基于双方环结构的超宽带平衡滤波器设计  

Design of Ultra-Wideband Balanced Bandpass Filter Based on Dual-Square Ring Configuration

作　　者：钱莉荣[1,2] 豆亚稳 姜悦晨 李夏清 张伟 李翠平[1,2] 田亚会[5] 李红浪 王荔田 QIAN Lirong;DOU Yawen;JIANG Yuechen;LI Xiaqing;ZHANG Wei;LI Cuiping;TIAN Yahui;LI Honglang;WANG Litian(Tianjin Key Laboratory of Film Electronic&Communication Devices,School of Electrical and Electronic Engineering,Tianjin University of Technology,Tianjin 300384,China;Engineering Research Center for Optoelectronic Devices and Communication Technology of Ministry of Education,Tianjin University of Technology,Tianjin 300384,China;China United Network Communications Group Co.,Ltd,Beijing 100038,China;The 26th Institute of China Electronic Technology Group Corporation,Chongqing 400060,China;Institue of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;National Center for Nanoscience and Technology,Beijing 100190,China;GBA Research Innovation Institute for Nanotechnology,Guangzhou 510530,China;Guangdong Guang Naxin Technology Co.,Ltd,Guangzhou 510530,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]天津理工大学集成电路科学与工程学院,光电器件与通信技术教育部工程研究中心,天津300384 [3]中国联合网络通信有限公司,北京100038 [4]中国电子科技集团公司第二十六研究所,重庆400060 [5]中科院声学研究所,北京100190 [6]国家纳米科学中心,北京100190 [7]广东粤港澳大湾区国家纳米科技创新研究院,广东广州510530 [8]广东广纳芯科技有限公司,广东广州510530

出　　处：《压电与声光》2022年第5期713-717,721,共6页Piezoelectrics & Acoustooptics

基　　金：广东省重点领域研发计划基金资助项目(2020B0101040002);广州市重点研发计划项目(202206070001);大学生创新创业基金项目(202110060152)。

摘　　要：平衡滤波器因具有卓越的抗噪声及抗电磁干扰能力而在繁杂频谱环境下的低噪通信系统中显得至关重要。该文提出了一款具有共模抑制特性的平衡滤波器,通过差共模理论结合导纳矩阵及传输矩阵完成了分析设计。该滤波器中心频率为1.4 GHz,相对带宽可达74.3%,覆盖2G、GPRS、3G及4G LTE频段。同时该滤波器的边带具有两对传输零点,故其具有理想的边带滚降速度及边带抑制水平。滤波器全差模通频带内共模信号抑制水平均优于10 dB,差模阻带抑制优于20 dB,电路尺寸仅为0.17λ_(g)×0.17λ_(g)。Owing to the excellent noise immunity and electromagnetic interference immunity characteristics,balanced filters has become vital key building block in low-noise communication systems in complex spectrum circumstance.In this paper,a balanced bandpass filter with common mode suppression is proposed and designed by using differential/common mode theory,admittance matrix and transmission matrix analysis.The centered frequency of presented balanced filter is located at 1.4 GHz and its fractional bandwidth can reach 74.3%,which cover 2G,GPRS,3G,and 4G LTE bands.Since two pairs of transmission zeros is introduced separately lower and upper sideband,the developed balanced bandpass filter is of high roll-off rate and sharp shirt.In presented balanced bandpass filter,10 dB of common mode suppression within differential mode passbands is achieved.The differential mode out of band suppression level is higher than 20 dB,and the circuit size of exploited balanced filter is only occupies 0.17λ_(g)×0.17λ_(g).

关 键 词：平衡滤波器 超宽带 共模抑制 方环谐振器 高选择性 

分 类 号：TN384[电子电信—物理电子学] TN713