Rigorous analysis of high-frequency characteristics of higher-order depressed MILO slow wave structure

The slow wave structure (SWS) of higher-order depressed magnetically insulated transmission line oscillator (HDMILO) is analyzed rigorously, and the electromagnetic field distribution is derived. High-frequency analysis results reveal that the degeneracy of two degenerate HEM11 modes is removed by the slot in SWS plate and the two degenerate modes split into two modes which polarize perpendicularly. Adjusting the azimuthal position of the slots destroys longitudinal oscillation condition of higher-order modes.