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Analysis of the far-field radiation pattern by a current loop in hyperbolic material.

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    This study examines radiation from current loops in hyperbolic materials, revealing a strong dependence on loop size, unlike in dielectric materials. Orientation relative to the optic axis significantly alters radiation patterns.

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    Area of Science:

    • Electromagnetism
    • Materials Science
    • Condensed Matter Physics

    Background:

    • Hyperbolic materials exhibit unique electromagnetic properties.
    • Understanding radiation from current loops is crucial for device applications.
    • Previous studies often focused on simpler dielectric materials.

    Purpose of the Study:

    • Investigate radiation characteristics of a current loop in hyperbolic materials.
    • Analyze the influence of loop orientation relative to the optic axis.
    • Compare radiation patterns with those in uniaxial dielectric materials.

    Main Methods:

    • Derivation of closed-form expressions for radiation.
    • Numerical simulations to analyze ordinary and extraordinary waves.
    • Examination of loop axis alignment parallel and perpendicular to the optic axis.

    Main Results:

    • Radiation patterns show a strong dependence on loop size in hyperbolic materials.
    • Orientation of the loop axis significantly impacts radiation.
    • Distinct changes in radiation patterns occur when the optic axis is perpendicular to the loop axis.

    Conclusions:

    • Loop size plays a critical role in radiation from hyperbolic materials.
    • The orientation-dependent behavior offers new avenues for controlling electromagnetic radiation.
    • Findings provide insights for designing advanced electromagnetic devices.