Shapes of resonant element and their arrangement for better performance of reflectarrays

This paper proposes the design method of novel resonant elements with four axial symmetry designed by using the genetic algorithm(GA). Designing a reflectarray, it is desirable for the resonant element to have a low cross-polarization and dual-polarization property, in addition to providing an ideal reflection phase. Then, we verified effectiveness of the proposed elements from the radiation pattern of the designed reflectarray antenna numerically and experimentally.