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Comments on ”A new conformal FDTD for lossy thin panels”

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Publication details

JournalIeee transactions on antennas and propagation
DateAccepted/In press - 7 Feb 2020
DateE-pub ahead of print - 4 Mar 2020
DatePublished (current) - 7 Oct 2020
Issue number10
Number of pages2
Pages (from-to)7234-7235
Early online date4/03/20
Original languageEnglish


In the paper ”A new conformal FDTD for lossy thin panels” by M. R. Cabello et al., the appearance of spiky antiresonances in the simulation of the shielding properties of lossy thin-shell spherical cavities by FDTD, was categorised as spurious solutions. In this document, we briefly clarify this topic, and show that these solutions are not really spurious in the common interpretation of the term. Actually, they correspond to physical solutions, appearing due to lack of symmetry inherent to the staggered co-location nature of field components in FDTD.

Bibliographical note

Draft 23 Oct. 2019, Submitted TAP 20 Jan 2020, Early online 4 March 2020

    Research areas

  • Finite difference methods, Time-domain analysis, Cavity resonators, Antennas, Boundary conditions, Resonant frequency, Finite-Difference methods, Electromagnetic shielding, Resonance, Spurious solutions

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