Abstract

The magnetically insulated transmission line oscillator (MILO) is a promising high power microwave (HPM) source. The advantages of the MILO are the high power output, stable operation, self-magnetic insulation and the compact configuration, which attract the attention of many researchers. The investigated MILO covers the frequency from L-band, S-band, C-band, X-band to Ku-band. Increasing the output power, pulse duration, power conversion efficiency and repetitive frequency are four major development directions for the MILO. Therefore, the conventional MILO is focused on the research of the above-mentioned development directions. In addition, in order to increase the power conversion efficiency, preliminary studies of the complex MILO and the double-band MILO are also performed. However, the frequency tuning characteristic of the load-limited MILO has never been studied since the MILO was presented, which is a great pity. Some researchers even think the MILO cannot be tuned. In this paper, a tunable MILO is presented and the relevant simulation results are given.

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