Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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A Terahertz Yagi-Uda Antenna with High Input Impedance

높은 입력 임피던스를 가지는 테라헤르츠 Yagi-Uda 안테나

  • Han, Kyung-Ho (School of Electrical and Computer Engineering, Ajou University) ;
  • Nguyen, Troung Khang (School of Electrical and Computer Engineering, Ajou University) ;
  • Park, Ik-Mo (School of Electrical and Computer Engineering, Ajou University) ;
  • Han, Hae-Wook (Department of Electrical and Computer Engineering, Pohang University of Science and Technology)
  • 한경호 (아주대학교 전자공학부) ;
  • ;
  • 박익모 (아주대학교 전자공학부) ;
  • 한해욱 (포항공과대학교 전자컴퓨터공학과)
  • Published : 2009.04.25
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Abstract

In this paper, a THz Yagi-Uda antenna with high input impedance is designed. By placing the antenna on a thin substrate, end-fire radiation patterns with high antenna impedance can be obtained even when the substrate has high relative dielectric constant. The proposed Yagi-Uda antenna has high input resistance of approximately $4,400{\Omega}$ at the resonance frequency which is obtained by using a U-shaped dipole as a driver element. It is expected that the Yagi-Uda antenna on a thin substrate can achieve much higher terahertz output power than the conventional THz antennas.

본 논문에서는 높은 입력 임피던스를 가지는 테라헤르츠 Yagi-Uda 안테나를 제안하였다. 제안된 Yagi-Uda 안테나는 두께가 얇은 기판 위에 설계하여 기판의 비유전율에 의한 안테나의 임피던스 저하를 줄이고 Yagi-Uda 안테나 고유의 복사패턴을 가지도록 하였다. 전 파장 길이를 가지는 U-형태의 다이폴을 driver로 사용하여 공진주파수에서 $4,400{\Omega}$ 정도의 높은 입력저항을 얻을 수 있었다. 따라서 제안된 Yagi-Uda 안테나는 기존의 테라헤르츠 안테나들에 비하여 증가된 테라헤르츠파 출력을 얻을 수 있다.

Keywords

References

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