Modelling and Measuring Reflection Due to Flat Dielectric Surfaces at 5.8 GHz

• Published in: IEEE transactions on antennas and propagation Vol. 55; no. 4; pp. 1139 - 1147
• Main Authors: Cuinas, I., Martinez, D., Sanchez, M.G., Alejos, A.V.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.04.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Antenna measurements; Antennas; Applied sciences; Computer simulation; Computer vision; Dielectric measurements; Dielectric surface; Electromagnetic reflection; Electromagnetic scattering; Exact sciences and technology; Frequency; Mathematical models; Optical reflection; Optical scattering; Optical surface waves; Organization and planning of networks (techniques and equipments); Physical optics; Radiocommunications; Reflection; Scattering; Specular reflection; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Walls; reflection; Transmission channel; Algorithm; Modeling; Implementation; Indoor radio; Simulation; scattering; Coding; Physical optics; Specular reflection; Planning; Radio communication; Dielectric surface; Antenna radiation patterns; Reflectance
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/TAP.2007.893399

Indoor radio channel planning tools implement different models to simulate propagation mechanisms such as transmission or reflection. The specular reflection formulation is commonly used instead of more complete scattering models. This happens because its coding is less complicated and the software runs faster than when considering reflection in all directions, not yet specular. In this paper, results from measurements are presented, consisting of the effect of constructive walls on an oblique incident wave. These experimental outcomes are modelled by means reflection pattern computations. Physical optics scattering model is used in its classical formulation, and it is then modified to take into account antenna pattern effects in the measurements. The comparison between measurements and simulations is also presented, showing good agreement. Measurements show that low reflective walls produce reflections in several directions across the incidence region. In these situations, the use of algorithms that compute reflection pattern, instead of just specular reflection coefficients, will lead to better agreement with actual results