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. 2022 Apr 12;12:6096. doi: 10.1038/s41598-022-09991-3

Figure 3.

Figure 3

Reflectance, transmittance and absorption spectrums of proposed (a) unit-cell and (b) 2-D periodic array (3 × 3 unit cells) broadband antenna under normal incidence of plane wave: The top metal (Ni) and substrate (SU8) are patterned and shaped in a groove like structure. The inset images are the magnified view of the transmittance spectrum.