L波段双频磁绝缘线振荡器的设计与粒子模拟
Design and particle simulation of L-band bifrequency magnetically insulated transmission line oscillator
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摘要: 提出了利用角向分区来产生双频高功率微波的思想，并根据常规磁绝缘线振荡器的互作用主要在轴向而与角向无关的物理机制，通过在常规磁绝缘线振荡器内设置谐振腔深度的角向分区，建立了L波段双频磁绝缘线振荡器的模型，并利用电磁模拟软件，优化设计了L波段双频磁绝缘线振荡器。粒子模拟的结果为：在电子束电压为530 kV，电流为45.5 kA的条件下，得到了稳定的双频高功率微波输出，其微波频率分别为1.28 GHz和1.50 GHz，周期平均功率约为2.65 GW，功率效率约为11%，两个频率的频谱幅度相差约0.4 dB。Abstract: A new idea of azimuthal partition to generate bifrequency high power microwave (HPM) is put forward in this paper. According to the operation mechanism of a conventional magnetically insulated transmission line oscillator (MILO), the interaction between electron flow and microwave is in the axial and radial direction, but not in the azimuthal direction. Therefore, establishing the azimuthal partition of cavitydepth in a conventional MILO, an L-band bifrequency MILO (BFMILO) is designed. The BFMILO is simulated and optimized by electromagnetic simulation. The particle simulation shows that when the electron beam voltage is 530 kV and the beam current is about 45.5 kA, a BFMILO can generates about 2.65 GW of HPM with two stable and separate frequencies-1.28 GHz and 1.50 GHz. The power effici
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