Exploring the Validity of Plane and Spherical Millimeter-Wave Incidences for Multiple-Diffraction Calculations in Wireless Communication Systems

The focus of this work is to determine at which threshold can the results for both plane and spherical wave incidence assumptions either converge or deviate when performing multiple diffraction attenuation calculations. analysis has been carried out—for various millimeter-wave frequencies, inter-obstacle spacings, angles incidence—by employing a pair two-dimensional (2D) hybrid formulations based on uniform theory physical optics (UTD-PO). This way, we seek demonstrate under circumstances each assumption be valid in environments that entail bands. Based this, may ensure minimum necessary distance from transmitter first diffracting obstacle convergence solution onto with relative error below 0.1%. Our less than four elements, engages quasi-linear behavior variations angle spacing. Notably, considered frequencies (60–100 GHz) have almost no bearing results. findings will facilitate simplified, more accurate realistic planning radio communication systems, diffractions across obstacles.