轴向反馈式虚阴极振荡器的频率特性
Frequency feature of an axial feedback vircator
-
摘要: 采用粒子模拟和实验相结合的方法对轴向反馈式虚阴极振荡器进行了研究。结果表明，轴向反馈式虚阴极振荡器能够有效地锁定微波频率，提高输出功率。在二极管电压为450kV，束流为22kA的条件下，当阴阳极间距大于1.3cm时，辐射微波主频约为3.5GHz，此时与腔的耦合较好，微波辐射功率较高；当阴阳极间距小于1.3cm时，辐射微波主频约为4.8GHz。实验和模拟符合得较好。Abstract: With particle simulation and experiment, an axial feedback vircator is studied in detail. It shows that the axial feedbacked vircator can lock the microwave operation frequency and increase the microwave power effectively. In our model, It is found that the dominant microwave frequency is approximately unchanged at about 3.5GHz or at about 4.8GHz with the cathodeanode gap greater or less than 1.3cm, respectively, with a diode voltage of about 450kV and the beam current of about 22kA. In addition, it is also found that the coupling of the microwave of 3.5GHz with the cavity mode is good. The experimental results confirm the conclusions obtained in simulation.
-
Key words:
- vircator /
- particle simulation /
- axial feedback
-
点击查看大图
计量
- 文章访问数: 1905
- HTML全文浏览量: 240
- PDF下载量: 482
- 被引次数: 0
下载:
