通过波矢空间等频线的方法来分析声子晶体中声波的传播。
The propagation of acoustic waves in sonic crystals is analyzed by means of acoustic equi-frequency surfaces.
应用此模型，并结合分层介质中的并矢格林函数，分析了贴片天线的辐射阻抗、空间波辐射效率等特性。
Using this model and the relevant dyadic Green's function, some characteristics of a rectangular patch antenna near resonance, such as radiation resistance and space wave efficiency, are analysed.
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