표 2. | Table 2. 단층 기판과 금속 패턴으로 구성된 메타표면 흡수체의 90 % 흡수 대역폭 | 90 % absorption bandwidths of metasurface absorbers composed with single substrate and pattern.

	Unit-cell size (λ0)	90 % absorption bandwidth	Fractional bandwidth (%)
Fig. 2 in Ref. [1]	0.28	11.57∼11.72 GHz	1.29
Fig. 15 in Ref. [2]	0.17	9.06∼9.14 GHz	0.9
Fig. 4 in Ref. [17]	0.61	4.54∼4.58 THz	0.9
This work	0.75	5.58∼6.05 GHz	8.1