高频环境下多导体传输线研究

发布时间：2018-06-26 06:01

本文选题：多导体传输线 + 电路模型　；参考：《哈尔滨工业大学》2015年硕士论文

【摘要】：对于通信设备制造商,从设备研制到投入应用的过程中,设备测试是其中一个不可缺少的环节。在测试之前开发人员必须先搭建测试环境,这将使用到大量的线缆。但是线缆本身存在局限性:一方面,线缆价格昂贵,厂家购买线缆需要花费大量的财力;另一方面,测试过程中测试场景不断切换需要人工频繁地搬运线缆来完成,而线缆本身很重人工搬运起来麻烦。线缆的局限性导致测试的效率极其低下。为了解决线缆带来的测试效率低问题,本文对测试环境中使用的传输线进行研究。本文对测试环境中使用的多导体传输线进行研究,建立了多导体传输线的等效电路模型。该电路模型综合了多个单导体传输线模型与传输线的干扰模型。对于单导体传输线模型,本文通过无源网络综合的方法建立了一个两级对称的无源网络。对于传输线之间的干扰模型,本文通过对传输线之间的耦合路径分析建立了电容矩阵和电感矩阵数学模型,并基于实际传输线分别采用电荷法和能量法将该数学模型进行量化。随后本文将该多导体传输线等效电路模型进行了应用,设计了传输线仿真板。该传输线仿真板能实现线缆的单个端口或多个端口的衰减和串扰性能仿真,且其相对于市面上的传输线仿真仪在工作频率范围上有所提升。本文设计的传输线仿真板经实际验证发现其有效工作频率范围为0~85 MHz,而目前市场上的传输线仿真仪有效工作频率范围仅能达到0~30MHz。该传输线仿真板目前应用于华为技术有限公司,主要用于代替实际线缆接入到测试环境中从而解决实际线缆引发的问题。
[Abstract]:For communication equipment manufacturers, equipment testing is an indispensable part in the process of equipment development and application. Developers must build a test environment before testing, which will use a large number of cables. However, the cable itself has its limitations: on the one hand, the cable price is expensive, manufacturers need to spend a lot of money to buy the cable; on the other hand, the continuous switching of test scenarios during the testing process requires frequent manual handling of the cable. The cable itself is very heavy manual handling trouble. The limitation of cable leads to the inefficiency of testing. In order to solve the problem of low test efficiency caused by cable, the transmission line used in test environment is studied in this paper. In this paper, the multi-conductor transmission line used in the test environment is studied, and the equivalent circuit model of the multi-conductor transmission line is established. The circuit model integrates several single conductor transmission line models and interference models of transmission lines. For a single conductor transmission line model, a two-stage symmetric passive network is established by the method of passive network synthesis. For the interference model between transmission lines, the mathematical models of capacitance matrix and inductance matrix are established by analyzing the coupling path between transmission lines, and the mathematical models are quantized by charge method and energy method respectively based on the actual transmission lines. Then the equivalent circuit model of the multi-conductor transmission line is applied and the transmission line simulation board is designed. The transmission line simulator can simulate the attenuation and crosstalk performance of a single port or multiple ports of the cable, and its working frequency range is improved compared with the transmission line simulator on the market. It is found that the effective operating frequency range of the transmission line simulator designed in this paper is 0 ~ 85 MHz, but the effective working frequency range of the transmission line simulator in the market is only 0 ~ 30 MHz. The transmission line emulation board is currently used in Huawei Technology Co., Ltd. It is mainly used to replace the actual cable and connect to the test environment to solve the problem caused by the actual cable.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN811

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