FRACTAL-BASED DESIGN AND FABRICATION OF LOW SIDE LOBE ANTENNA ARRAY

The aim of this work is to design and Metamaterial a compact four element linear array of microstrip patch antennas to be operated at Fixed Sartellite (S-E) and Mobile band. The array is designed in such a manner to direct most of the power in a particular direction by reducing the peak sidelobe level (peak SLL) in its beam pattern. In order to reduce the array size and also to increase its gain, a modified-Cantor square-Metamaterial based design has been employed as an element of the array. The problem of reducing the peak SLL is formulated as an optimization problem with arguments as the inter-elemental spacing and elements excitation. Optimum values are obtained using Differential Evolution (DE) and Chebyshev algorithm. The corporate feed network of the array is designed using the optimum values of the parameters with Binomial weight function.

کلیدواژه ها:

Microstrip patch antenna ، Cantor square Metamaterial ، antenna array ، low sidelobe level ، optimization ، Chebyshev algorithm