【摘要】 根据Bethe小孔耦合理论,设计出在S波段(1.8～2.6 GHz)电磁波通过矩形波导宽边圆孔耦合的定向耦合器。为提高定向耦合器的方向性,孔径采用切比雪夫孔径分布。根据预定的技术指标,初步设计出等孔间距的波导定向耦合器的有关参数。在此基础上,利用仿真软件CST对小孔厚度和部分孔间的距离进行优化,大大提高定向耦合器的整体性能。更多还原

【Abstract】 According to the Bethe’s aperture coupling theory,this paper presents a design of S band(1.8～2.6 GHz)high power directional coupler which the electromagnetic wave is coupled through rectangular waveguide broadside.In order to enhance coupler’s directivity,the apertures are distributed by chebyshev function.According to predetermined specifications,we can get relevant parameters of directional couplers.On the basis of this,using simulation software CST to do the simulation and optimization of the thickness and space of some holes,the performance of directional coupler is greatly improved.更多还原