Table 3 Comparison of the proposed SSPP LWA with the state-of-the-art studies.
References | f0 (GHz) | Unit cell | Polarization | Aperture length | Aperture width | Peak gain (dBi) | SLL | Scanning range | Rad. efficiency (%) | AR |
|---|---|---|---|---|---|---|---|---|---|---|
9.3 | Isotropic | Linear | \(15\text{.}9{\lambda }_{g}\) | \(0\text{.}31{\lambda }_{g}\) | 12.2 | − 9 dB | 20° | 90 | – | |
9 | Isotropic | Circular | \(18\text{.}36{\lambda }_{g}\) | \(0\text{.}81{\lambda }_{g}\) | 12 | − 10 dB | 20° | 77 | 13.9% | |
10 | Isotropic | Linear & Circular | \(24\text{.}9{\lambda }_{g}\) | \(0\text{.}25{\lambda }_{g}\) | 9 | − 9 dB & − 6 dB | 10° | 80 | 4% | |
18 | Anisotropic | Circular | \(11\text{.3}9{\lambda }_{g}\) | \(0\text{.}65{\lambda }_{g}\) | 11.3 | − 10 dB | 20° | 86 | 40% | |
This work | 18 | Anisotropic | Circular | \(10\text{.}72{\lambda }_{g}\) | \(2\text{.}67{\lambda }_{g}\) | 19.7 | − 12.1 dB | 18° | 93 | 11.1% |
