The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Design and Fabrication of A Doppler Radar for Motion Detector Using Frequency Tunable Hairpin Resonator

주파수 가변형 헤어핀공진기를 이용한 동작감지용 도플러 레이더센서의 제작 및 설계

  • Kim, Eun-Su ;
  • Kim, Gue-Chol (Department of Marine Electronic, Communication and Computer Engineering, Mokpo Maritime University)
  • 김은수 (목포해양대학교 해양전자통신컴퓨터공학과) ;
  • 김규철 (목포해양대학교 해양전자통신컴퓨터공학과)
  • Received : 2018.09.03
  • Accepted : 2018.10.15
  • Published : 2018.10.31
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Abstract

We designed an x-band radar for motion detector using a frequency tunable hairpin ring resonator. The proposed doppler radar sensor can vary the oscillation frequency by applying a hairpin resonator using a varactor diode to the oscillator, and this can also reduce the size by transmitting and receiving a signal from Tx/Rx dual antenna. The fabricated doppler radar sensor was fabricated in $30{\times}24mm$, and it was confirmed that the pulse width difference occurred according to the distance from the object. The measurement results showed oscillation at 10.525GHz. We confirmed that it is enough to use as radar for motion detection from the measured results.

주파수 가변형 헤어핀공진기를 이용하여 동작감지용 x-band 레이더를 설계하였다. 제안한 도플러 레이더센서는 바렉터 다이오드를 이용한 헤어핀 공진기를 발진기에 적용하여 발진주파수를 가변할 수 있으며 송수신 겸용 안테나를 이용해서 하나의 안테나로 신호를 송신하고 수신함으로써 사이즈도 줄일 수 있다. 제작된 도플러 레이더센서는 $30{\times}24mm$로 제작되었고, 측정결과 10.52GHz에서 발진하였으며, 물체의 속도에 따라 펄스폭의 차이가 발생하는 것을 확인하였다. 측정된 결과를 이용하여 동작감지용 레이더로 충분히 활용 가능함을 확인하였다.

Keywords

References

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