. Switching is based on abrupt change of conductivity of the VO2 film, initiated by heating from room temperature to a temperature of the metal–insulator phase transition of 44 °C. A tuning mechanism of the FSS allows continuous change of frequency response from room temperature state, where the FSS acts as a band‐pass filter, to high‐temperature state, where the FSS works as a reflector. In the process of tuning, a reflection coefficient at a central frequency of the filter can be increased from −26.4 dB up to −2.2 dB. The proposed approach can be used for the design of tunable FSS for applications that allow thermal control of the frequency response.

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