Research On The Rectenna For Mobile Microwave Wireless Power Transmission

Wired power supply is widely used current, with the developing of technologyit is cannot fully meet the application requirements. Because of the wireless feature,mobile wireless microwave power transmission increases the flexibility of the charge.With the developing of IoT, more and more wireless sensors are used in coal mine.In order to extend the working hours of wireless sensors in wireless sensor networks,while eliminating the need to replace batteries in thousands of wireless sensors,mobile microwave wireless charging can be a good method to support power for thewireless sensors. After analyzing the development of microwave wireless charging,this thesis analyzed the design and testing methods of receiving end in microwavewireless charging system.Firstly, this thesis describes the overview of the development of microwavewireless power transmission and related basic theory. And elaborate the compositionstructure of wireless power transmission receiving end. Secondly, Describes thedesign and simulation means of microtrip antenna. In order to eliminate the resonantfrequency differences between simulated and measured when making in-kind, thisthesis propose an effective method for frequency offset correction. And successfuldesign a microstrip antenna work at5.8GHz. Thirdly, introduction the analysis anddesign methods of microstrip filter and voltage doubling rectifier circuit. Propose themodel of impedance measurement of rectifier circuit under high input powerconditions. Propose a low-cost method of de-embeding impedance measurement.Then impedance matching network is designed on the base of the measuredimpedance. Finally, integrate each part into complete receiving end. Experimentalresults show that the receiving end is suitable for provide energy for low-powerpower devices...