Scattering and roughness analysis of indoor materials at frequencies from 750 GHz to 1.1 THz

Sheikh F, Zantah Y, Ben Mabrouk I, Alissa M, Barowski J, Rolfes I, Kaiser T (2021)

Publication Type: Journal article

Publication year: 2021

Journal

IEEE Transactions on Antennas and Propagation Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 69

Pages Range: 7820-7829

Journal Issue: 11

DOI: 10.1109/TAP.2021.3076577

Abstract

The problem of wave propagation and scattering at terahertz (THz) frequencies has become increasingly important, in particular for accurate modeling of future indoor wireless communication channels. The reflective properties of indoor materials with different surface roughness and dielectric constants are important to explore diffuse scattering for accurate channel modeling. First and foremost, a terahertz Swissto12 system is adopted to obtain the first ever transmission measurements for a wide choice of indoor material groups, such as wood, plastic, and brick at frequencies from 750 GHz to 1.1 THz using up-conversion (frequency-domain) method. Both the reflection (S11, S22) and transmission coefficients (S12, S21) are measured using this novel and noninvasive electromagnetic technique. The inversion method based on Kramers-Kronig (K-K) relations is then applied to convert the calibrated scatter data into intrinsic material properties (i.e., refractive index, permittivity, absorption coefficient). Then, the surface topography of rough material samples is acquired using surface measurement instruments. Further, the optically smooth (σh /λ ℓ 1) materials are assorted as most to least rough based on Rayleigh roughness factor. Lastly, the ray tracer considering the Rayleigh-Rice (R-R) scattering model is employed to obtain the maximum achievable reflected paths of the above-mentioned indoor material samples at 300 GHz followed by their experimental validation.

Authors with CRIS profile

Mai Alissa

Involved external institutions

Universität Duisburg-Essen (UDE) DE Germany (DE) Durham University GB United Kingdom (GB) Ruhr-Universität Bochum (RUB) DE Germany (DE)

How to cite

APA:

Sheikh, F., Zantah, Y., Ben Mabrouk, I., Alissa, M., Barowski, J., Rolfes, I., & Kaiser, T. (2021). Scattering and roughness analysis of indoor materials at frequencies from 750 GHz to 1.1 THz. IEEE Transactions on Antennas and Propagation, 69(11), 7820-7829. https://doi.org/10.1109/TAP.2021.3076577

MLA:

Sheikh, Fawad, et al. "Scattering and roughness analysis of indoor materials at frequencies from 750 GHz to 1.1 THz." IEEE Transactions on Antennas and Propagation 69.11 (2021): 7820-7829.

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