Study of transmission characteristics of two kinds of deformed dual-ridge waveguide
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摘要: 为了寻找最佳传输特性的对称双脊波导结构,提出了圆形和椭圆形两种变形对称双脊波导,采用有限元的方法,研究了圆形和椭圆形两种变形对称双脊波导对传输特性的影响。计算了脊尺寸变化时的截止波长和单模带宽,给出了主模场结构图以及变形对截止波长和单模带宽影响的相应的关系曲线,并分析了传输特性随对称脊波导结构尺寸的变化情况。该研究结果对变形双脊波导的应用和研究提供了参考,并为脊波导器件的小型化提供了指导。Abstract: In order to find a symmetrical dual-ridged waveguide with optimal transmission characteristics,two novel dual-ridged waveguides with circle and ellipse ridges respectively were put forward.The influence of both the deformed dual-ridged waveguides on the transmission characteristics of the waveguide was analyzed by means of finite element method.The cut off wavelength and single-mode bandwidth were calculated for different ridge dimensions.The field patterns of dominant mode and the curve for the effect of deformation on the cutoff wavelength and brand width were drawn.Finally,the relationship between the transmission characteristics and the dimension of the ridges was analyzed.It is shown that these results can provide valuable reference of application and study of the deformed dual-ridge waveguides and provide instructions for miniaturization of ridged waveguide apparatus.
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