Khalichi, BahramErgül, Ö.Takrimi, ManouchehrErtürk, Vakur B.2022-01-272022-01-272021-06-240018-926Xhttp://hdl.handle.net/11693/76835Recently introduced incomplete tree structures for the magnetic-field integral equation are modified and used in conjunction with the mixed-form multilevel fast multipole algorithm (MLFMA) to employ a novel broadband incomplete-leaf MLFMA (IL-MLFMA) to the solution of potential integral equations (PIEs) for scattering/radiation from multiscale open and closed surfaces. This population-based algorithm deploys a nonuniform clustering that enables to use deep levels safely and, when necessary, without compromising the accuracy resulting in an improved efficiency and a significant reduction for the memory requirements (order of magnitudes), while the error is controllable. The superiority of the algorithm is demonstrated in several canonical and real-life multiscale geometries.EnglishIncomplete tree structuresLow-frequency breakdownMultilevel fast multipole algorithm (MLFMA)Multiscale electromagnetic problemsPotential integral equations (PIEs)Article10.1109/TAP.2021.30905741558-2221