基于微波网络参数的非均匀传输线终端响应研究  

Research on Terminal Response of Abruptly Non-Uniform Transmission Line Based on Microwave Network Parameters

作　　者：鲁合德 朱峰[2] 刘庆想[1] 李鑫[2] LU He-de;ZHU Feng;LIU Qing-xiang;LI Xin(School of Physics Science and Technology,Southwest Jiaotong University Chengdu 610031;School of Electrical Engineering,Southwest Jiaotong University Chengdu 610031)

机构地区：[1]西南交通大学物理科学与技术学院,成都610031 [2]西南交通大学电气工程学院,成都610031

出　　处：《电子科技大学学报》2018年第5期698-704,共7页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(U1434203)

摘　　要：为了研究电磁场对有损大地非均匀传输线终端响应的影响,以传输线模型为基础,应用微波网络参数转移矩阵推导了平面波入射条件下有损大地上突变型非均匀传输线终端响应公式。利用该公式可精确计算突变型非均匀传输线的终端响应大小。为了证明该理论的正确性,对有损大地上接有转换器的突变型非均匀传输线结构进行了理论分析计算。分别对不同电导率有损大地的情况进行了理论分析计算:不同电导率对终端感应电流的影响相差小于3dB。最后结合实际选取大地电导率的典型值0.01S/m对该非均匀传输线结构终端电流响应进行了实测。实测结果与理论结果对比,两者吻合较好,因此该微波网络转移矩阵方法特别适合对突变型非均匀传输线场线耦合终端响应的求解计算。In order to study the terminal response characteristics of abruptly non-uniform line on a lossy ground exposed in radiation field,the terminal response formula of abruptly non-uniform transmission line above a lossy ground is derived based on transmission line model and microwave network parameters transition matrix.The terminal response of the abruptly non-uniform line can be calculated accurately based on the derived formula.To confirm the validity of the theory,the abruptly non-uniform transmission line with a converter is analyzed and calculated theoretically.The terminal response of transmission line structure with different conductivity is analyzed and calculated theoretically:the influence of different conductivities on the terminal conducted current is less than 3dB.Based on practice,the terminal response of non-uniform transmission line with a converter above a lossy ground,whose conductivity is 0.01S/m,is measured.It is shown that the theoretical results are in agreement with the measured results.This proves that the method of microwave network transition matrix in this paper is especially suitable for the calculation of the response of the response of the abruptly non-uniform lines.

关 键 词：突变型非均匀传输线 转换器 微波网络参数 转移矩阵 传输线模型 

分 类 号：TN97[电子电信—信号与信息处理]