Ultrasmall Dual-Band Metamaterial Antennas Based on Asymmetrical Hybrid Resonators

Table 2

Comparison of antenna performances between the literature and this work.

References	Antenna size ()	Operating frequency (GHz)	Bandwidth (−10 dB)	Measured gain (dB)
[6]		3.5	3.77%	4.6
[10]		2.58	4.60%	2.98
[11]		3.52	—	4.5
[12]		1.5/2.4/3.5	2.63%/3.28%/6.44%	4.93/2.85/5.12
[13]		1.81/2.2	—/~2%	4.5/6.8
Pro.I		3.5/5.25	1.46%/0.61%	6.2/6.1
Pro.II		2.4/3.5	1.04%/1.43%	2.23/5.72