Table 1 Parameter values from cst simulation at the resonance frequencies for all co-polarization angles.

From: Angle-insensitive co-polarized metamaterial absorber based on equivalent circuit analysis for dual band WiFi applications

Parametric output

At 2.4 GHz

At 5 GHz

Co-polarization angles

Absorption

91.9%

97.35%

At all theta (0, 30, 60 & 90 degrees) polarization and phi (0, 45, 90, 135 & 180 degrees) polarization

Permittivity

− 1.12

0.099

Permeability

0.045

0.19

Refractive Index

(DRI method)

− 0.275

0.15

Refractive Index

(NRW method)

− 0.275

− 0.15

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