作者：吕建新, 王志刚, 朱肇轩

作者单位：电子科技大学自动化工程学院, 四川 成都 611731

关键词：微波成像; 天线; 近场成像; 有限元共焦算法

摘要：

针对早期乳腺癌检测等近场目标的探测成像,设计了一种基于2.45 GHz连续波信号的微波近场成像实验系统,主要由硬件电路和成像算法组成。系统电路用小体积、高性能和低成本的射频微波集成芯片实现,大大缩小了系统的体积并降低了成本,电路由天线模块、收发模块和数据采集控制模块构成。成像算法采用有限元微波共焦算法,完成对被测区域目标的探测成像。

Active microwave near-field imaging system

LV Jian-xin, WANG Zhi-Gang, ZHU Zhao-xuan

School of Automation, University of Electronic Science and Technology of China, Chengdu 611731, China

Abstract: The microwave near-field imaging system is introduced in this article, which is designed on the basis of 2.45 GHz continuous wave signal and can be applied to breast-cancer detection and imaging. The design mainly includes the circuits of hardware and the algorithm of imaging. The circuits are designed using the RF and microwave integrated chip which is of small volume, high performance and low-cost, and consist of three modules, i.e., antenna, transceiver and data acquisition and control module. The algorithm is designed using finite-element microwave confocal imaging. Finally, the detection and imaging of target are realized.

Keywords: microwave imaging; antenna; near-field imaging; finite element confocal imaging

2012, 38(4): 65-68  收稿日期: 2011-5-26;收到修改稿日期: 2011-9-7

基金项目: 

作者简介: 吕建新(1985-),男,山西晋中市人,硕士研究生,专业方向为数据采集、微波近场成像系统。

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