Table 3 Absorption property of the unit cell with full back plane.

From: Inductively tuned modified split ring resonator based quad band epsilon negative (ENG) with near zero index (NZI) metamaterial for multiband antenna performance enhancement

Peak absorption frequency (f0) (GHz)

(%) absorption

Bandwidth (BW) (MHz)

Quality factor (Q = BW/f0)

3.98

99.6

140

28.4

5.5

95.7%

160

34.4

8.48

78.3%

480

17.6

11.73

99.9%

510

23

13.47

92.7

420

32