Table 1 Comparison of performance of the proposed SE-SMS metamaterial absorber.
References | Year | Substrate material | Structural symmetry | Resonance frequencies (GHz) | Unit cell size | Equivalent circuit analysis | Max. absorption (%) | Cross-polarization Insensitivity | Max. co-polarization insensitivity (°) |
|---|---|---|---|---|---|---|---|---|---|
2017 | FR4 | No | 8.48, 15.4, 17.81 | 9 × 9 mm2 | Not shown | > 95 | No | 60 | |
2017 | FR4 | No | 9.46, 13.90 | 5.5 × 5.5 mm2 | Not shown | > 99 | No | 45 | |
2018 | FR4 | No | 13.78, 15.3 | 19 × 15 mm2 | Shown | > 99 | No | 40 | |
2019 | FR4 | No | 11.56, 12.27, 14.19 | 15 × 12 mm2 | Shown | < 99 | No | 80 | |
2019 | FR4 | No | 8.6, 12.8, 17.3 | 9.2 × 9.2 mm2 | Not shown | 99.9 | No | 90 | |
2019 | FR4 | Yes | 11.31, 14.13, 14.23, 14.69, 17.79, 17.81 | 10 × 10 mm2 | Shown | 98.15 | Yes | 90 | |
2020 | FR4 | Yes | 8.23, 10.33, 14.32, 15.58 | 9.6 × 9.6 mm2 | Not shown | 99.9 | No | 90 | |
2020 | Polyimide film | Yes | 8.5, 13.5, 17 | 8 × 8 mm2 | Not shown | 99 | No | 90 | |
2020 | FR4 | Yes | 11.23, 14.18, 17.37, 19.18 | 9 × 9 mm2 | Shown | 99.13 | Yes | 90 | |
2021 | FR4 | Yes | 8.9, 17.1 | 9.7 × 9.7 mm2 | Not shown | > 80 | No | 90 | |
2021 | FR4 | Yes | 8.96, 9.93, 10.85, 11.9, 12.9, 13.97, 15, 16.21, 17.95, 19.1 | 7.2 × 7.2 mm2 | Shown | 96.3 | No | 60 | |
This work | 2021 | FR4 | Yes | 9.33, 12.83, 13.86, 15.61 | 10 × 10 mm2 | Shown | > 99 | Yes | 180 |
