An improvement algorithm of Mur's first-order absorbing boundary condition

• Published in: 1997 IEEE International Symposium on Electromagnetic Compatibility pp. 592 - 595
• Main Authors: Weiping Dou, Linchang Zhang
• Format: Conference Proceeding
• Language: English
• Published: IEEE 1997
• Subjects: Absorption; Approximation algorithms; Boundary conditions; Computational modeling; Electromagnetic compatibility; Finite difference methods; Minimax techniques; Partial differential equations; Time domain analysis; Transceivers
• ISBN: 9780780341401; 0780341406
• DOI: 10.1109/ISEMC.1997.667748

The paper presents an improvement algorithm of Mur's first-order absorbing boundary condition, which greatly improves the absorption of absorbing boundaries in solving subjects by the finite-difference time-domain method, especially for those with a point or line radiation source. For validity, the field distribution of an isotropic point source is studied by the improvement algorithm, Mur's first-order and Mur's second-order absorbing boundary conditions respectively. It proves that the improvement algorithm is more efficient than Mur's first-order absorbing boundary condition. At the same time, it is simpler than Mur's second-order absorbing condition and saves memory. The paper also shows some numerical results of the near-field distribution of hand-held transceivers improvement algorithm, and compares the numerical and experimental results.