Comments on “A New Conformal FDTD for Lossy Thin Panels”
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AuthorRuiz-Cabello Núñez, Miguel David; González García, Salvador; Díaz Angulo, Luis Manuel; Martín Valverde, Antonio Jesús; Bourke, Samuel; Flintoft, Ian; Dawson, John
Finite-difference methodsElectromagnetic shieldingResonanceSpurious solutions
Publisher version: M. R. Cabello et al., "Comments on “A New Conformal FDTD for Lossy Thin Panels”," in IEEE Transactions on Antennas and Propagation, vol. 68, no. 10, pp. 7234-7235, Oct. 2020, [doi: 10.1109/TAP.2020.2976582]
SponsorshipSpanish MINECO and EU FEDER (MINECO, Spain) under Project TEC2016-79214-C3-3-R; COST Action under Grant IC1407 (ACCREDIT); EPSRC Studentship under Grant 1642594
In the article titled “A new conformal FDTD for lossy thin1panels” by M. R. Cabelloet al., the appearance of spiky antiresonances2in the simulation of the shielding properties of lossy thin-shell spherical3cavities by FDTD was categorized as spurious solutions. In this article,4we briefly clarify this topic and show that these solutions are not5really spurious in the common interpretation of the term. Actually, they6correspond to physical solutions appearing due to lack of symmetry,7inherent to the staggered colocation nature of field components in FDTD.