Ref. | Profile (λlow) | Frequency Ratio | Peak Gain (dBic) | Impedance BW (%) | 3 dB AR BW (%) | Aperture Efficiency (%) |
[19] | 0.05/0.08 | 1.5 | 5.1/5.4 | 4.5/10 | N.A. | N.A. |
[20] | Single-layer Substrate | 1.4 | 17.5/18.3 | 8.3/18.9 | 14.2/14.9 | N.A. |
[21] | 5.7/7 | 1.18 | 23.9/24.5 | 7.5/7 | 8.3/7.04 | 32.3/28.9 |
[22] | 0.05/0.07 | 1.6 | 8.6/6.4 | 4.5/2.7 | 1.04/0.75 | 88.3/88.3 |
[23] | 0.6/0.1 | 1.5 | 17.7/20.9 | 1.5/5.7 | 2.5/1.7 | 81.4/77 |
[24] | 14.6/23 | 1.5 | 27.0/28.5 | 14.2/11.1 | 25/16.7 | 34.9/35.3 |
This work | 2.6/4.2 | 1.625 | 19.4/22.8 | 17.51/7.94 | 10.9/8.4 | 63.2/65.6 |