Synthesis of Thinned Planar Concentric Circular Antenna Arrays Using a Modified Artificial Bee Colony Algorithm

Table 5

Results obtained by different methods with the interelement arc spacing (d_c) of each ring is made uniform and the same but is not fixed.

Array	PSLL (dB)	BW (deg)	dc	Switched off elements
Fully array	−17.37	4.5	0.5λ	0
BBO [16]	−26.60	4.4	0.5296λ	230
FA [1]	−30.19	4.4	0.5732λ	226
SOS [3, 16]	−31.18		0.5903λ	232
MABC	−33.62	4.5	0.5801λ	236