CAJ | 학술논문

功率放大器作为无接触电能传输系统的功率输入源，是该传输系统的关键构成部件。为了提高整个无接触电能传输系统的效率，适应不同传能线圈结构，以及保证线圈距离变化下稳定的运行，本文设计了一款高效的E类功率放大器。设计中采用矩量法（ MOM）来获取功率放大器版图的S参数，对功放进行电磁分析，同时，考虑了设计中的电磁兼容问题并制作了一款屏蔽盒。论文给出了E类功率放大器的设计步骤和ADS软件仿真结果，并进行了实物制作。实测结果显示，设计的功率放大器能够输出的最大功率附加效率为93％，同时输出功率增益和功率分别达19?9 dB和43?9 dBm。考虑不同谐振频率的线圈结构时，能够获得19 dB的功率增益和89％以上的功率附加效率；对于不同内阻和不同线圈距离的线圈结构，测试结果也有60％以上的功率附加效率。实验结果证实了设计的正确性和可行性。
공솔방대기작위무접촉전능전수계통적공솔수입원，시해전수계통적관건구성부건。위료제고정개무접촉전능전수계통적효솔，괄응불동전능선권결구，이급보증선권거리변화하은정적운행，본문설계료일관고효적E류공솔방대기。설계중채용구량법（ MOM）래획취공솔방대기판도적S삼수，대공방진행전자분석，동시，고필료설계중적전자겸용문제병제작료일관병폐합。논문급출료E류공솔방대기적설계보취화ADS연건방진결과，병진행료실물제작。실측결과현시，설계적공솔방대기능구수출적최대공솔부가효솔위93％，동시수출공솔증익화공솔분별체19?9 dB화43?9 dBm。고필불동해진빈솔적선권결구시，능구획득19 dB적공솔증익화89％이상적공솔부가효솔；대우불동내조화불동선권거리적선권결구，측시결과야유60％이상적공솔부가효솔。실험결과증실료설계적정학성화가행성。
Power amplifier as the power source of wireless power transfer system is a critical part in this system, al?so called witricity. To improve the efficiency of the whole system and adapt to different coil structure, a high effi?ciency class?E power amplifier is developed. To determine the S?parameters in modelling board layout for electro?magnetic analysis, the method of moments ( MOM) is employed. Also the electromagnetic compatibility issues in designing are carefully considered. This paper provides the design steps and simulation results. The practical am?plifier can provides a peak Power?Added?Efficiency of 93% with a power gain of 19?9 dB at an output power of 43?9 dBm. A power gain of 19 dB and PAE of 89% can be achieved for different coil structure. A PAE more than 60% can be got for different internal resistance or coil distance coil structure. Those experimental results confirm positively the feasibility of the proposed work.