Research Article
Synthesis of Uniformly Excited Concentric Ring Arrays by the Strategy of Partial Density Tapering and the Algorithm of Differential Evolution
Table 3
Comparative results by using different methods.
| | N | Methods | PSL (dB) | D (dB) | 3dB beamwidth |
| 4.70 | 142 | GA [10] | −27.82 | 28.89 | ― | 4.70 | MGA [11] | −28.33 | ― | ― | 4.26 | PDT-DE | −29.95 | 28.19 | 0.128 |
| 4.5 | 183 | GA [10] | −25.58 | 28.5 | ― | 4.5 | PDT-DE | −27.86 | 28.39 | 0.115 |
| 4.98 | 201 | MGA [11] | −29.13 | ― | ― | 5.0 | IFT-DE [18] | −24.21 | ― | ― | 5.0 | PDT-DE | −30.34 | 29.30 | 0.108 |
| 10 | 623 | IIGA [12] | −32.44 | 34.75 | 0.0569 | 10 | PDT-DE | −33.60 | 34.33 | 0.06 |
| 15 | 1302 | IIGA [12] | −32.96 | 37.49 | 0.0388 | 14.64 | PDT-DE | −34.63 | 37.38 | 0.04 |
| 20 | 2256 | HS [16] | −34.08 | 39.66 | 0.0296 | 20 | PDT-DE | −36.33 | 39.54 | 0.032 |
| 25 | 3465 | IIGA [12] | −33.64 | 41.37 | 0.0236 | 24.78 | PDT-DE | −35.58 | 41.19 | 0.024 |
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