Propagation of two kinds of modes in an array of broadside coupled split ring resonators inserted in the symmetry plane of an X-band rectangular waveguide (This animation and below). The animation of the mode propagating at 2 GHz represents the absolute value of the magnetic field in the left-handed (backward) wave. The cutoff frequency of the hollow waveguide fc=6.5 GHz. Visit http://www.temf.de for more info.
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