一种宽阻带微带发夹带通滤波器的设计

doi:10.13190/j.jbupt.2020-077

北京邮电大学学报 ›› 2021, Vol. 44 ›› Issue (1): 92-96.doi: 10.13190/j.jbupt.2020-077

一种宽阻带微带发夹带通滤波器的设计

郑海宇, 朱伟光, 张志涛, 张欣雷, 胡善文

南京邮电大学电子与光学工程学院, 南京 210023

收稿日期:2020-06-18 出版日期:2021-02-28 发布日期:2021-09-30
通讯作者: 胡善文(1985-),男,副教授,E-mail:shanwenh@njupt.edu.cn E-mail:shanwenh@njupt.edu.cn
作者简介:郑海宇(1995-),男,硕士生.
基金资助:
国家自然科学基金项目（61501261，61504061）；中国博士后基金项目（2017M621793）

Design of a Microstrip Hairpin Bandpass Filter with Wide Stopband

ZHENG Hai-yu, ZHU Wei-guang, ZHANG Zhi-tao, ZHANG Xin-lei, HU Shan-wen

College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Received:2020-06-18 Online:2021-02-28 Published:2021-09-30

摘要/Abstract

摘要： 为得到高选择性、宽阻带的滤波器，并满足6 GHz以下频段对通信设备小型、便携的要求，提出了一种新型微带发夹带通滤波器.相比于传统结构，该新型结构在连接输入端、输出端的谐振单元上分别加入了1/4波长的开路微带线，并且在滤波器输入端馈电线的两侧增加金属通孔.通过两者相互结合的方式，在寄生通带处产生传输零点，实现寄生通带的抑制，达到宽阻带的目的.对提出的新型结构滤波器进行实物加工与测试，结果表明，该新型结构滤波器能够实现宽阻带，具有良好的频率选择特性.

关键词: 发夹结构, 宽阻带, 高选择性, 微型滤波器, 微带线

Abstract: To obtain a highly selective, wide stopband filter and meet the requirement of sub-6GHz band compact portable communication devices,a new type of microstrip hairpin bandpass filter is proposed. Compared with the conventional structure,the proposed adds a quarter-wavelength open microstrip line to the resonance unit which is connected to the input and output ends,and adds metal holes on both sides of the input feeder of the filter. The wide stopband is achieved by transmission zeros at the parasitic passband. The proposed filter is processed and tested. It is shown that it can realize a wide stopband and has good frequency selection characteristics.

Key words: hairpin structure, wide stopband, high selectivity, miniaturized filter, microstrip line

中图分类号:

TN713

郑海宇, 朱伟光, 张志涛, 张欣雷, 胡善文. 一种宽阻带微带发夹带通滤波器的设计[J]. 北京邮电大学学报, 2021, 44(1): 92-96.

ZHENG Hai-yu, ZHU Wei-guang, ZHANG Zhi-tao, ZHANG Xin-lei, HU Shan-wen. Design of a Microstrip Hairpin Bandpass Filter with Wide Stopband[J]. Journal of Beijing University of Posts and Telecommunications, 2021, 44(1): 92-96.

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一种宽阻带微带发夹带通滤波器的设计

Design of a Microstrip Hairpin Bandpass Filter with Wide Stopband

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