基于双导体耦合线Marchand巴伦的快速建模与设计  

Fast Modeling and Design of Marchand Balun Based on Two-Conductor Coupled Line

作　　者：白雪[1] 陈书雄 徐雷钧[1,2] 黄波[1] 

机构地区：[1]江苏大学电气信息工程学院,镇江212013 [2]东南大学毫米波国家重点实验室,南京210096

出　　处：《微波学报》2016年第2期43-47,67,共6页Journal of Microwaves

基　　金：中国博士后科学基金(2015M570414);教育部留学回国人员科研启动基金;东南大学毫米波国家重点实验室开放课题(K201620)

摘　　要：针对Marchand巴伦模型参数提取效率低,耗时长的问题,本文提出了一种快速提取Marchand巴伦模型参数的方法。传统的耦合线建模过程中,当耦合线的物理尺寸,如长度、宽度、间距发生变化,需要重新进行电磁场仿真,占据大量的计算机资源和仿真时间。本文首先基于c、π模表征的耦合线分布模型构建了Marchand巴伦模型,通过对耦合线全波电磁场仿真获得的模型参数提取结果进行数据分析和拟合,找出耦合线物理尺寸和模型参数之间的关系,建立对应方程,避免在巴伦设计优化过程中反复进行电磁场仿真,达到快速设计Marchand巴伦的目的。使用该方法基于PCB板设计了中心频率为2.4 GHz的巴伦进行验证,测试结果表明该方法提取的模型参数具有较好的精度,能够满足巴伦的快速设计需求。In view of the low efficiency and time consuming problem of the parameter extraction of the Marchand balun,a fast method for extracting the parameters of the model is proposed. In traditional ways,the model parameters must be extracted again when the line width,space or length are changed. Therefore,the electromagnetic（EM）simulation can be time consuming and wasting of resources. Based on the c-mode and π-mode theory,the model of Marchand balun is built in the first. The relationship between the model parameters and the size of balun is studied by analyzing a large number of simulated data. Then a series of dependent equations are fit out in Matlab. By using such equations,the model parameters can be calculated quickly instead of extracting from EM simulation. Thus,the design period for balun can be reduced. To verify the model,a 2.4GHz Marchand balun is designed on PCB board. Compared with the measurement results,the model shows good accuracy and can be a fast solution for Marchand balun design.

关 键 词：微波 Marchand巴伦 耦合线 电路模型 参数提取 

分 类 号：TN710[电子电信—电路与系统]