小型化宽阻带5G半集总混合滤波器设计  

Design of compact semi-lumped mixed bandpass filter with wide stopband for 5G application

作　　者：王荔田 王之 钱莉荣[1] 李翠平[1] 熊阳 李丹 何明[3] 余保华 田亚会[5] 李红浪 WANG Litian;WANG Zhi;QIAN Lirong;LI Cuiping;XIONG Yang;LI Dan;HE Ming;YU Baohua;TIAN Yahui;LI Honglang(Tianjin Key Laboratory of Film Electronic&Communication Devices,School of Electrical and Electronic Engineering,Tianjin University of Technology,Tianjin 300384,China;Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control,School of Mechanical Engineering,Tianjin University of Technology,Tianjin 300384,China;College of Electronic Information and Optical Engineering,Nankai University,Tianjin 300350,China;Sun Create Electronics Co.,Ltd,Hefei 231200,China;Institue of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;National Center for Nanoscience and Technology,Beijing 100190,China)

机构地区：[1]天津理工大学集成电路科学与工程学院薄膜电子与通信器件天津市重点实验室,天津300384 [2]天津理工大学机械工程学院,天津300384 [3]南开大学电子信息与光学工程学院,天津300350 [4]四创电子股份有限公司,合肥231200 [5]中国科学院声学研究所,北京100190 [6]国家纳米科学中心,北京100190

出　　处：《电波科学学报》2024年第4期769-776,共8页Chinese Journal of Radio Science

基　　金：广州市重大科技专项项目(202206070001);广东省重点领域研发计划项目(2020B010140002)。

摘　　要：面向5G无线通信应用设计了一款微带半集总混合宽阻带带通滤波器。该滤波器阻带可扩展至5G毫米波频段,具有优良的带外抑制、结构紧凑及尺寸小巧的特点。搭建了集总元件的高频电路模型并完成了集总元件的路-场联合仿真,最终实现了由十字加载谐振器混合集总LC并联谐振电路而成的宽阻带滤波器。滤波器的中心频率位于4.08 GHz,通频带覆盖3.96~4.2 GHz,位于目前用于5G室内覆盖的N77频段。滤波器具有极广的阻带抑制特性,且优于20 dB抑制水平的上阻带范围可达22 GHz。滤波器有效电路尺寸仅为5.125mm×7.625 mm,插入损耗水平较低(0.54 dB),具有良好的选择性,适用于高性能5G通信系统应用。This article designs a semi-lumped mixed micro-strip band-pass filter with wide stopband for 5G wireless communication applications.The stopband of the proposed filter can be extended to the 5G millimeter wave frequency band with excellent out of band suppression,delicate structure,and compact size.This article analyzes the lumped device model under high-frequency conditions and achieves co-simulation of circuit model and field model.Finally a wide stopband bandpass filter composed of a cross loaded resonator mixed lumped LC parallel resonant circuit is implemented.The center frequency of the filter is located at 4.08 GHz,with a passband coverage of 3.96 GHz to 4.2 GHz.The designed passband locates in the N77 frequency band currently applied for 5G indoor coverage.The filter has extremely wide stopband suppression characteristics and upper stopband range exceeding 20 dB suppression level up to 22 GHz is approached.In addition,the filter has a compact device size of only 5.125 mm×7.625 mm effective circuit size,a lower insertion loss level(0.54 dB)and good selectivity which is suitable for 5G communication system application.

关 键 词：集总混合微带 带通滤波器 带外抑制 小型化 5G 

分 类 号：TN815[电子电信—信息与通信工程]