A D-Band 2D-Scalable 4×4 Active Reflective Relay with Orthogonally Polarized On-Chip TX/RX Antennas and In-Front-End Common-Centroid Fast Azimuth/Elevation Angle-of-Arrival Detection

📋 论文概要

本文提出一种D波段二维可扩展4×4有源反射中继芯片，采用正交极化的片上TX/RX天线，旨在克服毫米波/亚毫米波通信中视距链路对动态信道的限制，实现非视距通信，提升6G无线链接的可靠性。

💡 主要创新点

• 首次实现D波段二维可扩展的4×4有源反射中继阵列，支持非视距链路。
• 采用正交极化片上TX/RX天线，降低收发干扰并提升隔离度。
• 集成前端电路与反射中继功能，实现紧凑的芯片架构。

🏷 关键词

📄 原文摘要

With the increasing demand for data rates, the mm-Wave and sub-THz spectrums have been actively explored for 6G wireless communication and sensing [1,2]. Although utilizing phased arrays with pencil-sharp beams overcomes the free-space path loss (FSPL) over 100GHz [3-5], these high-frequency links are mostly limited to line-of-sight (LOS) and highly susceptible to blockage. To enhance their reliability in dynamic and practical channels, reflective relay arrays are envisioned to enable non-line-of-sight (NLOS) links [6-8]. A growing number of CMOS passive and active relays at mm-Wave/sub-THz are reported [9-12]. However, all these relays operate in open-loop and assume the incident beam’s angle-of-arrival (AoA) is either known or will be processed by in-relay digital backends whose extra complexity/power overheads negate the simplicity of the relays. Though several AoA detection techniques are proposed for RF/mm-Wave receivers (RXs) [13-16], none

👥 作者与机构

Basem Abdelaziz Abdelmagid, Boce Lin, Hua Wang

ETH Zürich, Zürich, Switzerland