Recent Developments of Transmissive Reconfigurable Intelligent Surfaces:A Review

• 作者: TANG Junwen XU Shenheng YANG Fan LI Maokun
• 来源期刊: 中兴通讯技术（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Special Topic
• 页码范围: 21-27
• 页数: 7页
• 语种: 英文
• DOI: 10.12142/ZTECOM.202201004

摘要

Reconfigurable intelligent surface (RIS) is considered as one of the key technologies for the next-generation mobile communication systems. The transmissive RIS is able to achieve dynamic beamforming capability while transmitting an in-band RF signal through its aper-ture, and has promising prospects in various practical application scenarios. This paper reviews some of the latest developments of the trans-missive RIS. The approaches for transmissive RIS designs are classified and described briefly. Numerous designs with different phase resolu-tions, such as 1-bit, 2-bit or continuous 360° phase shifts, are presented, with detailed discussions on their operating mechanisms and trans-mission performances. The design solutions for various transmissive RIS elements are summarized and compared.