Wideband sub-THz Reconfigurable Intelligent Surface Using Planar Tightly Coupled Dipoles

Y. Zhou, X. Ma, Q. Luo, Y. Ma, G. C. Alexandropoulos, X. Yang

Research output: Contribution to journalArticlepeer-review

Abstract

In this letter, we present a proof-of-concept study of a 1-bit wideband reconfigurable intelligent surface (RIS) using planar tightly coupled dipoles (PTCDs). The PTCD RIS has a planar configuration with a single dielectric layer bonded to a ground plane and is fabricated using cost-effective printed circuit board (PCB) technology. Each RIS unit element achieves binary phase shifting by altering the polarization of the reflected wave by 180°. Cosimulation of the switch model with the RIS unit cell verifies the performance of the RIS. Passive prototypes are fabricated to demonstrate the concept, achieving a 3 dB gain bandwidth of 27.4% at the center frequency of 102 GHz, validated through simulations and measurements. Analytical calculations of the RIS response show good agreement with the simulated results.

Original languageEnglish
Pages (from-to)3659-3663
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
Volume23
Issue number11
DOIs
Publication statusE-pub ahead of print - 6 Aug 2024

Keywords

  • Antennas
  • Capacitance
  • Dipole
  • Prototypes
  • RIS
  • Radio frequency
  • Reconfigurable intelligent surfaces
  • Reflectarray
  • Substrates
  • Switches
  • Wideband
  • reflectarray
  • wideband
  • dipole
  • reconfigurable intelligent surface (RIS)

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