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2026-03-25

Comment on “Transfer Matrix Method for General Bianisotropic Layers”: Correction of Explicit Formulations

Joosun Yun

Dr. Joosun Yun

ComPhysics

South Korea

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Progress In Electromagnetics Research C, Vol. 167, 242-243, 2026

doi:10.2528/PIERC26020202 | Google Scholar

Abstract

This comment addresses errors in the explicit expressions of the Ω matrix presented by Blankenship et al. (2025) [1]. We show that sign inconsistencies in the original formulation can lead to non-physical results, including the violation of energy conservation in passive lossless environments. We provide corrected formulas for the affected matrix entries and numerically verify that the corrected formulation restores physical consistency, with the total energy conserved to the displayed precision in the lossless benchmark.

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Joosun Yun, "Comment on “Transfer Matrix Method for General Bianisotropic Layers”: Correction of Explicit Formulations," Progress In Electromagnetics Research C, Vol. 167, 242-243, 2026.
doi:10.2528/PIERC26020202

References

1. Blankenship, Morgan A., Edgar Bustamante, and Raymond C. Rumpf, "Transfer matrix method for general bianisotropic layers," Progress In Electromagnetics Research B, Vol. 114, 99-106, 2025.
doi:10.2528/pierb25021707 Google Scholar

2. Mackay, Tom G. and Akhlesh Lakhtakia, The Transfer-Matrix Method in Electromagnetics and Optics, Morgan & Claypool, 2020.
doi:10.1007/978-3-031-02022-3

3. Rumpf, Raymond C., "Improved formulation of scattering matrices for semi-analytical methods that is consistent with convention," Progress In Electromagnetics Research B, Vol. 35, 241-261, 2011.
doi:10.2528/pierb11083107 Google Scholar