用于运动式微波无线充电的整流天线研究

发布时间：2018-04-19 11:03

  本文选题：无线充电 + 整流天线　； 参考：《中国矿业大学》2014年硕士论文

【摘要】：目前有线供电是广泛应用的供电方式，随着科技进步有线供电已经无法全面满足应用需求，因微波无线充电摆脱了有线供电中导线拖拉缠绕限制，大大提高了充电的灵活性。随着物联网技术的发展，煤矿井下无线传感器的使用日益增多，为提高无线传感器的生命周期，同时免去为动则为上千个无线传感器更换电池的不便，，可采用微波无线充电的方式为传感器补充电能。本文在分析微波无线充电的发展状况之后详细研究了微波无线充电中接收端的分析、设计和测试方法。 首先，本文介绍了微波无线充电的发展概况及相关的基础知识，阐述了其接收端的组成构成，鉴于微带结构紧凑的优点接收端整体采用微带结构。其次详细介绍了微带天线的设计方法与仿真手段，为克服天线仿真结果和实际制作时的偏差，提出了一种有效的频偏校正方法，成功设计了工作在5.8GHz的微带天线，并通过实测验证了频偏校正方法的可行性。接着介绍了微带滤波器和二倍压整流电路的分析设计方法，提出了准确测量大功率条件下整流电路输入阻抗的模型并分析了误差来源，给出了能够进行准确测量的条件，同时提出了一种低成本的去嵌入阻抗测量方法。随后根据阻抗测量结果设计了阻抗匹配环节，阻抗测量的准确度是阻抗匹配基础，阻抗匹配电路的成功设计也印证了整流电路输入阻抗模型和去嵌入阻抗测量方法的准确性。最终将各部分集成，制作实际的微波无线充电接收端，实测结果表明该接收端适合为低功耗功耗设备提供无线充电。
[Abstract]:Wire power supply is a widely used power supply mode. With the development of science and technology, wire power supply has been unable to fully meet the needs of the application, because microwave wireless charging gets rid of the limitation of wire dragging and winding in wired power supply, and greatly improves the flexibility of charging.With the development of the Internet of things technology, the use of wireless sensors in underground coal mines is increasing day by day. In order to improve the life cycle of wireless sensors and avoid the inconvenience of replacing batteries for thousands of wireless sensors,Microwave wireless charging can be used to replenish the electric energy for the sensor.After analyzing the development of microwave wireless charging, this paper studies in detail the analysis, design and test methods of the receiver in microwave wireless charging.Firstly, this paper introduces the development of microwave wireless charging and related basic knowledge, and describes the composition of the receiver. In view of the advantages of compact microstrip structure, the whole receiver adopts microstrip structure.Secondly, the design method and simulation method of microstrip antenna are introduced in detail. In order to overcome the deviation between simulation results and actual fabrication, an effective frequency offset correction method is proposed, and the microstrip antenna working in 5.8GHz is designed successfully.The feasibility of the frequency offset correction method is verified by actual measurement.Then, the analysis and design methods of microstrip filter and double voltage rectifier circuit are introduced, the model of accurate measurement of input impedance of rectifier circuit under high power condition is put forward, the error source is analyzed, and the conditions for accurate measurement are given.At the same time, a low cost de-embedding impedance measurement method is proposed.Then the impedance matching link is designed according to the results of impedance measurement. The accuracy of impedance measurement is the basis of impedance matching. The successful design of impedance matching circuit also verifies the accuracy of the input impedance model of rectifier circuit and the method of de-embedding impedance measurement.Finally, every part is integrated to make the actual microwave wireless charging receiver. The experimental results show that the receiver is suitable for wireless charging of low power consumption devices.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN822


本文编号：1772825