3D-PRISE: 3D-Printed Reconfigurable Intelligent Surface Element

Reconfigurable Intelligent Surface (RIS) is a key technology for enhancing the performance of 5G and beyond wireless systems. The widespread deployment of RIS requires scalable and cost-effective fabrication methods. This paper presents the design, fabrication, and experimental validation of a 3D-printed 1-bit Reconfigurable Intelligent Surface Element (3D-PRISE) that leverages the advantages of additive manufacturing. The proposed 3D-PRISE design uses 3D printing to achieve a lowcost RIS element with wide operational bandwidth. The paper provides a comprehensive overview of the 3D-printed dielectric material properties and rigorous experimental validation of the 3D-PRISE performance. The results demonstrate the feasibility of the 3D-printed RIS element, with measured phase shift ensuring the operational bandwidth of 200 MHz. This work illustrates the potential of additive manufacturing to enable scalable and cost-effective deployment of RIS in next-generation wireless systems.