A Novel ADE-CN-FDTD With Improved Computational Efficiency for Dispersive Media

作者：Chen, Wei-Jun^*; Ma, Ping; Tian, Jing

来源：IEEE Microwave and Wireless Components Letters, 2018, 28(10): 849-851.

DOI：10.1109/LMWC.2018.2861208

• Auxiliary difference equation (ADE)
• Crank-Nicolson (CN) scheme
• dispersive media
• finite-difference time domain (FDTD)

A novel auxiliary difference equation (ADE) finite-difference time-domain (FDTD) method with Crank-Nicolson (CN) scheme is proposed for electromagnetic simulation of dispersive materials in this letter. The proposed method introduces an ADE technique that establishes the relationship between the electric displacement vector and electric field intensity in dispersive media with a difference equation. Hence, the CN scheme is only applied to one of the Maxwell curl equations, resulting in reduced memory usage and computing time. To validate the advantages of the proposed approach, an example with plane wave propagation in a dispersive media is presented. Compared with the conventional ADE-CN-FDTD method, the proposed method consumes much less computing time while preserves excellent simulation accuracy.

• 出版日期2018-10
• 单位中国空气动力研究与发展中心; 电子科技大学