Subterahertz Traveling Wave Tubes : A Route Toward Ultracapacity 6G Wireless Networks: Application Scenario and Challenges

Paoloni, Claudio (2026) Subterahertz Traveling Wave Tubes : A Route Toward Ultracapacity 6G Wireless Networks: Application Scenario and Challenges. IEEE Electron Devices Magazine, 4 (1). pp. 14-20. ISSN 2832-7683

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Abstract

When we imagine wireless communications in the next 10 or 20 years, we picture a ubiquitous stream of data moving at unlimited speed, enabling a new ecosystem where real and virtual merge. A vast and endless increase of data volume in the sixth generation of wireless networks 6G (G stands for generation of mobile networks) will fuel disruptive applications, immersive user experience, creativity, and societal enhancements. Terrestrial and satellite networks, already cooperating, will be intimately integrated in a multidimensional datasphere. While computational power has grown enormously, enabling the processing of huge amounts of data, data wireless transmission is presently a bottleneck of communication infrastructures confined to the microwave spectrum. Wireless links with tens or hundreds of gigabits per second (Gb/s) will be possible only by the widespread adoption of the subterahertz (sub-THz) spectrum (0.1–0.4 THz) for paving the way to a new era of wireless communications.