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Configuration in 3D of the proposed patch antenna.
-parameter values of the proposed antenna with different gap widths. (a) Computed values for metamaterial antenna and conventional patch. (b) Measured and computed values for metamaterial antennas.
(a) Top and (b) bottom views of a fabricated patch antenna.
(a) Measured gain and (b) simulated VSWR of proposed antenna with a gap of 0.4 mm. Shaded area shows the working band.
Computed 3D radiation patterns at (a) 6.66 GHz and (b) 7.77 GHz, respectively.
Measured radiation patterns of copolarization (solid line) and cross-polarization (dotted line) (a) at 6.66 GHz in the -plane; (b) at 7.77 GHz in the -plane; (c) at 6.66 GHz in the -plane; and (d) at 7.77 GHz and in the -plane, respectively.
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