English

应用科学学报 ›› 2011, Vol. 29 ›› Issue (5): 508-511.doi: 10.3969/j.issn.0255-8297.2011.05.011

• 电子技术 • 上一篇    下一篇

一种用于微波输能的小型化整流电路

吕艳青， 杨雪霞， 周 鋆   

  1. 上海大学 通信与信息工程学院，上海 200072
  • 收稿日期:2010-05-17 修回日期:2010-11-30 出版日期:2011-09-28 发布日期:2011-09-30
  • 作者简介:杨雪霞，教授，研究方向：微带天线、微波电路与计算电磁学，E-mail: xxyang@staff.shu.edu.cn
  • 基金资助:

    上海市重点学科资助项目基金（No.S30108）资助

Miniature Rectification Circuit for Microwave Power Transmission

Lv Yan-qing,  YANG Xue-xia,  ZHOU Jun   

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
  • Received:2010-05-17 Revised:2010-11-30 Online:2011-09-28 Published:2011-09-30

PDF

2150

被引次数

8

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.

关键词: 转换效率, 整流电路, 片状元件, 小型化

Abstract:

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.

Key words: conversion efficiency, rectifying circuit, chip element, miniaturization