Journal of Radio Electronics. eISSN 1684-1719. 2025. ¹5

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DOI: https://doi.org/10.30898/1684-1719.2025.5.9

 

 

Enrichment of the radiation spectrum

of an electron generator with passive mode

locking in a hard excitation regime

 

M.N. Vilkov, N.S. Ginzburg, I.V. Zotova, S.V. Samsonov, A.S. Sergeev

 

Federal Research Center A.V. Gaponov-Grekhov Institute of Applied Physics RAS,

603950, Russia, Nizhny Novgorod, Ul'yanov St., 46

 

The paper was received May 23, 2025.

 

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.

Key words: short pulse generation, passive mode locking, hard excitation regime, Ka-band, frequency comb.

Financing: This work was supported by the Russian Science Foundation, grant No. 23-12-00291.

Corresponding author: Michael Nikolaevich Vilkov, vilkovmn@ipfran.ru

 

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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. – ¹. 5. https://doi.org/10.30898/1684-1719.2025.5.9 (In Russian)