A Complex Domain Mapping of the SCN for an Effective PML Implementation in TLM

Odeyemi, Jomiloju S.; Vukovic, Ana; Benson, Trevor M.; Sewell, Phillip D.

Abstract

An improved implementation of the perfectly matched layer (PML) is developed for the Transmission Line Modelling (TLM) method based on a mapping of the symmetrical condensed node (SCN) to an analytically extended geometric space. By mapping the TLM node, a medium — circuit equivalence is developed which maps transmission line parameters from real to complex domain. This consequently modifies the TLM scatter-connect process. The PML implementation is demonstrated for canonical cases where it is shown to have a comparable absorption performance and a significantly improved temporal stability relative to previously published TLM-PML formulations.

• Journal Article Type: Article
• Acceptance Date: Apr 4, 2020
• Online Publication Date: Apr 8, 2020
• Publication Date: 2020
• Deposit Date: Apr 22, 2020
• Publicly Available Date: Apr 22, 2020
• Journal: IEEE Open Journal of Antennas and Propagation
• Print ISSN: 2637-6431
• Electronic ISSN: 2329-8413
• Peer Reviewed: Peer Reviewed
• Volume: 1
• Pages: 2637-6431
• DOI: https://doi.org/10.1109/ojap.2020.2986293
• Public URL: https://nottingham-repository.worktribe.com/output/4326509
• Publisher URL: https://ieeexplore.ieee.org/document/9061061