Installation for measuring the transmission coefficient at ultrahigh frequencies of nonmetallic materials at high temperatures up to 1200°C

Beljaev А.А., Bespalova E.E., Payarel S.M.
UDC
621.372.8:621.315.61
DOI
10.18577/2307-6046-2017-0-12-9-9
Article PDF (Russian) (829.17 KB)
How to cite
Beljaev А.А., Bespalova E.E., Payarel S.M. Installation for measuring the transmission coefficient at ultrahigh frequencies of nonmetallic materials at high temperatures up to 1200°C // Proceedings of VIAM. 2017. No. 12. DOI: 10.18577/2307-6046-2017-0-12-9-9. URL: https://test.viam.ru/en/journal/2017/12/9
Keywords
transmission coefficient of microwave frequency, radio-transparent material, high temperature, installation.
Abstract

In aviation and space engineering are widely used materials allowing the passage of electromagnetic energy – radio transparent materials. In the design of radio-transparent materials, especially multilayer and broadband is a very important point is the determination by experiment of the transmission coefficient (KP) as separate layers of the materials and multilayer material (or parts) in the whole specified frequency range (from decimeter to millimeter wavelengths). One of the most common methods is the measurement of dielectric properties of materials and then calculate KP. However, besides the fact that it is not direct measurement, such measurements are accompanied by errors due to inaccuracy of manufacture of the samples to the dimensions of the waveguide or resonator. In addition, at frequencies above 10 GHz, the dimensions of the waveguide or resonator section become smaller than the inhomogeneities of heterogeneous materials, which makes it impossible to carry out measurements

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