摘要
本文采用场匹配法对回旋速调管群聚腔进行了理论分析和数值模拟 ,讨论了两端开孔对腔谐振特性的影响及引入损耗介质层降低Q值方法 ,给出了一种工作频率为 34GHz,工作模式为TE0 1的回旋速调管低Q群聚腔的计算结果 ,结果表明 ,开孔大小明显影响腔内的谐振特性及驻波分布 ,损耗介质层的厚度增加将使群聚腔Q值迅速降低 ,选择适当的腔体结构 ,损耗介质及其厚度能有效地降低Q值 ,满足设计要求 .
The field matching technique is applied to do the theoretical analysis and numerical simulation of the buncher cavity in gyroklystron. The influence of side apertures on resonance characteristic and the way that quality factor is decreased by adding absorber have been discussed. The simulation results of buncher cavity with low quality factor in a 34 GHz, TE01 mode gyroklystron are presented. The numerical calculation shows that the diameter of aperture has obvious influence on the resonance characteristic and field distribution of stationary wave in the cavity, and the quality factor decreases rapidly as the thickness of absorber increases. When the structure of cavity is correct, the absorbing medium and its thickness are selected properly; the designed parameters can be obtained.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2003年第6期864-866,共3页
Acta Electronica Sinica
基金
大功率微波电真空器件技术国防重点实验室资助项目 (No 2 0 0 0JS1 0 .5 .1DZ0 2 )
