AI 中文总结
研究利用克尔效应设计可切换选择性后向散射调制的反射散射体，通过介电壳和内部金属元件及PIN二极管实现，该设计在背向散射方向有强幅度调制，有望防范背向散射调制易被窃听的缺陷。
AI 中文摘要
我们设计了一种仅在背向散射方向工作的反射散射体，利用克尔效应调制。克尔效应是散射物体的共振模式在背向散射方向产生完全相消干涉的现象。我们的设计由介电壳和内部金属元件组成，为具有角度稳定性的克尔干涉提供所需的偶极贡献。通过集成PIN二极管，得到了一个在背向散射方向表现出强幅度调制而在其他双基地角度较弱的散射体。背向散射调制是连接日常物体的关键技术，但易受窃听影响，本文提出的装置可能有助于防范此类缺陷。
英文摘要
We design a reflective scatterer that operates only in the backscatter direction using modulation of the Kerker effect. This being a phenomena where the resonant modes of a scattering object produce total destructive interference in the backscatter direction. Our design consists of a dielectric shell and an interior metal element that provide the required dipolar contributions for Kerker interference with angular stability. By incorporating a PIN diode, we obtain a scatterer that exhibits strong amplitude modulation in the backscattering direction that is weaker at other bistatic angles. Backscatter modulation is a key technology to connect everyday objects but can be vulnerable to eavesdropping, the device presented in this work may help guard against such flaws.
Comments10 pages, 6 figures
