新型Ka波段径向高功率微波振荡器

A Novel High Power Ka-Band Radial Microwave Oscillator

本文提出了一种新型GW级微波输出的Ka波段径向高功率微波振荡器,该器件采用TM01模为工作模式。利用粒子模拟软件对器件进行优化,在磁场为0. 8 T、电子束电压为400 k V、电流为7. 5 k A时,得到频率为30. 8 GHz的高功率微波输出,功率超过1. 1 GW,束波转换效率达37%,器件内最大电场为1. 2 MV/cm。与轴向器件相比,有高功率容量的特点。对不锈钢器件来说,相同结构参数的器件输出功率为0. 8 GW,效率27%,最大场强降至1. 0 MV/cm。

A novel high power Ka-band radial microwave oscillator with GW output power is proposed in this paper. The operation mode of it is TM01. The radial devices have higher power capacity when compared with axial devices. The optimal particle simulation shows that with a beam voltage of 400 kV, a beam current of 7.5 kA and a guiding magnetic field of 0.8 T, the new radial microwave oscillator can produce 1.1 GW output power at the frequency of 30.8 GHz. The beam-wave conversion efficiency of it is 37% and the maximum radial electric field inside is 1.2 MV/cm. While for a stainless steel device with the same structure, the output power is 0.8 GW, the efficiency is 27% and the maximum radial electric field is 1.0 MV/cm.