위상 배열 무선 전력 전송 용 초고주파 마그네트론 주파수 및 위상 제어 Frequency and Phase Control of a Microwave Magnetron for Phased Array Wireless Power Transfer-Daejeon University of Science and Technology -2020

위상 배열 무선 전력 전송 용 초고주파 마그네트론 주파수 및 위상 제어 Frequency and Phase Control of a Microwave Magnetron for Phased Array Wireless Power Transfer 

 Author Kim Do-kyun Issues Daejeon University of Science and Technology Graduate School, 2020 Degree thesis matters Thesis (Master's)-- University of Science and Technology Graduate School : Energy and Power Conversion Engineering 2020.

 Year of issue 2020 

 writing language Korean 

 ABSTRACT 

Space solar power system (SSPS) requires to transfer electrical energy from space to the Earth. For this purpose, long-range wireless power transfer technology based on microwave phased array has been studied. The unit device for phased array system must have high energy conversion efficiency per volume. Magnetron based on vacuum electronics can be an optimal device that meets this requirement. Magnetron has higher DC-RF conversion efficiency than solid state devices have. But it suffers from frequency and phase noise so that it has limitations to using it as a unit device for a phased array system. In this paper, stabilization & control of 2.45 GHz Magnetron’s frequency and phase are reported. In order to stabilize the Magnetron oscillation frequency, we designed a high voltage filter for Magnetron power supply (SM445). Then we applied injection locking technique to control Magnetron’s frequency. A phase locking loop (PLL) is constructed for more precise phase stabilization. Phase stability of 0.3° is achieved by PLL based on injection locking technique. We expect our accomplishment can contribute to microwave-based phased array wireless power transfer.

LINK: https://www.mediafire.com/file/jmjyxhqqsi013xn/Frequency+and+Phase+Control+of+a+Microwave+Magnetron+for.pdf/file