A Novel Cross-Band Frequency Hopping Gigawatts Class High-Power Microwave Oscillator

A novel cross-band frequency hopping giga- watts (GWs) class high-power microwave (HPM) oscillator is proposed in this brief, which consists of an inner Ku-band coaxial oscillator, an outer ${X}$ -band coaxial oscillator, a beam transfer channel, and an extraordinary external magnetic field system. Compared with ordinary design, the external magnetic field of this device is generated by three closely spaced solenoids. Through the adjustment of the current passing through each solenoid, two kinds of magnetic field distribution can be generated, each guides the beams into a separate frequency beam-wave interaction region. The preliminary particle-in-cell (PIC) simulation results were as follows: when the currents passing through the three solenoids were the same of 700 A, a HPM output with a frequency of 14.4 GHz, and a power of 1. 5 GW was obtained, achieving a power efficiency of 37%; when the three solenoid currents were 1800 A, 225, and 460 A, respectively, a HPM output with a frequency of 8.2 GHz and a power of 1.6 GW was obtained, achieving a power efficiency of 40%.