1. Directional emissions achieved with anomalous reflection phases of metamaterials.
- Author
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Ding, Kun, Jiang, Tao, Hao, Jiaming, Ran, Lixin, and Zhou, Lei
- Subjects
ANTENNAS (Electronics) ,METAMATERIALS ,OPTICAL reflection ,ELECTROMAGNETIC measurements ,FINITE differences ,TIME-domain analysis - Abstract
For a small antenna placed on a metamaterial ground plane vertically or horizontally, we analyzed the conditions under which the antenna emissions are highly directional. We found through finite-difference time-domain (FDTD) simulations that a previously discovered directional emission phenomenon can be explained by our theory for the horizontal antenna case. For the vertical antenna case, we employed FDTD simulations to design a realistic metamaterial ground plane with desired reflection phase properties, and performed microwave experiments to verify its ability to support directional emissions. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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