含有吸收介质的突变结构腔体场匹配分析  

Field matching analysis of abrupt cavities with absorbing materials

作　　者：罗勇[1] 李宏福[1] 谢仲怜[1] 喻胜[1] 邓学[1] 赵青[1] 徐勇[1] 

机构地区：[1]电子科技大学物理电子学院,成都610054

出　　处：《物理学报》2004年第1期229-234,共6页Acta Physica Sinica

摘　　要：采用分区求解场及边界场匹配方法推导出含有吸收介质波导的色散方程及突变结构高频腔体混合模式的场匹配方程。将解析分析与数值计算结合 ,对回旋速调管放大器高频腔体进行了数值计算 ,研究了吸收层对波导传播、衰减特性及谐振腔的谐振特性、损耗特性、Q值、场分布的影响。给出了数值模拟主要结果。Absorbing material is used to reduce the Q factors of resonant cavities, enhance the bandwidth and restrain the competitive modes in high-power microwave devices. In this paper, solving field in absorbing material and field matching method were used to derive the dispersion equation in waveguides and field matching formulas of hybrid modes (HEM) in an abrupt cavity with absorber. Based on the theoretical analysis, numerical simulations of the cavities in gyroklystrons were done.The influence of absorber on transmission and attenuation in waveguides, the loss and resonance characteristic and quality factors in cavities has been studied. The main results are presented.

关 键 词：吸收介质 场匹配 混合模 谐振腔 高功率微波 波导光学 色散方程 波导传播 谐振特性 损耗特性 

分 类 号：TN602[电子电信—电路与系统]