Comparative Analysis of Reduction of Side Lobe Level For Concentric Elliptical Array and Cylindrical Elliptical Array Using Differential Evolution
This Paper describes optimal side lobe level of an elliptical cylindrical array for uniform excited isotropic
antennas and non-uniform excited isotropic antennas when compared to concentric elliptical array using differential
evolution optimization. Differential evolution (DE) is a method that optimizes a problem by iteratively trying to improve
a candidate solutionwith regard to a given measure of quality. Such methods are commonly known as met heuristics as they
make few or no assumptions about the problem being optimized and can search very large spaces of candidate solutions. The
differential evolution optimization (DE) is used to determine optimal side lobe level (SLL), by changing the parameters like
number of elements in an array, eccentricity, number of rings, and distance between rings. Simulation results show that the
thinned Elliptical cylindrical antenna side lobe level is less when compare to concentric elliptical antenna and it is reduced
up to -34 db.
Index Terms— Concentric Elliptical, Elliptical Cylindrical, Side Lobe Level, Thinned, Pso.