Khalichi, BahramErgül, Ö.Ertürk, Vakur B.2020-02-042020-02-042019-060018-926Xhttp://hdl.handle.net/11693/53027In this communication, a mixed-form multilevel fast multipole algorithm (MLFMA) is combined with the recently introduced potential integral equations (PIEs), also called as the A-φ system, to obtain an efficient and accurate broadband solver that can be used for the solution of electromagnetic scattering from perfectly conducting surfaces over a wide frequency range including low frequencies. The mixed-form MLFMA uses the nondirective stable planewave MLFMA (NSPWMLFMA) at low frequencies and the conventional MLFMA at middle/high frequencies. Various numerical examples are presented to assess the validity, efficiency, and accuracy of the developed solver.EnglishFast solversLow-frequency (LF) breakdownNondirective stable plane-wave MLFMA (NSPWMLFMA)Potential integral equations (PIEs)Article10.1109/TAP.2019.2905965