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Journal of Radio Electronics Online scientific journal · eISSN 1684-1719
2025, № 5 · PHYSICAL PROBLEMS OF ELECTRONICS

Enrichment of the radiation spectrum of an electron generator with passive mode locking in a hard excitation regime

M.N. Vilkov1, N.S. Ginzburg1, I.V. Zotova1, S.V. Samsonov1, A.S. Sergeev1

1 Federal Research Center A.V. Gaponov-Grekhov Institute of Applied Physics RAS, Nizhnii Novgorod, Russia
Full text DOI: 10.30898/1684-1719.2025.5.9 UDC 537.86 EDN PNQZKI

Abstract

In this paper, we analyze the possibility of significant enrichment of the output radiation spectrum of an electronic oscillator with passive mode locking, including a helical gyro-TWT of the millimeter range and a cyclotron resonance absorber. To do this, it is necessary to implement a hard start of the oscillator, when a single electromagnetic pulse circulates along the feedback circuit, while in the soft excitation regime there are many such pulses. The possibility of a hard start of the oscillator with a central frequency of 33.5 GHz by a subnanosecond pulse at a frequency of 38 GHz from a single-pass BWO fed by a RADAN driver is investigated. The obtained data will be used in experiments on the implementation of a hard regime of generating powerful subnanosecond pulses based on passive mode locking.

  • Short pulse generation
  • passive mode locking
  • hard excitation regime
  • ka-band
  • frequency comb
Аннотация (на русском)

Обогащение спектра излучения электронного генератора с пассивной синхронизацией мод в жестком режиме возбуждения

Анализируется возможность существенного обогащения спектра выходного излучения электронного генератора с пассивной синхронизацией мод, включающего винтовую гиро-ЛБВ миллиметрового диапазона и циклотронно-резонансный поглотитель. Для этого необходимо осуществить жесткий запуск генератора, когда по цепи обратной связи циркулирует единственный электромагнитный импульс, тогда как в мягком режиме возбуждения таких импульсов много. Исследована возможность жесткого запуска генератора с центральной частотой 33.5 ГГц субнаносекундным импульсом от ЛОВ с частотой 38 ГГц, запитываемой драйвером РАДАН. Полученные данные будут использованы в экспериментах по реализации жесткого режима генерации мощных субнаносекундных импульсов на основе пассивной синхронизацией мод.

For citation

Vilkov M.N., Ginzburg N.S., Zotova I.V., Samsonov S.V., Sergeev A.S. Enrichment of the radiation spectrum of an electron generator with passive mode locking in a hard excitation regime // Journal of Radio Electronics. – 2025. – No. 5. https://doi.org/10.30898/1684-1719.2025.5.9

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