International Journal of Antennas and Propagation / 2013 / Article / Tab 2

Research Article

Design of Fully Digital Controlled Shaped Beam Synthesis Using Differential Evolution Algorithm

Table 2

Computed 4-bit amplitudes and 5-bit phases for Case  I of the design problem.

Algorithm Ring numberExcitationElements
1234567891011121314151617181920

DE 2Phase 33.75 180.00 180.00 180.00168.75180.00
Amp0.06250.06250.06250.31250.81251.00000.18750.75000.12500.75000.12500.06250.06250.12500.93751.00001.00000.81250.12500.6875
1Phase 180.00168.75 180.00180.00180.00180.00157.50180.00
Amp0.06251.00001.00000.06251.00000.06251.00001.00000.18750.0625

PSO 2Phase 180.00 56.25 56.25 11.25 146.25 157.50
Amp0.18750.68750.68750.06250.50000.93750.43750.37500.50000.62500.50000.50000.37500.75001.00000.68750.12500.25000.18750.4375
1Phase 22.5033.75 112.5011.2511.2545.00
Amp0.93750.68750.87500.50000.43750.37500.25000.37500.68750.7500

GA 2Phase101.25 135.00 11.25 180.00112.50 11.25 56.25
Amp1.00000.25000.50000.93750.81250.68750.68750.25000.31250.12500.56250.12500.81250.56250.81250.37500.50000.25000.31250.6250
1Phase 11.25 146.2545.00 11.2511.2556.25180.00
Amp0.68750.31250.81250.06250.18750.81250.93750.25000.68750.5000

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