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 ...
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.
