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Asian Journal of Physics Vol. 33, Nos 9 & 10 (2024) 599-607

Investigation of multimode behavior in a W-band, three-cavity gyroklystron amplifier using time-dependent multimode analysis and PIC simulation

Ankhi Debnath, M V Swati, and Gaurav Singh Baghel
National Institute of Technology Silchar, Assam-788 010, India
This paper is dedicated to Dr Shrinivas Joshi

This paper presents the beam-wave interaction mechanism in a three-cavity, W-band gyroklystron amplifier. The investigation has been carried out using nonlinear, time-dependent, multimode analysis and PIC simulation. The cavities resonate at a higher order TE021 mode and operate in fundamental harmonic. Mode competition has been considered for the investigation and it predicted the output power in the operating mode as well as in the competing modes. The analysis and simulation results predicted a peak output power ~ 330 kW at 93.2 GHz with 25% electronic efficiency and saturated gain of 23.42 dB, which are in good agreement with the reported experiments. © Anita Publications. All rights reserved.
Doi: 10.54955/AJP.33.9-10.2024.599-607
Keywords: Millimeter-wave power source, Vacuum electron devices, Multimode analysis, PIC simulation, RADAR application.

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
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