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arXiv · 0711.3097

Directive Emission from Defect-Free Dodecagonal Photonic Quasicrystals: A Leaky-Wave Characterization

Alessandro Micco·Vincenzo Galdi·Filippo Capolino·Alessandro Della Villa·Vincenzo Pierro·Stefan Enoch·Gerard Tayeb
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Abstract

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.

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Alessandro Micco, Vincenzo Galdi, Filippo Capolino, Alessandro Della Villa, Vincenzo Pierro, Stefan Enoch, Gerard Tayeb. 2009-01-20. Directive Emission from Defect-Free Dodecagonal Photonic Quasicrystals: A Leaky-Wave Characterization. https://arxiv.org/abs/0711.3097

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