Feasibility Study of Axially- Extracted Virtual Cathode Oscillator |
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Authors: | G Singh and M V Kartikeyan |
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Institution: | (1) Department of Electronics and Communication Engineering, Jaypee University of Information Technology, Solan, 173215, India;(2) Department of Electronics and Computer Engineering, Indian Institute of Technology, Roorkee, 247667, India |
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Abstract: | In this paper, we have analyzed the design parameters of the axially - extracted virtual cathode oscillator, which is high-power
microwave source based on the concept of the virtual cathode associated with the intense relativistic electrons beam oscillations
in the electrostatic potential well. The microwave emission by the virtual cathode oscillator results from both the space
and time oscillations of virtual cathode and reflexing electrons trapped in the potential well between the virtual and real
cathodes. In the X-band frequency spectrum 700 MW microwave peak power has been obtained analytically by the solid electron
beam of 300 kV and 20 kA for feasible design parameters. The analysis has been performed by 2-dimensional, relativistic, electromagnetic
particle-in-cell simulation code XOOPIC. |
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Keywords: | Virtual cathode Relativistic electron Wide-bandwidth Electron trapping Space-charge limiting current |
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