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首页> 外文期刊>Physical review >Directive Emission From Defect-free Dodecagonal Photonic Quasicrystals: A Leaky Wave Characterization
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Directive Emission From Defect-free Dodecagonal Photonic Quasicrystals: A Leaky Wave Characterization

机译:无缺陷的十二边形光子准晶体的定向发射:泄漏波表征

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摘要

In this paper, we study the radiation from embedded sources in two-dimensional finite-size "photonic-quasicrystal" (PQC) slabs made of dielectric rods arranged according to a 12-fold symmetric aperiodic tiling. The results from our investigation, based on rigorous full-wave simulations, show the possibility of achieving broadside radiation at multiple frequencies, with high directivity (e.g., 15 dB) and low sidelobes (e.g., -12 dB). We also show that leaky waves are supported by a PQC slab and that the beamwidth is directly proportional to the leaky wave attenuation constant, which provides a physically incisive interpretation of the observed radiation characteristics.
机译:在本文中,我们研究了由按12倍对称非周期性平铺排列的介电棒制成的二维有限尺寸“光子-准晶体”(PQC)平板中来自嵌入式源的辐射。根据严格的全波模拟,我们的调查结果表明,可以实现具有高方向性(例如15 dB)和低旁瓣(例如-12 dB)的多个频率的宽边辐射。我们还表明,泄漏波由PQC平板支撑,并且束宽与泄漏波衰减常数成正比,这为观察到的辐射特性提供了物理上的精确解释。

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