LVDS远距离通信电缆参数模型研究  

Research on modeling long-distance communication cable of LVDS

作　　者：方炜[1,2] 任勇峰 赵利辉[1,3] 储成群[1] FANG Wei;REN Yongfeng;ZHAO Lihui;CHU Chengqun(National Key Laboratory for Electronic Measurement Technology, North University of China,Taiyuan 030051,China;School of Electrical and Control Engineering, North University of China, Taiyuan 030051,China;Software School, North University of China, Taiyuan 030051,China)

机构地区：[1]中北大学电子测试技术国家重点实验室,山西太原030051 [2]中北大学电气与控制工程学院,山西太原030051 [3]中北大学软件学院,山西太原030051

出　　处：《中国测试》2018年第12期147-151,共5页China Measurement & Test

基　　金：国家自然科学基金项目(61771434);重点实验室基金项目(61420010414162001002);山西省高等学校科技创新项目(2017156)

摘　　要：在航空航天领域,工程特殊性要求数据传输具备极高的可靠性。为实现测量数据的高速远距离可靠传输,该文针对通用的两种双绞线缆,分别采用BT0、KPN和KM3 3种不同线缆参数模型进行建模,利用最小二乘法完成相应的参数估计,分析3种模型在频率高达几百兆赫兹的范围内信号的衰减特性和模型精度。实验结果表明,所采用的3种模型表征的衰减特性与矢量网络分析仪的实测结果具有较好的一致性。其中,KM3模型具有更好的精度,可为进一步分析LVDS信号实现高速远距离传输提供依据。In the field of aerospace,engineering particularity requires high reliability of data transmission.To realize high speed,long distance and reliable of measurement data transmission,this paper introduced three different models of BT0,KPN and KM3for two twisted pair cables,estimated corresponding parameters by least square method,and analyzed attenuation characteristics and modeling precision in range up to several hundred megahertz.The experiment results indicate that the attenuation characteristic based on three models has good consistency with the measured results of vector network analyzer(VNA).The proposed method provides a strong basis to LVDS transmission.

关 键 词：双绞线 衰减特性 线缆模型 矢量网络分析仪 

分 类 号：TN919.1[电子电信—通信与信息系统]