Department of Electrical and Electronics Engineering2024-11-0920200013-519410.1049/el.2020.15932-s2.0-85098912930https://hdl.handle.net/20.500.14288/2289The technical performance requirements from wireless communication networks are continuously rising. One method to satisfy the demands is increasing the carrier frequency to the millimetre wave or low terahertz band spectrum to utilise wider operation bandwidth. In order to facilitate the studies in this frequency range, the corresponding electromagnetic (EM) wave properties, channel attributes and material characteristics need to be analytically formulated. In line with these, this Letter initially presents the theoretical expressions governing the EM wave transmission across a conducting medium. Then, by using the relative S21 parameter quantities in the proposed attenuation constant (alpha) computation technique, the alpha results of the measurements performed between 260 and 350 GHz for the clear window glass samples of different thicknesses are given. This Letter concludes with the evaluation of the outcomes.pdfEngineeringJournal Article1350-911Xhttps://doi.org/10.1049/el.2020.1593604957700026Q4NOIR02671