Please use this identifier to cite or link to this item: https://doi.org/10.1364/JOSAA.29.000426
Title: Broadband microwave Luneburg lens made of gradient index metamaterials
Authors: Loo, Y.L.
Yang, Y.
Wang, N.
Ma, Y.G. 
Ong, C.K. 
Issue Date: Apr-2012
Citation: Loo, Y.L., Yang, Y., Wang, N., Ma, Y.G., Ong, C.K. (2012-04). Broadband microwave Luneburg lens made of gradient index metamaterials. Journal of the Optical Society of America A: Optics and Image Science, and Vision 29 (4) : 426-430. ScholarBank@NUS Repository. https://doi.org/10.1364/JOSAA.29.000426
Abstract: Luneburg lenses are able to form perfect focus that is free of aberration. Because of the varying refractive index throughout the lens, incoming electromagnetic waves can travel in a curved path and be guided to focus at the back of the lens. The implementation of Luneburg lenses is often difficult due to the challenges in creating a medium with varying refractive index using normal materials. This problem can be overcome with the use of gradient index metamaterials. We report a two dimensional Luneburg lens made of gradient index metamaterials. It consists of 17 concentric shells with etched patterns on a printed circuit board working in microwave X band frequency. The broad properties of the Luneburg lens are then discussed. © 2012 Optical Society of America.
Source Title: Journal of the Optical Society of America A: Optics and Image Science, and Vision
URI: http://scholarbank.nus.edu.sg/handle/10635/95902
ISSN: 10847529
DOI: 10.1364/JOSAA.29.000426
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