A Synchronized Multigrid Time Domain Method Via Huygens Subgridding and Implicit Algorithms

作者：Huang Zhenyu^*; Pan Guangwen George; Chen Kun Shan

来源：IEEE Transactions on Antennas and Propagation, 2013, 61(5): 2605-2614.

DOI：10.1109/TAP.2013.2244548

• Extinction theorem
• field teleportation (FTP)
• Huygens principle
• subgridding
• unconditional stability

Based upon Huygens%26apos; subgridding (HSG) technique and unconditionally stable time domain algorithms, we present a synchronized multigrid time domain method for 2- and 3-D scattering problems. In this method, the implicit algorithms are employed in the fine grid region, while the Yee-FDTD is marching on the coarse mesh. As a result, the electromagnetic fields in both coarse and fine grid regions are updated synchronously. The synchronization has greatly simplified the HSG implementation and reduced updating substeps. Numerical examples demonstrate extremely low spurious reflection at the interface, robust stability for arbitrarily large spatial ratios, and suppression of late time instability.

• 出版日期2013-5
• 单位中央民族大学