A Conducting Cylinder for Modeling Human Body Presence in Indoor Propagation Channel

• Published in: IEEE transactions on antennas and propagation Vol. 55; no. 11; pp. 3099 - 3103
• Main Authors: Ghaddar, M., Talbi, L., Denidni, T.A., Sebak, A.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.11.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied classical electromagnetism; Applied sciences; Biological system modeling; Circular cylinders; Conduction; Cylinders; Diffraction; Diffraction, scattering, reflection; Electromagnetic propagation; Electromagnetic wave propagation, radiowave propagation; Electromagnetism; electron and ion optics; Engine cylinders; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Human body; Human body modeling; Humans; Indoor; Indoor radio communication; indoor radio propagation; Mathematical models; Microwave frequencies; Microwave propagation; Obstacles; obstruction; Performance evaluation; Physical theory of diffraction; Physics; Polarization; Radiocommunications; Radiowave propagation; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); uniform theory of diffraction (UTD); Line of sight propagation; obstruction; Electromagnetic wave diffraction; Transmission channel; Polarized wave; Horizontal polarization; Vertical polarization; Modeling; Radiowave propagation; Indoor radio; Human body modeling; Continuous wave; Human body model; Indoor installation; Electromagnetic wave propagation; Simulation; Circular cylinder; uniform theory of diffraction (UTD); polarization; Smooth surface; indoor radio propagation
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/TAP.2007.908563

We demonstrate that in indoor radio propagation modeling, the presence of the human body may be approximated by a conducting circular cylinder at microwave frequencies. Therefore, a perfect tool such as the uniform theory of diffraction may be used to predict the diffracted field over a smooth circular surface. To validate the model, vertically and horizontally polarized continuous wave (CW) measurements were performed at 10.5 GHz between two fixed terminals inside a room along with the presence of an obstacle (person or metallic cylinder) moving along predetermined parallel and perpendicularly crossing paths with respect to the line-of-sight direction. Results indicate that there is a strong correlation between the effects of the human body and those of a conducting circular cylinder. The simulation results successfully agree with the CW experimental measurements.