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In this paper a free-space method is presented for space-resolved measurement of the relative permittivity and thickness of a single layer dielectric material in the W-band. The reflection of parallel and perpendicularly polarized waves from the material under test is measured with a polarimetric linear array. Synthetic aperture focusing of the raw data is performed, in order to obtain space-resolved...
A non-destructive microwave measurement setup for broadband complex permittivity determination of solid materials over a frequency band from 0.05 GHz to 6 GHz is presented. The setup design was optimized for measurements of glass materials with planar and convex surfaces, but works with other dielectric materials as well. The measurement method is based on the near field coupling of two open-ended...
This paper presents an approach for the detection of dielectric layers on human bodies and the determination of their dielectric constant with single frequency measurement data in the W-band (75–110 GHz). The measurements were performed with a polarimetric multistatic array, which was optimized for short range applications. The scattering matrix of each resolution element was analyzed via the reflection...
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