小型化三耦合线Marchand巴伦的等效模型分析与验证  

Analysis and Validation of Equivalent Model for Miniaturized Three-coupled-line Marchand Balun

作　　者：林震 年夫顺 张胜洲 贾定宏 邓建钦 LIN Zhen;NIAN Fushun;ZHANG Shengzhou;JIA Dinghong;DENG Jianqin(School of Instrument and Electronics,North University of China,Taiyuan 030051,China;CETC Instruments Co.,Ltd.,Qingdao 266555,China;Technology on Electronic Test&Measurement Laboratory,Qingdao 266555,China)

机构地区：[1]中北大学仪器与电子学院,太原030051 [2]中电科仪器仪表有限公司,山东青岛26655 [3]电子测试技术重点实验室,山东青岛26655

出　　处：《电讯技术》2020年第4期470-476,共7页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61727804);中国电科技术创新基金项目(KJ1801008)。

摘　　要：为了实现三耦合线Marchand巴伦的快速设计,缩小巴伦的尺寸,提出了一种简化的三耦合线Marchand巴伦等效模型及小型化设计方法。该等效模型将复杂的三耦合线的S参数散射矩阵的计算问题简化为对两个并联的平行耦合线的S参数散射矩阵的计算。为了验证该模型和设计方法的有效性,采用0. 1μm砷化镓pHEMT (pseudomorphic High Electron Mobility Transistor)工艺制作了一款75~110 GHz的单平衡混频芯片,最终应用于单平衡混频器的巴伦耦合线长度被缩减为中心频率1/4波长的44%。良好的混频器性能和紧凑的芯片面积证明了所提三耦合线巴伦的等效模型和设计方法能够为单片集成微波电路芯片的设计提供指导作用。In order to quickly design the Balun and reduce the Balun’s size,the equivalent model and design method are presented. The equivalent model simplifies the calculation of S-parameter scattering matrix of complex three-coupled lines to that of two parallel coupled lines. To verify the equivalent model and design method,a 75 ~ 110 GHz single-balanced mixer fabricated in 0. 1 μm GaAs pseudomorphic high electron mobility transistor(p HEMT) process is developed. The 75 ~ 110 GHz three coupled-line Marchand Balun is the crucial element in the mixer. Own to the equivalent model,the size of the Marchand Balun is colossally reduced to 44% compared with the 1/4 wavelength of central frequency. The wonderful performance and compact size of the mixer chip prove that the equivalent model and design method proposed in this paper can provide guidance for the design of monolithic microwave integrated circuit(MMIC).

关 键 词：三耦合线Marchand巴伦 小型化设计 W频段单平衡混频器 

分 类 号：TN773.2[电子电信—电路与系统]