Table 2.
Comparison of configurations regarding antenna parameters.
| Antenna Parameters | Vivaldi only | Vivaldi + CRLH | Vivaldi + Reflector | Vivaldi + CRLH + Reflector |
|---|---|---|---|---|
| (Baseline) | (Full design) | |||
| Frequency range (GHz) | 15.2–17.1 | 15–17.6 | 15.4–18 | 14.8–16, 16.4–18 |
| BW (GHz) | 1.9 | 2.6 | 2.6 | 2.8 |
| Gain (dBi) | 5.9 @ 15.9 GHz | 13.2 @ 15.4 GHz | 13.7 @ 16.8 GHz | 14.5 @ 15.4 GHz |
| SLL (dB) | -7.7 | -9.8 | -9.4 | -10.6 |
| BLL (dB) | -2.4 | -0.9 | -1 | -2.6 |
| Radiation efficiency (%) | 98 | 92 | 98 | 90 |
| Front-to-back ratio (dB) | 8.3 | 14.1 | 13.6 | 17.1 |
| Angular width (3 dB) | 76.1
|
22.2
|
27.8
|
21.2
|