Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1988.07a
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- Pages.297-300
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- 1988
A Study on the Pulsed Doppler System using Quadrature-Sampling Method in R.F. Range
RF (Radio Frequency) 영역에서의 Quadrature sampling을 이용한 펄스 도플러 장치의 개발에 관한 연구
- Kim, Jae-Kyoung (Dept. of Eletronics, Ajou University) ;
- Jeong, Taek-Seob (Dept. of Eletronics, Ajou University) ;
- Kim, Young-Kil (Dept. of Eletronics, Ajou University)
- Published : 1988.07.01
Abstract
The ultrasound Doppler effect is used for measuring the velocity of the bloodflow in an artry. Because of the range information, the pulsed doppler system is most commonly used. In this paper, we propose a new pulsed doppler system which uses a quadrature sampling method in R.F. range in order to detect the bloodflow direction and to simplify the compexity of hardware. The pulsed doppler system using quadrature sampling method in R.F. range eliminates In-phase, Quadrature phase channel balancing problem at demodulator. In addition, the improved pulsed Doppler system shows the possibility of serial processing.
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