利用奇异值分解技术，构造该频带内一组与频率无关的特征模正交基。
The antenna characteristics can be determined rapidly by the frequency independent basis functions.
在一定的结构条件下，由于声子模与模的耦合作用，出现了共振透射和禁止频带。
The stop-frequency gap and the transmission resonance are observed for certain structural parameters due to mode-mode coupling.
采用电流模理论和电流模电路设计超宽频带、超高速度模拟开关。
Current mode theory enables design of super wide frequency band, super high speed analog switches by introducing circuit structures and principles.
分析了工作频带内竞争模式对工作模式的影响，探讨了滤模加载对改善模式转换性能的作用。
The influence of mode competition on operating mode inside the bandwidth is analyzed and the effect of mode filter on mode conversion property is discussed.
其次，结合MATLAB编程仿真和HFSS建模仿真，对微带天线的三种典型分析方法进行了深入研究，即传输线法、腔模理论和有限元法，为下面宽频带微带天线的设计奠定了理论依据。
Secondly, Using MATLAB and HFSS to deeply research three types of analytical method for microstrip antenna which are transmission line method, cavity mode theory and finite-element method.
其次，结合MATLAB编程仿真和HFSS建模仿真，对微带天线的三种典型分析方法进行了深入研究，即传输线法、腔模理论和有限元法，为下面宽频带微带天线的设计奠定了理论依据。
Secondly, Using MATLAB and HFSS to deeply research three types of analytical method for microstrip antenna which are transmission line method, cavity mode theory and finite-element method.
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