Table 7 Effect of substrate size on absorption peaks, resonance frequencies, and covering bands.

From: Penta band single negative meta-atom absorber designed on square enclosed star-shaped modified split ring resonator for S-, C-, X- and Ku- bands microwave applications

Substrate size (mm2)

Resonance frequency (GHz)

Maximum absorption (%)

Covering bands

8.8 × 8.8

3.54, 5.20, 7.76, 9.95, 14.53

97.06, 93.47, 90.25, 99.81, 95.32

S-, C-, X-, and Ku-

8 × 8

3.80, 5.65, 8.45, 10.82, 15.92

97.87, 93.65, 92.67, 99.95, 99.86

S-, C-, X-, and Ku-

7.2 × 7.2

4.27, 6.30, 9.39, 12.05, 17.84

97.49, 93.09, 90.67, 99.97, 99.52

C-, X-, and Ku-

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