Multiband patch antenna with perturbation elements generated by genetic algorithm

A multibandband patch antenna design based on the Genetic Algorithm (GA) control of the pseudorandom generation of the patch topology in a grid of conductive cells is presented. GA operates on subdomains of the basic grid forming an original rectangular patch and creates meander edge notches to modify the radiator for excitation of higher order modes with the required radiation properties. Matlab/IE3D software environment has been used for the design of optimization loop. Results of 2.4/5.8 GHz dualband patch antenna design are presented. The principle of the multiband behavior is further explained via a description of vector surface current distribution of operational modes.