Strong beaming of microwave surface waves with complementary split-ring-resonator arrays

被引：0
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作者：
Emily Young
Joseph A. Dockrey
Alastair P. Hibbins
J. Roy Sambles
Christopher R. Lawrence
机构：
[1] University of Exeter,Department of Physics and Astronomy
[2] QinetiQ,undefined
[3] Cody Technology Park,undefined
来源：
Scientific Reports | / 8卷
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摘要：
A thin copper sheet, populated by an array of complementary split ring resonators, presents strong surface wave beaming in orthogonal directions at two distinct frequencies. This simple array is significantly thinner than existing single frequency beaming surfaces. The observed beaming frequencies are associated with the two lowest resonance modes of the split rings, and the beams are subwavelength in width and approximately non-diverging. The beaming is analysed through comparison of near-field scans of the surface-normal electric fields with numerical simulations.
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