基于电磁带隙结构的四路双频带滤波功分器  

Four-way dual-band filtering power divider based on electromagnetic bandgap structure

作　　者：任鼎新 周勇 郭瑜 REN Dingxin;ZHOU Yong;GUO Yu(School of Internet of Things Engineering,Jiangnan University,Wuxi 214122,Jiangsu Province,China)

机构地区：[1]江南大学物联网工程学院,江苏无锡214122

出　　处：《电子元件与材料》2023年第6期714-721,共8页Electronic Components And Materials

基　　金：国家自然科学基金(61701195)。

摘　　要：针对无线通信系统对微波器件多频段、多通道的应用需求,基于电磁带隙结构,提出了一款四路应用的小型双频滤波功分器。该滤波功分器由八对电磁带隙(Electromagnetic Bandgap,EBG)谐振器、隔离电阻以及隔离网络构成,同时实现功率分配和频率选择的功能。由于引入外部集总电容器,通过改变电容值可以独立控制每个通带的工作频率。其次,磁场主要集中于谐振器的谐振金属柱周围,减小了通带间的信号干扰,从而实现较好的通带间隔离。此外,采用奇偶模分析和耦合矩阵综合方法设计了该功分器的双通带响应。最后为验证设计的有效性,加工制作了一款四路双频带滤波功分器,两个通带中心频率分别工作于2.18 GHz和3.23 GHz,最小插入损耗分别为1.44 dB和2.63 dB。实测结果与仿真结果基本吻合。To meet the multiband and multichannel requirements of microwave devices in wireless communication systems,a compact dual-band filtering power divider was proposed for four-way applications based on electromagnetic bandgap(EBG)structure.The filtering power divider was consisted of eight pairs of EBG resonators,isolation resistors,and an isolation network.The proposed filtering power divider realized the functions of power splitting and frequency selection.It was possible to independently control the central frequency of each passband by changing the capacitance.Secondly,the magnetic field mainly surrounded the resonate posts,which reduced the signal interference between passbands and achieved better band-to-band isolation.In addition,the dual-band response of the presented power divider was designed by using the odd-even mode analysis method and coupling matrix synthesis.Finally,a four-way dual-band filtering power divider was fabricated and measured.The central frequencies of the two passbands are 2.18 GHz and 3.23 GHz,and the minimum insertion losses are 1.44 dB and 2.63 dB,respectively.The measured results are in good agreement with the simulation results.

关 键 词：电磁带隙谐振器 滤波功分器 四路 双频带 

分 类 号：TN713[电子电信—电路与系统]