Material Reflection Measurements in Centimeter and Millimeter Wave ranges for 6G Wireless Communications

Abstract

Research in the field of telecommunication is moving towards 6G. Upper mm Wave frequencies (100-300 GHz) are seen as a promising band for 6G. ITU recommendations on material characteristics are limited to 100 GHz. This study aims to further extend the currently existing knowledge on wavematerial interaction and make the link between below and above 100 GHz frequencies by providing reflection measurements from 2 to 170 GHz. The material reflection coefficients of seventeen different materials e.g. glass, wood, aerated concrete, and polystyrene are continuously reported along the measured band. The measurement setup is based on a vector network analyzer with millimeter wave extension modules connected starting from 50 GHz.

Multi-Layer Building Material Modeling and Parameter Estimation Method by Wide-Band Free Space Measurement

“…Material examples Parameters Radio propagation measurement [6] Aalto University 60 GHz Indoor wall, floor, glass R, ϵr [7] New York University 28 GHz Outdoor wall, glass R, T [8] The University of Sheffield 39 GHz Indoor wall R, T [9] New York University 73 GHz Indoor wall, door, glass T [10] Ghent University 110 -170 GHz Wood wall, cardboard, glass R, T [11] Durham University 28, 39 GHz Indoor glass, plasterboard R, T [12] Orange Labs 2 -170 GHz Concrete wall, glass, plasterboard R [13] Technische Universität Braunschweig 50 -75, 270 -320 GHz Polyethylene, acrylonitrile butadiene styrene R, T [14] The University of South Carolina…”

“…Because the information on the radio wave reflection and penetration characteristics of the environmental objects is important for accurate radio propagation simulation, several measurement campaigns were conducted outdoors [7] and indoors [8]- [10]. There are several measurements of the reflection characteristics of individual objects in the mmwave band [11] [12] and the THz band [13]. In particular, because the attenuation of radio waves becomes severe in the high-frequency bands, the penetration loss characteristics of building materials were investigated [14] [15].…”

A Wideband Non-Stationary 3D GBSM for HAP-MIMO Communication Systems at Millimeter-Wave Bands

“…With the development of 6G technology, it is expected that HAP communication will achieve higher channel capacity and meet the growing data demand, especially in emerging technologies such as autonomous driving and virtual reality [26,27]. There is a clear need for HAP communication systems that can provide higher bandwidths and faster data transfer rates.…”