Null Steering Using Reconfigurable Intelligent Surfaces

This paper presents the utilization of Reconfigurable Intelligent Surfaces (RIS) to generate adjustable nulls. The inspiration for this approach arises from the shifting nulls in the radiation pattern of a dipole placed in front of a rectangular patch, which occurs as the patch is laterally moved. The RIS is harnessed to emulate this displacement, accomplished by strategically biasing specific diodes to achieve reconfigurability.