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