Metamaterial-inspired slow-wave structures for w-band traveling-wave tubes
- Autores: Rostuntsova A.A.1,2, Kolesnichenko E.E.1,2, Ryskin N.M.1,2
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Afiliações:
- Saratov Branch Kotelnikov Institute of Radio Engineering and Electronics RAS
- Saratov State University
- Edição: Volume 69, Nº 10 (2024)
- Páginas: 982-988
- Seção: ЭЛЕКТРОНИКА СВЧ
- URL: https://journals.rcsi.science/0033-8494/article/view/282456
- DOI: https://doi.org/10.31857/S0033849424100077
- EDN: https://elibrary.ru/HPYSIG
- ID: 282456
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Resumo
Electromagnetic parameters of the ladder-type slow-wave structures (SWS) formed by a metal plate with periodically arranged slots of a certain shape placed in a waveguide are studied. Modifications of the ladder-type SWS associated with the complication of the slot shape or the waveguide shape are proposed in such a way that the frequency of the slot resonance is lower than the cutoff frequency of the waveguide, and the SWS exhibits the properties of a double-negative metamaterial. It is shown that the fundamental spatial harmonic is backward, while the +1st harmonic acquires normal dispersion and the beam-wave synchronism is possible in a sufficiently wide frequency band. SWS with dumbbell-shaped slots and SWS in a groove-loaded waveguide are designed for W-band traveling-wave tube (75…110 GHz) with a relative bandwidth of about 25% and operating voltages of 8…13 kV. In such structures, there is the possibility of interaction of a slow wave with two sheet electron beams propagating from above and below the plate.
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Sobre autores
A. Rostuntsova
Saratov Branch Kotelnikov Institute of Radio Engineering and Electronics RAS; Saratov State University
Autor responsável pela correspondência
Email: rostuncova@mail.ru
Rússia, 38 Zelenaya St., Saratov, 410019; 83 Astrakhanskaya St., Saratov, 410012
E. Kolesnichenko
Saratov Branch Kotelnikov Institute of Radio Engineering and Electronics RAS; Saratov State University
Email: rostuncova@mail.ru
Rússia, 38 Zelenaya St., Saratov, 410019; 83 Astrakhanskaya St., Saratov, 410012
N. Ryskin
Saratov Branch Kotelnikov Institute of Radio Engineering and Electronics RAS; Saratov State University
Email: rostuncova@mail.ru
Rússia, 38 Zelenaya St., Saratov, 410019; 83 Astrakhanskaya St., Saratov, 410012
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