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利用场匹配法得到了类磁控管结构的色散关系以及场函数表达式的同时,利用高频电磁场分析软件验证了所得结果正确性,并改变结构参数考察了截止频率的变化情况.最终结果表明:在保证其他参量不变的前提下,丌模截止频率随外半径的减小,内半径的增大或谐振腔数的增多而提高,随谐振腔张角的增大而降低.所得结果对于分析同轴辐射相对论磁控管的模式转换和传输特性奠定了基础.
Using the field matching method, the dispersion relation of the magnetron-like structure and the expression of field function are obtained. At the same time, the correctness of the obtained results is verified by the high-frequency electromagnetic field analysis software, and the change of the cutoff frequency is investigated by changing the structural parameters. : Under the premise of keeping the other parameters unchanged, the mode-cutoff frequency increases with the decrease of the outer radius, the increase of the inner radius or the number of resonant cavities, and decreases with the increase of the cavity opening angle. Analysis of coaxial radiation relativistic magnetron mode conversion and transmission characteristics laid the foundation.