發(fā)布時間：2018-04-19 11:03

  本文選題：無線充電 + 整流天線�。� 參考：《中國礦業(yè)大學》2014年碩士論文

【摘要】：目前有線供電是廣泛應用的供電方式，隨著科技進步有線供電已經(jīng)無法全面滿足應用需求，因微波無線充電擺脫了有線供電中導線拖拉纏繞限制，大大提高了充電的靈活性。隨著物聯(lián)網(wǎng)技術的發(fā)展，煤礦井下無線傳感器的使用日益增多，為提高無線傳感器的生命周期，同時免去為動則為上千個無線傳感器更換電池的不便，，可采用微波無線充電的方式為傳感器補充電能。本文在分析微波無線充電的發(fā)展狀況之后詳細研究了微波無線充電中接收端的分析、設計和測試方法。 首先，本文介紹了微波無線充電的發(fā)展概況及相關的基礎知識，闡述了其接收端的組成構成，鑒于微帶結構緊湊的優(yōu)點接收端整體采用微帶結構。其次詳細介紹了微帶天線的設計方法與仿真手段，為克服天線仿真結果和實際制作時的偏差，提出了一種有效的頻偏校正方法，成功設計了工作在5.8GHz的微帶天線，并通過實測驗證了頻偏校正方法的可行性。接著介紹了微帶濾波器和二倍壓整流電路的分析設計方法，提出了準確測量大功率條件下整流電路輸入阻抗的模型并分析了誤差來源，給出了能夠進行準確測量的條件，同時提出了一種低成本的去嵌入阻抗測量方法。隨后根據(jù)阻抗測量結果設計了阻抗匹配環(huán)節(jié)，阻抗測量的準確度是阻抗匹配基礎，阻抗匹配電路的成功設計也印證了整流電路輸入阻抗模型和去嵌入阻抗測量方法的準確性。最終將各部分集成，制作實際的微波無線充電接收端，實測結果表明該接收端適合為低功耗功耗設備提供無線充電。
[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.
【學位授予單位】：中國礦業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN822


本文編號：1772825