Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Comparison of optimization results between Chebyshev distribution and WOA
| amplitude | amplitude | ||||
|---|---|---|---|---|---|
| Element number | Chebyshev | WOA | Element number | Chebyshev | WOA |
| 1 | 0.2271 | 0.2307 | 16 | 1 | 1 |
| 2 | 0.238 | 0.2119 | 17 | 0.9965 | 0.9823 |
| 3 | 0.2241 | 0.2605 | 18 | 0.9561 | 0.9644 |
| 4 | 0.353 | 0.2993 | 19 | 0.9158 | 0.8965 |
| 5 | 0.4001 | 0.3938 | 20 | 0.8849 | 0.8608 |
| 6 | 0.4593 | 0.4684 | 21 | 0.7747 | 0.7952 |
| 7 | 0.536 | 0.5472 | 22 | 0.7251 | 0.7009 |
| 8 | 0.6153 | 0.637 | 23 | 0.6153 | 0.637 |
| 9 | 0.7251 | 0.7009 | 24 | 0.536 | 0.5472 |
| 10 | 0.7747 | 0.7952 | 25 | 0.4593 | 0.4684 |
| 11 | 0.8849 | 0.8608 | 26 | 0.4001 | 0.3938 |
| 12 | 0.9158 | 0.8965 | 27 | 0.353 | 0.2993 |
| 13 | 0.9561 | 0.9644 | 28 | 0.2241 | 0.2605 |
| 14 | 0.9965 | 0.9823 | 29 | 0.238 | 0.2119 |
| 15 | 1 | 1 | 30 | 0.2271 | 0.2307 |