Table 2 Performance comparison of previous CP antenna arrays.
Refs | Antenna type | Array size | Freq. (GHz) | Bandwidth | Overall size (\(\varvec{\lambda ^{3}}\)) | Peak gain (dBic) | XPD (dB) | Design complexity |
|---|---|---|---|---|---|---|---|---|
SIC | 4\(\times\)4 | 57–72.3 | 23.8% | 4.42\(\times\)8.48\(\times\)0.69 | 20.5 | <-15 | high | |
Metallic Cavity | 1\(\times\)3 | 5.8–7.4 | 24.24% | 1.2\(\times\)0.6\(\times\)0.3 | 9.9 | <-18 | med to high | |
SIC | 8\(\times\)8 | 26.20–32.14 | 20.36% | 6.68\(\times\)6.68\(\times\)0.27 | 26.1 | <-18 | low to med | |
Slot Antenna | 2\(\times\)2 | 3.82–4.44 | 15.01% | 1.30\(\times\)1.30\(\times\)0.57 | 11.8 | <-15 | med | |
SIC | 2\(\times\)2 | 27.92–39.93 | 35.40% | 3.08\(\times\)3.74\(\times\)0.18 | 11.7 | <-15 | high | |
Waveguide Antenna | 4\(\times\)4 | 19–31 | 48% | 2.3\(\times\)2.5\(\times\)1.58 | 21.9 | <-18 | high | |
SIC | 2\(\times\)2 | 145.7–161.7 | 10.4% | 1.05\(\times\)1.05\(\times\)0.31 | 15.1 | <-15 | high | |
SIC | 2\(\times\)2 | 3.43–3.64 | 5.94% | 0.74\(\times\)1.49\(\times\)0.035 | 13.81 | <-18 | med | |
Our | SIC | 2\(\times\)2 | 23.45–32.02 | 30.89% | 2.03\(\times\)2.03\(\times\)0.32 | 12.54 | <-25 | med to high |
