Journal of East China Normal University(Natural Sc ›› 2004, Vol. 2004 ›› Issue (4): 40-47.

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Design and Development of A Microwave Cardio Graph Meter

HUNG Yong1，AN Tong-yi1，QIAN Jian2，FAN Ming-jie1   

  1. 1. Information Science and Technology College，East China Normal University, shanghai 200062,China; 2. Department of Electrical Science and Engineering, Nanjing University, Nanjing 210093,China
  • Received:2003-02-28 Revised:2003-04-15 Online:2004-12-25 Published:2004-12-25
  • Contact: HUNG Yong

Abstract: A design of Microwave Cardio Graph Meter (MCG)，by which human signal can be extracted is proposed in this paper. Features: 1 150 MHz continuous ca rrter wave; Cancellation of un-modulated 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.

Key words: forward scattering, cancellation of un-modulated carrier wave, microwave cardio graph, forward scattering, cancellation of un-modulated carrier wave

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