A Survey on Advancements in THz Technology for 6G: Systems, Circuits, Antennas, and Experiments

TL;DR

This survey reviews recent advancements in THz technology for 6G, focusing on systems, circuits, antennas, and experiments, highlighting challenges, recent progress, and future research directions in the 200-400 GHz range.

Contribution

It provides a comprehensive overview of the state-of-the-art in THz components and experimental demonstrations for 6G, identifying open problems and future prospects.

Findings

Recent experimental demonstrations of THz systems

Advancements in THz device technology and antennas

Identification of open challenges and future research areas

Abstract

Terahertz (THz) carrier frequencies (100 GHz to 10 THz) have been touted as a source for unprecedented wireless connectivity and high-precision sensing, courtesy of their wide bandwidth availability and small wavelengths, but noteworthy implementation challenges remain to make this a reality. In this paper, we survey recent advancements in THz technology and its role in future 6G wireless networks, with a particular emphasis on the 200-400 GHz frequency range and the IEEE 802.15.3d standard. We provide a comprehensive overview of THz systems, circuits, device technology, and antennas, while also highlighting recent experimental demonstrations of THz technology. Throughout the paper, we review the state-of-the-art and call attention to open problems, future prospects, and areas of further improvement to fully realize the potential of THz communication in next-generation wireless connectivity.