基于耦合谐振器的五通带带通滤波器设计  

Design of quint-band bandpass filter based on coupled resonators

作　　者：郭子玥 何明[1,2] 郭蓉 夏丹蕾 贾颖新 GUO Ziyue;HE Ming;GUO Rong;XIA Danlei;JIA Yingxin(College of Electronic Information and Optical Engineering,Nankai University,Tianjin300350,China;Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology,Tianjin300350,China;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing100190,China)

机构地区：[1]南开大学电子信息与光学工程学院,天津300350 [2]天津市光电子薄膜器件与技术重点实验室,天津300350 [3]中国科学院空天信息创新研究院,北京100190

出　　处：《电子元件与材料》2022年第9期962-967,共6页Electronic Components And Materials

摘　　要：提出了一款新型的结构紧凑的五通带带通滤波器。滤波器由四个互相耦合的均匀阻抗谐振器构成,可以激发六个谐振模式。在谐振器设计中,探究了电路主要电参数对谐振频率的影响。通过对谐振模式和传输零点的分析,将谐振器用于五通带滤波器设计。通过合理调节耦合间距及耦合长度,可以特定方式独立控制五个通带的带宽。最终,对五通带带通滤波器进行制作并测试。滤波器的五个中心频率分别位于1.9,2.37,3.34,4.2和4.86 GHz,通带插入损耗分别为1.35,1.26,1.62,1.14和2.11 dB。测试结果较好地验证了提出的结构和设计方法。A new compact quint-band bandpass filter(BPF)was proposed.This filter was consisted of four mutually coupled uniform impedance resonators,which could excite six resonance modes.In resonator design,the effects of main electrical parameters was explored on the resonant frequency.Based on the analysis of resonance modes and transmission zeros,the resonator can be used to design a quint-band filter.By reasonably adjusting the coupling distances and lengths,the bandwidths in the five passbands can be independently controlled by a specific method.Finally,a quint-band BPF was fabricated and measured.The central frequencies of the filter are at 1.9 GHz,2.37 GHz,3.34 GHz,4.2 GHz and 4.86 GHz with insertion losses of 1.35 dB,1.26 dB,1.62 dB,1.14 dB and 2.11 dB.Measurements verify the proposed structure and design method.

关 键 词：五通带滤波器 均匀阻抗谐振器 多径传输 可控带宽 传输零点 

分 类 号：TN304[电子电信—物理电子学]