Dataset Information

Real-time programmable metasurface for terahertz multifunctional wave front engineering.

ABSTRACT: Terahertz (THz) technologies have become a focus of research in recent years due to their prominent role in envisioned future communication and sensing systems. One of the key challenges facing the field is the need for tools to enable agile engineering of THz wave fronts. Here, we describe a reconfigurable metasurface based on GaN technology with an array-of-subarrays architecture. This subwavelength-spaced array, under the control of a 1-bit digital coding sequence, can switch between an enormous range of possible configurations, providing facile access to nearly arbitrary wave front control for signals near 0.34 THz. We demonstrate wide-angle beam scanning with 1° of angular precision over 70 GHz of bandwidth, as well as the generation of multi-beam and diffuse wave fronts, with a switching speed up to 100 MHz. This device, offering the ability to rapidly reconfigure a propagating wave front for beam-forming or diffusively scattered wide-angle coverage of a scene, will open new realms of possibilities in sensing, imaging, and networking.

SUBMITTER: Lan F

PROVIDER: S-EPMC10406829 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Real-time programmable metasurface for terahertz multifunctional wave front engineering.

Lan Feng F Wang Luyang L Zeng Hongxin H Liang Shixiong S Song Tianyang T Liu Wenxin W Mazumder Pinaki P Yang Ziqiang Z Zhang Yaxin Y Mittleman Daniel M DM

Light, science & applications 20230807 1

Terahertz (THz) technologies have become a focus of research in recent years due to their prominent role in envisioned future communication and sensing systems. One of the key challenges facing the field is the need for tools to enable agile engineering of THz wave fronts. Here, we describe a reconfigurable metasurface based on GaN technology with an array-of-subarrays architecture. This subwavelength-spaced array, under the control of a 1-bit digital coding sequence, can switch between an enorm ...[more]

PMID: 37550383

Similar Datasets

Project description:The evolution of programmable metasurfaces has yielded many exciting electromagnetic (EM) phenomena and applications in both communities of physical and information sciences. Programmable metasurfaces, also known as reconfigurable intelligent surfaces or intelligent reflecting surfaces in wireless communications, have played important roles in enhancing signal coverage and transmission quality, and in building an artificially controlled communication environment. However, most of the realistic implementations are designed in the sub-6G band with a small array scale and 1-bit phase control ability, making the performance improvement not marvelous compared with the traditional solutions. Here, we propose a large-scale 2-bit millimeter-wave programmable metasurface to build an integrated smart base station framework for 6G communications. The meta-array is composed of 30 × 30 meta-elements, each with two embedded positive-intrinsic-negative (PIN) diodes. A dish-cone antenna is integrated with the metasurface to serve as the feeding source. A control board is designed to autonomously switch the working states of all of the 1800 PIN diodes based on a field-programmable gate array, enabling the individual adjustment of the EM responses of all meta-elements in the array. Through the deliberate arrangement of phase distribution on the surface, the array can undergo reconfiguration to achieve the desired EM functionalities. We take the programmable metasurface as the core to assist a millimeter-wave base station and validate its good performance for wireless communications in a realistic indoor scenario. Subsequently, we build a four-stream wireless communication scenario using four 30 × 30 arrays and demonstrate smart multi-user information transmissions with different positions. This work provides great potential for programmable metasurfaces to aid the development of novel and intelligent millimeter-wave base stations, offering valuable insights for advancing next-generation mobile communications.

Dataset Information

Real-time programmable metasurface for terahertz multifunctional wave front engineering.

Publications

Real-time programmable metasurface for terahertz multifunctional wave front engineering.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets