Millimeter wave traveling wave tubes for the 21st Century

Traveling wave tubes are rapidly evolving to provide unprecedented power level in comparison to solid state devices in the millimeter waves region of the spectrum (80-300 GHz) thus enabling a wide range of applications. Wireless communications, imaging, plasma diagnostics, healthcare and many others...

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Bibliographic Details
Published in:Journal of electromagnetic waves and applications 2021-03, Vol.35 (5), p.567-603
Main Authors: Paoloni, Claudio, Gamzina, Diana, Letizia, Rosa, Zheng, Yuan, Luhmann, Neville C.
Format: Article
Language:English
Subjects:
backward wave oscillators
millimeter waves
Traveling wave tubes
vacuum electronics
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Summary:Traveling wave tubes are rapidly evolving to provide unprecedented power level in comparison to solid state devices in the millimeter waves region of the spectrum (80-300 GHz) thus enabling a wide range of applications. Wireless communications, imaging, plasma diagnostics, healthcare and many others will gain substantial features if high power at millimeter waves would be available from compact sources. The development of fabrication technologies is proving crucial for introducing new topologies and structures for millimeter wave vacuum electronic devices, compatible with the dimensions dictated by the short wavelength that poses substantial manufacturing challenges due to tight tolerances. This review paper will provide an overview of the principles, evolution and state of the art of one of the most widely utilized vacuum electronic device, the traveling wave tube (TWT). The wide band, high gain features of TWTs make those devices the most promising solutions for high power at millimeter waves and THz frequencies.
ISSN:0920-5071
1569-3937
DOI:10.1080/09205071.2020.1848643