WASP-NET: Recent advances in fast EM CAD and optimization of waveguide components, feeds and aperture antennas

WASP-NET's advanced multi-solver hybrid domain (de)composition technique, which is uniquely based on six solvers - mode-matching (MM) / finite-element (FE) / method-of-moment (MoM) / finite-difference (FD) / finite-element boundary-integral (FE-BI) / physical theory of diffraction (PTD) -, fully utilizes the efficiency and flexibility advantages of the involved methods. The CAD tool's recent advances include a graphical 3D structure editor for arbitrary user-defined structures parametrized by variables, 3D structure import via standard data formats, and the inclusion of efficient MoM techniques for, e.g., radar cross-section (RCS) investigations, fast optimizations of large antenna arrays, and the inclusion of lossy dielectrics and tensor materials. The high calculation speed and 3D flexibility will be demonstrated at typical examples that are relevant for the antenna engineer, e.g., arbitrarily shaped ortho-mode-transducers (OMTs), shaped reflector antennas with layered, lossy radomes, and slot arrays.