一种用于微波输能的小型化整流电路  

Miniature Rectification Circuit for Microwave Power Transmission

作　　者：吕艳青[1] 杨雪霞[1] 周鋆[1] 

机构地区：[1]上海大学通信与信息工程学院,上海200072

出　　处：《应用科学学报》2011年第5期508-511,共4页Journal of Applied Sciences

基　　金：上海市重点学科资助项目基金(No.S30108)资助

摘　　要：提出一种用片状元件实现的小型化微带线整流电路.用ADS2006A电路仿真软件对整流电路进行分析和设计,100 mW输入功率时在5.8 GHz工作频率上得到72%的RF-DC(射频-直流)转换效率.但是理想的ADS仿真模型造成工作频率偏移和阻抗失配,使得测试效率很低.通过原理图版图联合仿真分析提出电感补偿法,在5.7 GHz频率测量得到64%的RF-DC转换效率,与仿真值较接近.该整流电路具有小型化、易集成的特点,可广泛应用于无线传感器、RFID等设备的无线输能.A miniaturized rectifying circuit using microstrip lines and chip elements is proposed. The circuit is analyzed and designed using ADS2006A software. RF-DC conversion efficiency of 72% is obtained at 5.8 GHz with 100 mW input power. However, the measured efficiency is much lower, which is caused by frequency shift and impedance mismatch of the ideal ADS model. By co-simulation of theory model and practical printed image, we propose inductance compensation to improve conversion efficiency. The measured value reaches 64% at 5.7 GHz, near the simulated result. The rectifying circuit is compact in structure and easy to be integrated. It can be used for wireless power transmission in wireless sensor networks and RFID applications.

关 键 词：转换效率 整流电路 片状元件 小型化 

分 类 号：TN713[电子电信—电路与系统]