Improving phase continuity in electromagnetic gradient surface for large reflecting structures

In this paper, the method of inserting the PEC between conventional EGSs is proposed for a large reflecting structure applications. This method was designed to compensate the unrealizable reflection phase due to limitation of phase range roughly and easily. In the 2 periods EGSs using that method, reflection angle is most similar to intended value of conventional EGS which is designed to have a reflection angle of 30° for a normal incident plane wave. The design is verified in a simulation.