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http://dx.doi.org/10.5515/KJKIEES.2010.21.2.208

Novel 10 GHz Bio-Radar System Based on Frequency Multiplier and Phase-Locked Loop  

Myoung, Seong-Sik (Department of Electrical and Electronic Engineering, Yonsei University)
An, Yong-Jun (Department of Electrical and Electronic Engineering, Yonsei University)
Moon, Jun-Ho (PhiITech Inc.)
Jang, Byung-Jun (Department of Electronics Engineering, Kookmin University)
Yook, Jong-Gwan (Department of Electrical and Electronic Engineering, Yonsei University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.2, 2010 , pp. 208-217 More about this Journal
Abstract
This paper presents a novel 10 GHz bio-radar system based on a frequency multiplier and phase-locked loop(PLL) for non-contact measurement of heartbeat and respiration rates. In this paper, a 2.5 GHz voltage controlled oscillator (VCO) with PLL is employed to as a frequency synthesizer, and 10 GHz continuous wave(CW) signal is generated by using frequency multiplier from 2.5 GHz signal. This paper also presents the noise characteristic of the proposed system. As a result, a better performance and economical frequency synthesizer can be achieved with the proposed bio-radar system. The experimental results shows excellent bio-signal measurement up to 100 cm without any additional digital signal processing(DSP), and the proposed system is validated.
Keywords
Bio-RADAR; Super Heterodyne; Phase-Locked Loop; Multiplier; 10 GHz;
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