Synthesis of Sparse Concentric Ring Arrays Based on Fitness-Associated Differential Evolution Algorithm

Figure 9

Result of Example 3. (a) PSLL of 50 independent runs in Example 3. The best PSLL is −28.58 dB, the average PSLL is −28.17 dB, and the variance is 0.084. (b) is the best radiation pattern of all planes, characteristic of excellent symmetry. (c) is the sectional pattern of one single plane. (d) is the optimal distribution of elements.

(a)

(b)

(c)

(d)