A High-Order Time-Domain Discontinuous Galerkin Integral Equation Method for Analysis of Multiscale PEC Objects

Using a high-order time-domain discontinuous Galerkin approach, the transient electromagnetic (EM) scattering from perfectly electric conducting complicated multiscale objects is examined in this work. High-order hierarchical vector basis functions and curved triangular elements are used to reduce the unknowns of the surface integral equation for multiscale EM simulation. A discontinuous Galerkin method is proposed to join nearby subdomains’ conformal/nonconformal surface grids together. Numerical examples are provided to further support the precision and effectiveness of the suggested strategy.