A modified 1-bit unit-cell for mmWave RIS optimized at extreme incident angle

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish
Title of host publication2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI): Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1177-1178
ISBN (Electronic)9798350369908
ISBN (Print)9798350369915
DOIs
Publication statusPublished - 30 Sept 2024
EventAntennas and Propagation & USNC/URSI National Radio Science Meeting 2024 - Florence, Italy
Duration: 14 Jul 202419 Jul 2024
https://2024.apsursi.org/

Publication series

NameIEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI): Proceedings
ISSN (Print)1522-3965
ISSN (Electronic)1947-1491

Conference

ConferenceAntennas and Propagation & USNC/URSI National Radio Science Meeting 2024
Abbreviated titleIEEE AP-S 2024
Country/TerritoryItaly
CityFlorence
Period14/07/202419/07/2024
Internet address

Keywords

  • Modified 1-Bit Unit-Cell
  • mmWave RIS Optimized
  • Extreme Incident Angle
  • Reconfigurable Intelligent Surface

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