Development of a vacuum window for a miniature W-band TWT
Oleg R. Abramov 2
Roman A. Torgashov 1,2
1 Saratov Branch Kotel'nikov Institute of Radioengineering and Electronics RAS, Saratov, Russia
2 Saratov State University, Saratov, Russia
Abstract
The development of miniature traveling-wave tubes (TWTs) of millimeter- and submillimeter-wave bands is a very important task of modern vacuum electronics. Such devices are broadband and can provide high output power in continuous-wave regime. One of the key elements of the TWT is the input/output structures of microwave radiation, which includes a vacuum window. The input/output structure should provide broadband coupling at a level not exceeding VSWR = 1.3 to provide a stable gain regime.
In this paper, we present the results of the development of vacuum window design for a miniature W-band (75-110 GHz) TWT. It was obtained that the best broadband coupling in the operating band is achieved by rotation of the window at the Brewster angle. With such configuration, the VSWR does not exceed 1.2 in the entire operating frequency band.
Speaker
Oleg R. Abramov
Saratov State University
Russia
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