Sub-THz Traveling Wave Tubes: A Route Towards Ultra Capacity 6G Wireless Networks

Paoloni, Claudio (2026) Sub-THz Traveling Wave Tubes: A Route Towards Ultra Capacity 6G Wireless Networks. IEEE Electron Devices Magazine. ISSN 2832-7683 (In Press)

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Abstract

When we imagine wireless communications in the next ten or twenty years, we picture a ubiquitous stream of data moving at unlimited speed, to enabling a new ecosystem where real and virtual merge. Vastly and endlessly 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 gigabits per second (Gb/s) will be possible only by the widespread adoption of the sub-THz spectrum (0.1 – 0.4 THz) for paving the way to a new era of wireless communications.