Table 2 Polarization incident angle and metamaterial properties of the proposed MA.

From: Polarization insensitivity characterization of dual-band perfect metamaterial absorber for K band sensing applications

EM Wave mode

Polarization angle

Resonant frequency GHz

Absorption bandwidth

Permittivity

Permeability

Refractive Index

Maximum absorption

TE

21.6

0.4

10.31

− 19.54

− 4.33

99.99%

24.04

0.76

− 6.60

− 11.35

− 0.0034

45°

21.6

0.4

15.79

− 24.44

− 4.34

24.04

0.76

− 6.80

− 9.98

− 0.004

90°

21.6

0.4

11.52

− 21.12

− 4.33

24.04

0.76

− 10.38

− 5.75

− 0.0064

TM

21.6

0.4

21.9

− 11.40

− .4.33

99.99%

24.04

0.76

− 11.88

− 15.30

− 0.005

45°

21.6

0.4

13.27

− 26.85

− 4.32

24.04

0.76

− 19.13

− 7.55

− 0.006

90°

21.6

0.4

9.9

− 20.03

− 4.33

24.04

0.76

− 17.05

− 9.87

− 0.006