In the past, the multilevel fast multipole algorithm (MLFMA) has been successfully applied to the analysis of electromagnetic scattering from large and complex surfaces. Recently, we added a wire and surface-wire junction capability to our existing MLFMA codes, thereby enabling the analysis of radiation problems involving complex surfaces with wire attachments, all within a computational complexity of O(N logN0 per iteration, where N is the number of unknowns. This extension opens the door to several new applications, such as the analysis of antennas mounted on vehicles and the study of electromagnetic compatibility issues. A comparison between the MLFMA and the traditional method of moments (MOM) reveals that the MLFMA requires far less simulation time and memory resources without sacrificing numerical accuracy. As a result, the MLFMA enables the analysis of radiation phenomena involving complex environments using only a small computer.
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