一种双频段带通滤波器设计

Design of a Dual-band Bandpass Filter

在两个不同的双模谐振器上分别加载均匀阻抗支节和阶梯阻抗支节来实现双频带滤波器,并将其应用于GSM0.9～1.8GHz。使用HFSS软件对滤波器结构进行设计仿真,根据仿真结果对滤波器结构进行改进优化直至得出最优结果。将最优的滤波器结构制成实物并进行测试,得出的结果与仿真结果对比发现各项指标吻合。滤波器基本符合设计要求。

In this paper, HFSS is used to design and simulate the filter structure, and according to the simulation results, the filter structure is optimized many times until the optimal results are obtained. The optimum filter structure is made into an object and it is tested. The results are compared with the simulation results in order to come to a conclusion. Therefore, the filter is in line with the requirements.