应用Designer设计带通滤波器误差研究

Error Research of Band-pass Filter Design Using Designer

应用Designer软件计算出交指型腔体带通滤波器的初始尺寸,在HFSS软件中建模并仿真优化,对Designer计算结果与HFSS优化后的S参数仿真结果进行比较分析,确定二次Designer计算参数,更新仿真模型并再次进行HFSS优化仿真得出二次仿真结果,对两次仿真结果进行比较分析后确定误差系数,宽带滤波器设计引入误差系数后进行仿真验证,确定了该设计方法的有效性,从而简化了腔体滤波器设计,进而提高了设计效率。

The initial size of band-pass filter can be computed by Ansoft Designer, and be modeled in HFSS. The comparison of Designer optimization results and S parameter optimized in HFSS is performed to determine the secondary Designer parameter. The simulation model is updated and the HFSS optimal simulation is done again to obtain secondary simulation result. The error coefficient is determined after comparing and analyzing the two simulation results. The simulation and certification of band-pass filter can be performed after the introduction of error coefficient. The results show that this design is effective, simplifies the design of cavity filter and improve the design efficiency.