Multiband Measurement-Based Characterization of Building Materials

Millimeter-wave and sub-THz wireless communications promise high data rate and low-latency transmission for both indoor and outdoor short-range applications, but their deployment faces challenges due to the high isotropic path loss and severe obstacle penetration attenuation. The upper mid-band -also known as "FR3", between 7 and 24 GHz -is gaining significant attention for 6G applications, but the corresponding propagation and material characteristics still remain scarcely investigated. Therefore, thorough studies of radio-wave interaction with the most common construction materials in the cited frequency bands are very important for the design and deployment of next-generation wireless systems. The present study investigates the attenuation and scattering behaviors of some of the most common construction materials at frequencies ranging from 10 to 153 GHz, using proper measurement setups and post-processing procedures. Our findings can contribute to the design of future communication systems and to the calibration of propagation simulators that are necessary for their optimization and deployment in real-life scenarios.