The deep penetration of electromagnetic waves into lossy media can be obtained by properly generating inhomogeneous waves. In this work, for the very first time, we demonstrate the physical implementation and the practical relevance of this phenomenon. A thorough numerical investigation of the deep-penetration effects has been performed by designing and comparing three distinct practical radiators, emitting either homogeneous or inhomogeneous waves. As concerns the latter kind, a typical Menzel microstrip antenna is first used to radiate improper leaky waves. Then, a completely new approach based on an optimized 3-D horn TEM antenna applied to a lossy prism is described, which may find applications even at optical frequencies. The effectiveness of the proposed radiators is measured using different algorithms to consider distinct aspects of the propagation in lossy media. We finally demonstrate that the deep penetration is possible, by extending the ideal and theoretical evidence to practical relevance, and discuss both achievements and limits obtained through numerical simulations on the designed antennas.

Verification of the electromagnetic deep-penetration effect in the real world / Baccarelli, Paolo; Calcaterra, Alessandro; Frezza, Fabrizio; Mangini, Fabio; Ricciardella, Nicholas; Simeoni, Patrizio; Tedeschi, Nicola. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - 11:1(2021), p. 15928. [10.1038/s41598-021-95080-w]

Verification of the electromagnetic deep-penetration effect in the real world

Baccarelli, Paolo;Calcaterra, Alessandro;Frezza, Fabrizio;Mangini, Fabio;Ricciardella, Nicholas;Simeoni, Patrizio;Tedeschi, Nicola
2021

Abstract

The deep penetration of electromagnetic waves into lossy media can be obtained by properly generating inhomogeneous waves. In this work, for the very first time, we demonstrate the physical implementation and the practical relevance of this phenomenon. A thorough numerical investigation of the deep-penetration effects has been performed by designing and comparing three distinct practical radiators, emitting either homogeneous or inhomogeneous waves. As concerns the latter kind, a typical Menzel microstrip antenna is first used to radiate improper leaky waves. Then, a completely new approach based on an optimized 3-D horn TEM antenna applied to a lossy prism is described, which may find applications even at optical frequencies. The effectiveness of the proposed radiators is measured using different algorithms to consider distinct aspects of the propagation in lossy media. We finally demonstrate that the deep penetration is possible, by extending the ideal and theoretical evidence to practical relevance, and discuss both achievements and limits obtained through numerical simulations on the designed antennas.
inhomogeneous electromagnetic waves, lossy media
01 Pubblicazione su rivista::01a Articolo in rivista
Verification of the electromagnetic deep-penetration effect in the real world / Baccarelli, Paolo; Calcaterra, Alessandro; Frezza, Fabrizio; Mangini, Fabio; Ricciardella, Nicholas; Simeoni, Patrizio; Tedeschi, Nicola. - In: SCIENTIFIC REPORTS. - ISSN 2045-2322. - 11:1(2021), p. 15928. [10.1038/s41598-021-95080-w]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1653311
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