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根据微扰法和横向谐振法,对漏波波导的辐射特性进行了理论数值计算,并与数值仿真计算结果进行比较。结果表明,在偏离微扰条件的情况下,需要对其衰减系数的理论计算结果进行修正,采用一个二元多项式来拟合等效缝宽度计算衰减系数的方法能够取得与仿真计算比较一致的结果。在天线设计的过程中,分析了不同口径场分布与衰减系数分布的关系。结果表明,在小型化设计的要求下,余弦分布的口径场是能够实现的。
According to the perturbation method and the transverse resonance method, the radiation characteristics of the leaky waveguide are theoretically calculated and compared with the numerical simulation results. The results show that the theoretical calculation of the attenuation coefficient needs to be corrected when deviating from the perturbation condition, and a binary polynomial is used to fit the equivalent width of the crack to calculate the attenuation coefficient, which can be compared with the simulation calculation . In the process of antenna design, the relationship between the distribution of different caliber field and the attenuation coefficient is analyzed. The result shows that the caliber field of cosine distribution can be achieved under the requirement of miniaturization design.