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应用科学学报 ›› 1986, Vol. 4 ›› Issue (3): 276-279.

• 论文 • 上一篇    下一篇

用有限差分法计算圆柱形介质谐振器的谐振频率

李英, 罗思奋   

  1. 上海科学技术大学
  • 收稿日期:1984-07-04 修回日期:1984-11-24 出版日期:1986-09-30 发布日期:1986-09-30

COMPUTING RESONANT FREQUENCIES OF CYLINDRICAL DIELECTRIC RESONATOR WITH FINITE-DIFFERENCE METHOD

LI YING, LUO SIFEN   

  1. Shanghai University of Science and Technology
  • Received:1984-07-04 Revised:1984-11-24 Online:1986-09-30 Published:1986-09-30

PDF

117

被引次数

6

摘要： 任何电磁波系统中的场均应满足麦克斯韦方程.在圆柱坐标系(R,θ,Z)中,若圆柱形介质谐振器的中心轴与Z轴重合,则由麦克斯韦方程,可导出与θ无关的亥姆霍兹方程.

Abstract: The boundary condition, which must be satisfied while computing the resonant frequencies of cylindrical dielectric resonators used in microwave circuits with the finite-difference method, are dealt with by introducing fiotioious variables. This paper describes in detail how the boundary conditions are treated. Compared with Pospieszalski's data, the errors in our case are less than 6.8% and 1.7%, respectively. When meshes are properly chosen, errors can be further reduced.