重庆邮电大学学报（自然科学版）2023，Vol.35Issue(6)：1047-1053,7.DOI:10.3979/j.issn.1673-825X.202211180332
一种准无反射带通滤波器
A quasi-reflectionless bandpass filter
摘要
Abstract
Addressing the issue of signal reflections impacting the performance of bandpass filters,we propose a design method of a compact microstrip quasi-reflectionless bandpass filter with wide absorption range.The structure is composed of two parts:a parallel-coupled bandpass serving as the main channel and an absorptive loss resonator made of resistors and short-circuit resonators in series,functioning as the absorption channel.After parametric analysis,a simple design method of quasi-reflectionless bandpass filter is given.A microstrip quasi-reflectionless bandpass filter with a center frequency of 3 GHz and a relative bandwidth of 75％is verified by HFSS simulation.The return loss in stopband and passband is about 11 dB,and about 92％of reflected power in stopband is absorbed by resistance.By reasonably designing the position of the absorption loss resonator,the overall filter size is 1.64×0.32λg×λg,meeting the requirements of miniaturization.关键词
准无反射带通滤波器/吸收损耗谐振器/小型化/宽吸收范围/高频电磁仿真软件(HFSS)Key words
quasi-reflectionless bandpass filter/absorption loss resonator/miniaturization/wide absorption range/high fre-quency structure simulator(HFSS)分类
信息技术与安全科学引用本文复制引用
张杨,侯明,李小珍,徐开心,胡雨婷..一种准无反射带通滤波器[J].重庆邮电大学学报（自然科学版）,2023,35(6):1047-1053,7.基金项目
国家自然科学基金项目(61864004)The National Natural Science Foundation of China(61864004) （61864004）
