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Boundary Conditions: Lossless Lines01:21

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Consider a single-phase, two-wire, lossless transmission line terminated by an impedance at the receiving end and a source with Thevenin voltage and impedance at the sending end. The line, with length, has a surge impedance and wave velocity determined by the line's inductance and capacitance.
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    Area of Science:

    • Metamaterials and Nanophotonics
    • Electromagnetics and Wave Phenomena

    Background:

    • Metasurfaces offer unique control over electromagnetic waves.
    • Traditional scattering phenomena involve reflection or transmission.
    • Lossless systems present challenges in energy manipulation.

    Purpose of the Study:

    • To investigate an anomalous scattering phenomenon in lossless metasurfaces.
    • To demonstrate a zero-scattering condition where energy is stored and released.
    • To explore the potential of metasurfaces for dynamic energy absorption and storage.

    Main Methods:

    • Analytical derivation of excitation conditions for zero scattering.
    • Full-wave simulations to verify system response.
    • Characterization of metasurface properties enabling the phenomenon.

    Main Results:

    • Demonstrated a lossless system exhibiting anomalous zero scattering.
    • Identified specific excitation conditions for energy storage and delayed release.
    • Confirmed the critical role of the metasurface in achieving zero scattering.

    Conclusions:

    • Metasurface-based systems can achieve a zero-scattering state by storing electromagnetic energy.
    • This phenomenon paves the way for designing virtual absorbers with tunable energy absorption, storage, and release capabilities.
    • The findings offer practical feasibility for advanced electromagnetic energy management applications.