梳状线带通滤波器的设计和仿真

Design and Simulation of Combline Bandpass Filter

根据设计要求，采用理论计算和软件仿真相结合的方法完成了梳状线带通滤波器的设计，理论计算得到谐振腔的外界Q值和腔间耦合系数，结合HFSS软件仿真得到滤波器的初始尺寸值，然后经过整体的仿真和优化得到满足指标要求的滤波器结构。与传统设计方法相比，本设计的滤波器具有通用性强、设计准确、研制周期短等优点。

According to the design requirements, the design of the band-pass filter is completed combining the theoretic calculation with software simulation. By theoretic calculation, the external Q value and the coupling coefficient between resonators are obtained. Based on the simulation of software HFSS, the initial practical structure of the band-pass filter is also acquired. Then the filter structure which satisfies the design requirements is acquired through overall simulation and optimization. Compared with the traditional methods, it has the ad- vantages of good generality, accurate design and short development cycle, etc.