Hybrid Differential Evolution with Biogeography-Based Optimization for Design of a Reconfigurable Antenna Array with Discrete Phase Shifters

Table 4

Optimum results of Experimental I and Experiment II with ADR.

Element Number	Experiment I		Experiment I after quantization		Expt-II
	Amplitude	Phase (deg.)	Amplitude	Phase (deg.)	Amplitude	Phase (deg.)
1/20	0.2282	−12.9749	0.2282	−8.5714	0.2240	180.0000
2/19	0.2282	−24.8762	0.2282	−20.0000	0.2240	−151.4286
3/18	0.2515	−47.4456	0.2515	−42.8571	0.2421	180.0000
4/17	0.3693	−66.2569	0.3693	−65.7143	0.3678	−88.5714
5/16	0.5090	−77.2805	0.5090	−77.1429	0.4881	77.1429
6/15	0.5880	−100.4655	0.5880	−100.0000	0.5853	71.4286
7/14	0.7815	105.7039	0.7815	111.4286	0.7532	−105.7143
8/13	0.8253	−23.9289	0.8253	−20.0000	0.8153	94.2857
9/12	0.9633	19.5264	0.9633	20.0000	0.9352	−122.8571
10/11	0.9771	−89.8865	0.9771	−88.5714	0.9568	128.5714
ADR	4.28		4.35		4.27
Fitness value	0.08		19.9099		0.09