Soft Computing Techniques for Mutual Coupling Reduction in Metamaterial Antenna Array

Table 1

Comparison of PSO and BFO for structural optimization of double ring square SRR at a particular desired frequency.

Optimization techniques	Accuracy (𝑓err)	Gap between rings 𝑑 (in mm)	Width of rings 𝑤 (in mm)	Length 𝑎 (in mm)	Execution time (in seconds)
BFO	0.0071	0.30	0.21	4.90	10.51
PSO	0.000002	0.14	0.38	4.22	1.02