带慢波结构的虚阴极振荡器  

Investigation of a New Coaxial Extracted Vircator with Slow Wave Structure

作　　者：耿力东[1] 杨宇[1] 伍友成[1] 郝世荣[1] 张南川[1] 

机构地区：[1]中国工程物理研究院脉冲功率技术重点实验室,绵阳621900

出　　处：《微波学报》2014年第3期89-92,共4页Journal of Microwaves

基　　金：国家高技术发展计划项目

摘　　要：为探索新型高效率微波器件,受其它带慢波结构器件的启发,设计了由微波预调制腔、慢波结构腔和微波提取腔组成的新型虚阴极振荡器。研究表明,由于慢波结构的存在,束-波转换效率高于普通虚阴极振荡器,在电压550kV、电流16kA下,可以获得频率为1.95GHz,1.4GW的周期平均功率,16%的转换效率。随后在加速器平台进行了初步的实验研究,获得了辐射功率约600MW,频率约1.94GHz的微波输出,频率单一,可实现锁频。分析知,由于阴极制作过程导致电子发射不均匀是影响效率的主要原因。实验所测得的束-波转换效率达5%,表明该结构的高功率微波器件可以提高束波转换效率。In order to investigate the efficiency of the HPM device, a new vircator with slow-wave is proposed and stud- ied by simulation and experiment in this paper. First, the result of simulation show the efficiency of the structure is more than 16% ,the new vircator can produce of 1.95GHz microwave with an averaged power of over 1.4GW when the diode voltage was 550kV and the beam current was 16kA. In the following experiment, we get the output power of microwave is over 600MW. the frequency of microwave is 1.94GHz.

关 键 词：慢波结构 虚阴极振荡器 谐振腔 粒子模拟 

分 类 号：TN752[电子电信—电路与系统]