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Fig. 3
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Bistatic RCS characteristics of the vortex metasurfaces. (a, c) Bistatic RCS patterns at an azimuth angle of φ = 0°. (b, d) Three-dimensional bistatic RCS distributions at 7.9 GHz for the l = −3 MLCGP metasurface and at 8.1 GHz for the l = −5 MLCGP metasurface.
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