Tissue

Density ρ (Kg/m³)

Conductivity σ (S/m)

Permittivity

900 MHz

1800 MHz

900 MHz

1800 MHz

Skin

1100

0.87

1.18

41.4

38.9

Fat

920

0.051

0.078

5.46

5.34

Bone (Skull)

1850

0.14

0.28

12.45

11.8

Dura

1050

0.96

1.32

44.4

42.9

CSF

1060

2.41

2.92

68.7

67.2

Brain

1030

0.77

1.15

45.8

43.5