Second-Order Nodal DGTD Method for Electromagnetic Simulation

In this work, the second-order nodal basis functions based on the tetrahedron elements are employed in the discontinuous Galerkin time-domain (DGTD) method to improve the computational efficiency and reduce the memory cost. A radiation example is simulated to show the accuracy and efficiency. And a scattering example with the incident-wave directly loaded (IWDL) method is simulated to demonstrate the practicality of engineering.