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Article Dans Une Revue Optics Express Année : 2023

Power transfer efficiency for obstructed wireless links using Bessel beams

Résumé

The power transfer efficiency of a partially obstructed wireless link operating in the Fresnel region is studied in this work. The wireless link consists of two equal apertures, axially aligned, radiating weakly-diffractive beams (truncated Bessel beams). A metallic obstacle is considered along the propagation path of the radiated beam to analyze its impact on the power transfer efficiency with respect to a clear line of sight link. The power transfer efficiency in the obstructed case is derived by resorting to a scattered field formulation. In the proposed approach, the distance between the apertures is considered larger than their radius, which is also bigger than the operating wavelength. A paraxial approximation is then applied to the formulation. Numerical results validate the proposed approach. It appears that the transverse propagation constant of the Bessel Beam and resulting non-diffractive range strongly affects the distance of operation of the wireless link in both the clear and obstructed cases. In addition, we observe how the self-healing property of Bessel beams preserves the efficiency of the partially obstructed link by establishing a resilient link under defined conditions for the propagating beam and size of the obstruction.

Dates et versions

hal-04298899 , version 1 (21-11-2023)

Identifiants

Citer

Ravel Pimenta, Gabriel Soriano, Konstantinos Paschaloudis, Mauro Ettorre, Myriam Zerrad, et al.. Power transfer efficiency for obstructed wireless links using Bessel beams. Optics Express, 2023, 31 (22), pp.35493. ⟨10.1364/OE.499123⟩. ⟨hal-04298899⟩
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