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Power transfer efficiency for obstructed wireless links using Bessel beams.

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    This study examines wireless power transfer efficiency in obstructed Fresnel region links using Bessel beams. Bessel beams

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    Area of Science:

    • Wireless power transfer
    • Optics
    • Electromagnetics

    Background:

    • Wireless power transfer (WPT) systems often face efficiency losses due to obstructions.
    • Maintaining stable power transfer in non-ideal conditions is crucial for practical WPT applications.
    • Bessel beams offer unique propagation characteristics beneficial for WPT.

    Purpose of the Study:

    • To investigate the power transfer efficiency of a partially obstructed wireless link.
    • To analyze the impact of a metallic obstacle on link efficiency in the Fresnel region.
    • To explore the role of Bessel beam properties in mitigating obstruction effects.

    Main Methods:

    • Modeling a wireless link with two axially aligned apertures radiating truncated Bessel beams.
    • Employing a scattered field formulation to derive power transfer efficiency in obstructed scenarios.
    • Utilizing paraxial approximation for analysis with aperture separation greater than radius and wavelength.

    Main Results:

    • The transverse propagation constant and non-diffractive range of Bessel beams significantly influence link operational distance.
    • The self-healing property of Bessel beams helps preserve power transfer efficiency in partially obstructed links.
    • Obstruction size and beam parameters determine the resilience of the wireless link.

    Conclusions:

    • Bessel beams demonstrate potential for robust wireless power transfer in the presence of partial obstructions.
    • Link efficiency is tunable by adjusting Bessel beam parameters and considering obstruction characteristics.
    • The findings provide insights for designing resilient wireless power transfer systems.