圆杆交指型滤波器的设计

A Design of Cylinder Interdigital Bandpass Filters

介绍了圆杆交指型带通滤波器的设计原理和方法,根据交指滤波器的设计理论获得圆杆的自电容和互电容,利用计算机辅助设计工具进行数值计算,结合图表得到滤波器的最初尺寸。给出了一个中心频率为830 MHz圆杆交指滤波器的设计过程,利用HFSS软件仿真,提高了设计效率和精度,仿真结果和理论结果吻合良好,证明了设计方法的可行性。

This paper gives the particular description of a theoretical analysis and practical design for cylinder interdigital bandpass filter. First,the self- capacitance and mutual capacitance of the interdigital bandpass filter is obtained in according with the design theory of the interdigital bandpass filter. Based on computer aided design,the parameters of filter are given. A filter with passband centered at 830 MHz has been designed. Simulated by HFSS - software, which greatly improves the efficiency and accuracy of the design. The simulation result shows good agreement with theoretical result, which proves the method is valid.