Mixed discretization of the time-domain MFIE at low frequencies

Ulku, H. Arda; Bogaert, Ignace; Cools, Kristof; Andriulli, Francesco P.; Bagci, Hakan

Abstract

Solution of the magnetic field integral equation, which is obtained by the classical marching-on-in-time (MOT) scheme, becomes inaccurate when the time-step is large, i.e., under low-frequency excitation. It is shown here that the inaccuracy stems from the classical MOT scheme's failure to predict the correct scaling of the current's Helmholtz components for large time-steps. A recently proposed mixed discretization strategy is used to alleviate the inaccuracy problem by restoring the correct scaling of the current's Helmholtz components under low-frequency excitation.

Citation

Ulku, H. A., Bogaert, I., Cools, K., Andriulli, F. P., & Bagci, H. (2017). Mixed discretization of the time-domain MFIE at low frequencies. IEEE Antennas and Wireless Propagation Letters, 16, 1565-1568. https://doi.org/10.1109/LAWP.2017.2651045

• Journal Article Type: Article
• Acceptance Date: Jan 8, 2017
• Publication Date: Jan 10, 2017
• Deposit Date: Sep 14, 2017
• Publicly Available Date: Sep 14, 2017
• Journal: IEEE Antennas and Wireless Propagation Letters
• Print ISSN: 1536-1225
• Electronic ISSN: 1548-5757
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 16
• Pages: 1565-1568
• DOI: https://doi.org/10.1109/LAWP.2017.2651045
• Keywords: Buffa–Christiansen (BC) functions, low-frequency analysis, magnetic field integral equation (MFIE), marching-on-in-time (MOT) method, mixed discretization, transient analysis
• Public URL: https://nottingham-repository.worktribe.com/output/841034
• Publisher URL: http://ieeexplore.ieee.org/abstract/document/7812659/
• Additional Information: (c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works