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- Hyoung Jong Kim, Ki Ho Kim, Yun Seok Hong, and Jin Joo Choi.
- Department of Wireless Communications Engineering, Kwangwoon University, 447-1, Wolgye-Dong, Nowon-Gu, Seoul 139-701, Korea.
- Rev Sci Instrum. 2007 Oct 1; 78 (10): 104703.
AbstractThis article introduces a low-cost phase detection radar aimed at measuring the human heartbeat and respiration signals without any physical connections to the human body. A continuous-wave radar targeting the chest will detect the phase difference, resulted by the time-varying target position of the heartbeat, between the transmitted signal and the reflected signal. We have tested the developed radar to measure the heartbeat and respiration signals at a distance of about 40 cm from the chest.
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