摘要
为了研究矩形波导在不同模式、不同激励源时的动态传输特性,应用FDTD法,分析了激励源为电场源和磁场源时矩形波导中的截止频率和动态特性,得到了两种激励模式的幅频特性和瞬态图。结果表明,在源处使用不同性质的场都对相同模式的频率没有影响,同样可以激励起矩形波导的相同模式所有低阶模。这些结论将为波导的分析应用提供有益的参考。
For studying dynamic transmitting characteristics of rectangular waveguide under different excitation sources in different modes,the cut- off frequent and dynamic specialty of rectangular waveguide is analyzed by FDTD when electric field source and magnetic field source as an excitation source separately,and their amplitude- frequency and transient characteristics of the two excitation modes are educed. Testify as a result that in the source use the field of different character,didn＇t influence to the frequency of same mode,the same can excitated rectangle waveguide the same mode is all low rank molds. These conclusions may possibly be helpful in the analysis and application to waveguide.
出处
《现代电子技术》
2008年第1期153-155,共3页
Modern Electronics Technique
关键词
时域有限差分法
激励源
截止频率
E型(电场源)
H型(磁场源)
FDTD
excitation source
cut - off frequency
E pattern （ electric field source）
H pattern （magnetic field source）
