摘要
设计了一个能够提取人体微波心动图的"微波心动图仪".该仪器使用1150 MHz微波连续波作为载波信号,用计算机控制的零平衡方法进行未调制载波抵消,用检测前向散射波(透射波)的方法绘制心动图.所研制的样机具有结构简单、灵敏度高、噪声小的特点.还给出了该样机采集的微波心动图样例,并进行了讨论.
A design of Microwave Cardio Graph Meter (MCG), by which human MCG signal can be extracted is proposed in this paper. Features: 1 150 MHz continuous carrier wave; Cancellation of un-modula-ted carrier wave by Zero-balance technique; Using forward scattering wave to improve performance. Experiments show that: the apparatus is simple in structure, and works steadily with high sensitivity and low noise. The MCG graphs are presented and discussed in detail.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2004年第4期40-47,共8页
Journal of East China Normal University(Natural Science)
基金
国家自然科学基金(39970210)
关键词
微波心动图
前向散射
未调制载波抵消
microwave cardio graph
forward scattering
cancellation of un-modulated carrier wave
