Table 9 Change of absorption peaks and frequencies with the different substrate material.

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 material

Resonance frequency (GHz)

Absorption peaks (%)

Covering bands

FR-4

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-

Rogers RT5880

4.91, 7.33, 10.89, 14.34, 17.29

35.91, 16.67, 16.28, 21.28, 73.52

C-, X-, and Ku-

Rogers RO 4350B

4.16, 6.17, 9.15, 11.82, 14.64, 17.248

66.94, 36.67, 35.15, 49.43, 42.67, 73.79

C-, X-, and Ku-

Rogers RO3010

2.62, 3.81, 5.68, 7.09, 10.37, 10.70, 15.49, 17.69

86.97, 60.75, 59.12, 58.14, 94.28, 96.42, 74.66, 97.99

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

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