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研究圆柱谐振腔圆环缝隙的优化设计方法,首先说明了微波谐振腔微扰法原理以及辐射功率对腔体工作的影响;然后,利用HFSS进行了辐射功率的仿真计算,为便于将结果用于优化设计中,用类二次高斯函数对辐射功率数据进行拟合,得到其关于开缝宽度和开缝位置的二元拟合关系式;最后,建立了以辐射功率最小为目标函数的优化模型,并利用HFSS进行了数值仿真,验证了方法的可行性.结果表明,利用该方法能够减少圆柱谐振腔的辐射量,为谐振腔体缝隙的优化设计提供了一种新的思路.
Firstly, the principle of microwave cavity perturbation method and the influence of radiated power on the cavity work are described. Then, the simulation calculation of radiated power using HFSS is carried out. In order to facilitate the application of the result in In the optimal design, the quadratic Gaussian function is used to fit the radiant power data, and the binary fitting relation between the width and the position of the slits is obtained. Finally, an optimization model with the minimum radiation power as the objective function is established , And the numerical simulation is carried out by HFSS to verify the feasibility of the method.The results show that this method can reduce the radiation of the cylindrical resonator and provide a new idea for the optimal design of the resonator cavity gap.