Research Article
Wideband and High-Efficiency SIW Cavity-Backed Magneto-Electric Dipole Antenna Array
Table 5
Comparison to other antenna elements/arrays.
| Ref. | Antenna type | Elements | Total size (λ0) | Impedance bandwidth (%) | 3-dB gain bandwidth (%) | Max gain (dBi) | Max aperture efficiency (%) |
| [19] | Slot array fed by hollow waveguide | 16 × 16 | 15.4 × 15.6 × 0.6 | 8.3 | 8.3 | 33 | 83.8 | [20] | Slot array fed by metallic ridge gap waveguide | 16 × 16 | 16.2 × 16.2 × 2 | 16 | 17.9 | 32.5 | 81.4 | [21] | ME dipole array fed by printed ridge gap waveguide | 4 × 4 | 3.5 × 3.4 × 0.28 | 16.5 | 16.5 | 21.2 | 90 | [26] | SIW-fed ME dipole array | 8 × 8 | 8.47 × 10.96 × 0.847 | 16.3 | 16.3 | 26.7 | 86.1 | [27] | SIW-fed cavity-backed patch | 16 × 16 | 15.6 × 17.4 × 0.85 | 15.3 | 16.1 | 30.1 | 80.4 | [28] | SIW-fed slot array | 4 × 4 | 8.82 × 5.09 × 0.8 | 20.5 | 20.5 | 19.4 | 79.3 | [29] | SIW-fed ME dipole array | 8 × 8 | 7.52 × 8.36 × 0.48 | 18.2 | 18.2 | 26.1 | N/A | [30] | SIW-fed slot array | 16 × 16 | 12 × 12.6 × 0.13 | 19.2 | 15 | 29.1 | 42.8 | [31] | SIW cavity-backed slot array | 8 × 8 | 10.56 × 10.56 × 0.51 | 17.1 | 13.1 | 22.3 | 46 | [32] | SIW cavity-backed slot array | 4 × 4 | N/A | 26.5 | 26.5 | 20 | N/A | [33] | SIW-fed ME dipole array | 4 × 4 | 4.3 × 4.3 × 0.51 | 26.7 | 26.7 | 21.5 | 87.7 | This work | SIW-fed ME dipole array | 4 × 4 | 3.58 × 3.96 × 0.3 | 30 | 30 | 20.9 | 94 |
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