TY - JOUR
T1 - STAR-RIS for simultaneous communications and fourier-based AoA sensing: design and experimentation
AU - Rahimian Omam, Zahra
AU - Bagheri, Amirmasood
AU - Danesh, Shadi
AU - Ehsan Hosseininejad, Seyed
AU - Yurduseven, Okan
AU - Alexandropoulos, George C.
AU - Khalily, Mohsen
PY - 2025/6/4
Y1 - 2025/6/4
N2 - This paper presents a dual-functional Simultaneous Transmission and Reflection Reconfigurable Intelligent Surface (STAR-RIS) that enables concurrent control of electromagnetic (EM) waves and computational tasks within a single aperture, addressing emerging connect-and-compute requirements in next generation wireless systems. The proposed STAR unit cell employs a polarization-converting approach to achieve simultaneous amplitude and phase control in both transmission and reflection modes. The STAR-RIS design integrates holographic beamforming for communications alongside Fourier transform (FT) functionality for angle-of-arrival (AoA) sensing. It employs a coding metasurface with a linear phase gradient in its reflecting elements and a lens phase profile in its transmitting elements. A prototype with side-by-side reflection and transmission arrays is designed, fabricated, and experimentally tested at 26 GHz, demonstrating ±45∘ tilt-angle beams in the reflection for communications and EM wave focusing in the transmission space for AoA sensing.
AB - This paper presents a dual-functional Simultaneous Transmission and Reflection Reconfigurable Intelligent Surface (STAR-RIS) that enables concurrent control of electromagnetic (EM) waves and computational tasks within a single aperture, addressing emerging connect-and-compute requirements in next generation wireless systems. The proposed STAR unit cell employs a polarization-converting approach to achieve simultaneous amplitude and phase control in both transmission and reflection modes. The STAR-RIS design integrates holographic beamforming for communications alongside Fourier transform (FT) functionality for angle-of-arrival (AoA) sensing. It employs a coding metasurface with a linear phase gradient in its reflecting elements and a lens phase profile in its transmitting elements. A prototype with side-by-side reflection and transmission arrays is designed, fabricated, and experimentally tested at 26 GHz, demonstrating ±45∘ tilt-angle beams in the reflection for communications and EM wave focusing in the transmission space for AoA sensing.
M3 - Article
SN - 1536-1225
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
ER -