苜蓿叶形耦合腔慢波结构的模拟和验证

Simulation and Verification of Clover-Leaf Coupled Cavity Slow-Wave Structure

苜蓿叶形耦合腔慢波结构是一种高耦合阻抗的慢波线。由于结构复杂,其数学分析及工程设计都非常困难。该文利用三维电磁计算软件Isfel3d,Mafia,HFSS对这种结构的色散特性、耦合阻抗进行数值模拟,在分析模拟结果的基础上,对这种结构做了初步的优化。结果表明,数值模拟与实验结果有很好的一致性,这对改进这种慢波线的工程设计具有重要意义。

Clover-leaf coupled cavity is a kind of slow-wave structure of high interaction impedance.The mathematic analyse and the engineering design are very difficult for its complex structure.In this paper, threedimensional simulation codes Isfel3d, Mafia, HFSS are used to determine the dispersion and interaction impedance.Based on analyse of simulate results,the coupled cavity slow-wave structure is optimized primarily.The simulation results is consistent with the measurement results and is significant to design of the slow-wave structure.