CAJ | 학술논문

针对基于 GaAs晶体管的大功率微波整流电路，设计了一种应用于大功率微波无线输能系统的整流电路。该大功率微波整流电路基于微带结构，工作频率为2.45 GHz，具有质量轻，整流输出功率大的特点。在不同微波输入功率和负载下进行测量，发现当输入微波功率为30 dBm，负载为38Ω时，整流电路获得了测量过程中最大整流效率的41%；当输入微波功率为34 dBm，负载为23Ω时整流电路得到测量过程中获得的最高直流功率输出28.7 dBm。通过完善和改进电路，可以进一步提高整流的效率，并应用于高功质比的微波整流天线。
침대기우 GaAs정체관적대공솔미파정류전로，설계료일충응용우대공솔미파무선수능계통적정류전로。해대공솔미파정류전로기우미대결구，공작빈솔위2.45 GHz，구유질량경，정류수출공솔대적특점。재불동미파수입공솔화부재하진행측량，발현당수입미파공솔위30 dBm，부재위38Ω시，정류전로획득료측량과정중최대정류효솔적41%；당수입미파공솔위34 dBm，부재위23Ω시정류전로득도측량과정중획득적최고직류공솔수출28.7 dBm。통과완선화개진전로，가이진일보제고정류적효솔，병응용우고공질비적미파정류천선。
A microwave GaAs transistor rectifier at 2.45 GHz based on microstrip lines is presented in this paper. The GaAs transistor has enhanced the rectifier power capacitance greatly. The proposed rectifier bears a power to weight ratio much higher than conventional rectifiers based on Schottky diodes. The measured results show that the rectifier achieves 41% of its highest rectifying efficiency when the input microwave power reaches 30 dBm and the DC load is 38Ω;the rectifier reaches its highest DC output power 28.7 dBm with an input microwave power at 34 dBm and a DC load of 23Ω. The GaAs transistor rectifiers will be applied to microwave power transmission systems with strict power to weight ratio requirements. The rectifiers may own higher conversion efficiency with improved circuit design and can be applied to high power to weight rectennas.