电子元件与材料2026，Vol.45Issue(3)：290-295,6.DOI:10.14106/j.cnki.1001-2028.2026.1408
三阶微带滤波器快速设计方法
Fast design method for third-order microstrip filter
摘要
Abstract
The distributed parameter effect makes the design of microstrip filters time-consuming.Solely relying on designers'experience may not necessarily meet the technical specifications in the end.Therefore,it is highly necessary to conduct in-depth research on their physical mechanisms,develop analytical methods,and accelerate their design process.This paper carried out an in-depth study on a third-order microstrip filter,which is composed of a parallel coupled-line section,an open-end stub,and another parallel coupled-line section connected in sequence.By establishing a lumped-parameter equivalent circuit for it,the physical mechanisms were clearly revealed,including the generation mechanism of transmission poles and the formation mechanism of the passband.Furthermore,explicit calculation formulas were established,and a fast design method was developed based on these formulas,which can be used to guide the design under different technical specifications.Finally,an example with a center frequency of 4.0 GHz and a relative bandwidth of 30%was used to verify the effectiveness of the proposed fast design method.A set of good initial values of structural parameters was obtained through this method.After full-wave simulation optimization,only simple fine-tuning is required to achieve the design target,which reflects the superiority of the fast design method.关键词
微带/快速设计方法/等效电路/带通滤波器Key words
microstrip line/fast design method/equivalent circuit/bandpass filter分类
信息技术与安全科学引用本文复制引用
郭亮,兰云飞..三阶微带滤波器快速设计方法[J].电子元件与材料,2026,45(3):290-295,6.基金项目
国家重点研发计划(2209WY0015_1) （2209WY0015_1）
