电子科技大学学报Issue(5)：688-693,6.DOI:10.3969/j.issn.1001-0548.2013.05.009
Ka波段耦合腔行波管的粒子模拟研究
Particle-In-Cell Simulations of a Ka-Band Coupled-Cavity Traveling-Wave Tube
摘要
Abstract
The particle-in-cell simulations of a Ka-band coupled-cavity traveling-wave tube (CCTWT) were performed to investigate the nonlinear interaction of the tube. The interaction circuit employs the double staggered ladder line coupled-cavity slow-wave structure. Combined with the design of well-matched high frequency coupling system, a 3-D circuit model based on CPI’s Ka-band CCTWT was constructed. The particle-in-cell simulation results show that the tube can produce saturated average output power over 550 watts with greater than 600 MHz instantaneous bandwidth ranging from 28.3 GHz to 30 GHz when we adopt the similar parameters as CPI’s Ka-band CCTWT, such as beam voltage, beam current and the slow-wave structure dispersion characteristics. The corresponding saturated gain and beam efficiency can reach over 33 dB and 8.39%, respectively. These results are in good agreement with the experimentally measured ones of the CPI’s Ka-band CCTWT, which suggest that our design scheme is feasible and the CST PIC solver can accurately predict the performance of the CCTWT.关键词
耦合腔行波管/Ka波段/粒子模拟/重入式双交错梯形线/慢波结构Key words
coupled-cavity traveling-wave tube/Ka-band/particle-in-cell/reentrant double staggered ladder/slow-wave structure分类
信息技术与安全科学引用本文复制引用
刘洋,宫玉彬,徐进,刘漾,赖剑强,许雄,沈飞,黄民智,唐涛,魏彦玉..Ka波段耦合腔行波管的粒子模拟研究[J].电子科技大学学报,2013,(5):688-693,6.基金项目
国家杰出青年科学基金(61125103)；国防科技重点实验室基金(9140C050101110C0501)；中央高校基本科研业务费专项基金(ZYGX2009Z003，ZYGX2010J054) （61125103）
