Abstract
This paper presents a modified wideband reflective unit-cell for Reconfigurable Intelligent Surface (RIS) operating at millimeter-wave (mmWave) n257 band. The unit cell is specifically optimized at extreme incident angles and utilizes dual-polarization reflection with p-i-n diodes for a 1-bit RIS control. The design exhibits superior reflective phase difference close to 180° across most of the 3 GHz bandwidth (26.50-29.45 GHz) and reflects over 74% of the energy even at extreme angle of incidence as high as 70° from the RIS boresight. The enhanced reflectivity minimizes losses, and precise phase control improves beam pointing accuracy crucial for low-complexity 1-bit RIS. Full-wave electromagnetic simulations confirm effective performance. The unit cell is compared with the current state-of-the-art unit cells, in terms of bandwidth, polarization, phase accuracy and operation in extreme angles of incidence.
Original language | English |
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Title of host publication | 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI): Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 1177-1178 |
ISBN (Electronic) | 9798350369908 |
ISBN (Print) | 9798350369915 |
DOIs | |
Publication status | Published - 30 Sept 2024 |
Event | Antennas and Propagation & USNC/URSI National Radio Science Meeting 2024 - Florence, Italy Duration: 14 Jul 2024 → 19 Jul 2024 https://2024.apsursi.org/ |
Publication series
Name | IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI): Proceedings |
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ISSN (Print) | 1522-3965 |
ISSN (Electronic) | 1947-1491 |
Conference
Conference | Antennas and Propagation & USNC/URSI National Radio Science Meeting 2024 |
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Abbreviated title | IEEE AP-S 2024 |
Country/Territory | Italy |
City | Florence |
Period | 14/07/2024 → 19/07/2024 |
Internet address |
Keywords
- Modified 1-Bit Unit-Cell
- mmWave RIS Optimized
- Extreme Incident Angle
- Reconfigurable Intelligent Surface