A novel 10 GHz super-heterodyne bio-radar system based on a frequency multiplier and phase-locked loop

Seong Sik Myoung, Y. J. An, J. G. Yook, B. J. Jang, J. H. Moon

Research output: Contribution to journalArticle

6 Citations (Scopus)

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 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 characteristics of the proposed system, and the analysis result shows that the same signal-to-noise-ratio (SNR) performance can be achieved with the proposed system based on the frequency multiplier compared with the conventional system with identical carrier frequency. The experimental results shows excellent vital-signal measurement up to 100 cm without any additional digital signal processing (DSP), thus proving the validity of the proposed system.

Original languageEnglish
Pages (from-to)149-162
Number of pages14
JournalProgress In Electromagnetics Research C
Volume19
DOIs
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

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