Abstract
AbstractExisting research on reconfigurable intelligent surfaces (RIS) has mainly focused on narrowband applications due to limitations in programmable metasurfaces and field prototype realization. This letter introduces a wideband RIS meta‐atom consisting of a single‐layer frequency selective surface supported by a dogbone‐shaped patch, ensuring a stable linear phase interval around the resonant frequency. A RIS communication prototype is constructed to evaluate its phase bandwidth upper limit and fundamental bandwidth properties. An equivalent circuit model is derived to predesign the wideband RIS meta‐atom, controlled by a varactor, and experimental validation in an anechoic chamber confirms its large bandwidth. Additionally, a wideband RIS‐assisted self‐contained prototype is demonstrated to illustrate the bandwidth characteristics and link gain enhancement at a system level. Test results indicate a researched bandwidth of up to 19.65%, with the 1‐bit RIS board achieving a 3‐dB gain bandwidth of about 8.62%.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
