非均匀三腔谐振腔高频特性的数值分析
Numerical analysis on the high frequency features f the nonuniform threecavity resonator
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摘要: 用SUPERFISH程序对非均匀三腔谐振腔的高频特性进行了数值分析。分析了各腔长度的变化对类TM010 2π/3模式及其频率、各腔纵向场分量Ez大小及Ez径向分布的影响。结果表明：当各腔长度变化时，该模式只在一定范围内存在，且频率变化不大，频率的最大值和最小值相差小于4%；当该模式存在时，第一腔长度越小，则第一腔的纵向场分量越大；当第一腔长度不变时，第三腔的纵向场分量随着第二腔长度的增大而增大，而第一，二腔纵向场分量则随之变小；各腔长度变化对纵向场分量的径向分布影响很小。Abstract: Varying the span of each cavity from uniform to nonuniform, a new device called nonuniform threecavity transittime oscillator (NTCTTO) has been developed. By employing a SUPERFISH code, the high frequency features of a nonuniform threecavity resonator were investigated numerically. The influences of span change on TM0102π/3like mode and the corresponding frequency, on the zaxial component of the electric field and its radial distribution were studied. Results show whether the TM0102π/3like mode exists depends on the span of each cavity. When the TM0102π/3like mode exists, the influence of the span change on the corresponding frequency is small(the difference between the highest and the lowest frequency is less than 4%); when the first cavity gets longer, the zaxial com
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Key words:
- nonuniform threecavity /
- high frequency feature /
- numerical analysis
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