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结合传输线理论和史密斯圆图分析,文中提出了一种利用全介质部分反射覆层构造宽带Fabry-Perot谐振腔天线的方法。所设计的覆层结构在工作频带内拥有正斜率的反射相频特性,可满足谐振腔天线的宽带谐振条件。运用该方法设计了工作于Ku频段的宽带Fabry-Perot谐振腔天线,通过仿真计算和样件加工测试验证了该方法的正确性和有效性。
Combined with transmission line theory and Smith chart analysis, a method of constructing a wideband Fabry-Perot resonator antenna using all-dielectric partially reflective cladding is proposed. The designed cladding structure has a positive slope of the reflected phase-frequency characteristics in the working frequency band to meet the broadband resonance conditions of the resonant cavity antenna. The wideband Fabry-Perot resonant cavity antenna operating in the Ku band is designed by this method. The correctness and validity of the proposed method are verified by simulation and sample processing.