Development of Double-Beam Miniaturized Millimeter-Band Traveling-Wave Tube

Abstract

The development of miniature vacuum sources of coherent millimeter-band radiation with an output power of tens and hundreds of watts is a very important task of modern electronics. Such devices are of great interest for use in modern systems of high-data-rate wireless transmission systems, radar techniques, spectroscopy, etc. The traveling-wave tube is promising as a device capable of providing both high output power and gain, and a wide range of amplified frequencies in the millimeter band. Due to the fact that the characteristic dimensions of the key elements of millimeter-wave devices are on the order of hundreds of microns, it is also necessary to develop new technologies for the manufacture of such devices.
In this paper, we present the results of developing a slow-wave structure for a miniature W-band TWT with two sheer electron beams. The high-frequency parameters of the SWS were calculated. The beam-wave interaction regimes of a proposed TWT were also studied using three-dimensional PIC-simulation. It was obtained that such a tube can provide a gain coefficient of over 35 dB and an output power of over 110 W at frequencies of 100 GHz.
The fabrication technology of such a high-frequency structure based on the technology of laser cutting of thin copper films has been proposed. Test samples have been fabricated. Morphological analysis was carried out using optical and scanning electron microscopy.

Speaker

Roman A. Torgashov
Saratov Branch Kotel'nikov Institute of Radioengineering and Electronics RAS
Russia

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