摘要
本文根据Fourie变换理论,推导了电磁波在双正弦周期调制介质中的传播特性,求解了上述条件下电磁场边值问题的特征值和相应的特征向量问题。通过数值计算,得到了一组描述此种介质中电磁波的色散特性。同时,找到某些不同于单正弦周期介质中传播特性的结果。最后,介绍了一种新型的双阻带介质波导滤波器作为它的应用实例。
Based on the theory of Fourier Transform, the fundamental equations are set in this paper, which governs the propagation characteristics of TE mode in the double sinusoidally periodic medium. The mathematical formulas for computing the eigenvalues and the corresponding eigenvectors are also derived. As a result of a large amount of numerical culculation, a series of curves which represent the dispersion characteristics are available. About some physical effects are different from the regular ones occurring in simple sinusoidally periodic media. A new kind of the filter of rectangular waveguide filling with double sinusoidally periodic dielectric is analyzed.
出处
《通信学报》
EI
CSCD
北大核心
1990年第2期41-46,共6页
Journal on Communications
