Three-dimensional focusing of broadband microwave beams by a layered photonic structure |
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Authors: | Monzon C Loschialpo P Smith D Rachford F Moore P Forester D W |
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Institution: | SFA/NRL, Largo, Maryland 20774, USA. |
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Abstract: | Experiment and analysis confirm that a finite layered structure involving glass layers with broad strip metallizations can be characterized by broadband negative refractionlike behavior in three dimensions. The structure is further characterized as capable of 2:1 broadband focusing of near field radiation, with verified experimental focusing bandwidth of 1:5:1. This represents a significant improvement over the two-dimensional and narrow band focusing operation of current implementations of left-handed media. An electronic reconfigurable version is identified together with potential applications. |
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