Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications
Summary: This article investigates the unexplored potentials of vortices or orbital angular momentum (OAM) beams using the low-cost and high-gain dielectric reflectarray antennas (RAs) at the terahertz (THz) band. It proposes a paradigm to enable 3D beam-steering or OAM multiplexing by a single stru...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-08-01
|
| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S258900422200997X |
| _version_ | 1828788824189173760 |
|---|---|
| author | Ali Ali Mohsen Khalily Tim Brown Rahim Tafazolli |
| author_facet | Ali Ali Mohsen Khalily Tim Brown Rahim Tafazolli |
| author_sort | Ali Ali |
| collection | DOAJ |
| description | Summary: This article investigates the unexplored potentials of vortices or orbital angular momentum (OAM) beams using the low-cost and high-gain dielectric reflectarray antennas (RAs) at the terahertz (THz) band. It proposes a paradigm to enable 3D beam-steering or OAM multiplexing by a single structure via tilted OAM beams. That, in turn, requires reaching the maximal attainable angles either to send multiple beams to different receivers or to focus the OAM beams of different modes in a desired direction. For this reason, two concepts are addressed in this work: (i). generating a single 3D steered OAM beam and (ii) producing multiple off-centered OAM beams with different modes. A volumetric unit cell is adopted to be accurately tuned through the aperture to steer the generated beams towards the desired direction(s). The proposed paradigm can be utilized to produce RAs with beam-steering or OAM multiplexing capabilities as candidates for THz indoor communications. |
| first_indexed | 2024-12-12T01:00:57Z |
| format | Article |
| id | doaj.art-2b9c7b2ec72742e58edf4d8347f246ca |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-12-12T01:00:57Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-2b9c7b2ec72742e58edf4d8347f246ca2022-12-22T00:43:44ZengElsevieriScience2589-00422022-08-01258104725Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communicationsAli Ali0Mohsen Khalily1Tim Brown2Rahim Tafazolli3Department of Electrical and Electronic Engineering, 5G & 6G Innovation Centres (5GIC & 6GIC), Institute for Communication Systems (ICS), University of Surrey, Guildford GU2 7XH, UK; Corresponding authorDepartment of Electrical and Electronic Engineering, 5G & 6G Innovation Centres (5GIC & 6GIC), Institute for Communication Systems (ICS), University of Surrey, Guildford GU2 7XH, UKDepartment of Electrical and Electronic Engineering, 5G & 6G Innovation Centres (5GIC & 6GIC), Institute for Communication Systems (ICS), University of Surrey, Guildford GU2 7XH, UKDepartment of Electrical and Electronic Engineering, 5G & 6G Innovation Centres (5GIC & 6GIC), Institute for Communication Systems (ICS), University of Surrey, Guildford GU2 7XH, UKSummary: This article investigates the unexplored potentials of vortices or orbital angular momentum (OAM) beams using the low-cost and high-gain dielectric reflectarray antennas (RAs) at the terahertz (THz) band. It proposes a paradigm to enable 3D beam-steering or OAM multiplexing by a single structure via tilted OAM beams. That, in turn, requires reaching the maximal attainable angles either to send multiple beams to different receivers or to focus the OAM beams of different modes in a desired direction. For this reason, two concepts are addressed in this work: (i). generating a single 3D steered OAM beam and (ii) producing multiple off-centered OAM beams with different modes. A volumetric unit cell is adopted to be accurately tuned through the aperture to steer the generated beams towards the desired direction(s). The proposed paradigm can be utilized to produce RAs with beam-steering or OAM multiplexing capabilities as candidates for THz indoor communications.http://www.sciencedirect.com/science/article/pii/S258900422200997XOptical materialsAntennasMetamaterials |
| spellingShingle | Ali Ali Mohsen Khalily Tim Brown Rahim Tafazolli Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications iScience Optical materials Antennas Metamaterials |
| title | Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
| title_full | Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
| title_fullStr | Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
| title_full_unstemmed | Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
| title_short | Metasurface-based THz reflectarray antenna with vortex multiplexing and beam-steering capabilities for future wireless communications |
| title_sort | metasurface based thz reflectarray antenna with vortex multiplexing and beam steering capabilities for future wireless communications |
| topic | Optical materials Antennas Metamaterials |
| url | http://www.sciencedirect.com/science/article/pii/S258900422200997X |
| work_keys_str_mv | AT aliali metasurfacebasedthzreflectarrayantennawithvortexmultiplexingandbeamsteeringcapabilitiesforfuturewirelesscommunications AT mohsenkhalily metasurfacebasedthzreflectarrayantennawithvortexmultiplexingandbeamsteeringcapabilitiesforfuturewirelesscommunications AT timbrown metasurfacebasedthzreflectarrayantennawithvortexmultiplexingandbeamsteeringcapabilitiesforfuturewirelesscommunications AT rahimtafazolli metasurfacebasedthzreflectarrayantennawithvortexmultiplexingandbeamsteeringcapabilitiesforfuturewirelesscommunications |