The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Wideband ENG Zeroth-Order Resonant Antenna Having Mushroom Shape

버섯 형태를 갖는 광대역 ENG 영차 공진 안테나

  • Chang, Woo-Cheol (Department of Radio Science & Electronic Engineering, Kyunghee University) ;
  • Lee, Bom-Son (Department of Radio Science & Electronic Engineering, Kyunghee University)
  • Published : 2009.09.30
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Abstract

This Letter presents a wideband ENG(Epsilon Negative) ZOR(Zeroth-Order Resonant) antenna designed on a microstrip line. It has a mushroom structure and its size is only $7.65{\times}1.31{\times}2.37\;mm$(or $0.306{\times}0.053{\times}0.095\;{\lambda}_0$ at 12 GHz) owing to zeroth-order resonance. The design procedures with closed form solutions are provided using transmission line theory considering radiation loss. The measured antenna bandwidth is about 20.0 % at 9.2 GHz and antenna gain is 7.1 dBi despite the compact size.

본 논문에서는 microstrip line에서 광대역 특성을 갖는 ENG(Epsilon Negative) ZOR(Zeroth-Order Resonant) 안테나를 설계, 제작, 측정 및 비교, 분석하였다. 제안된 안테나는 mushroom 구조를 이용하여 설계하였고, 영차 공진 단일 셀의 공진 주파수는 12 GHz이다. 안테나 크기는 $7.65{\times}1.31{\times}2.37\;mm$(or $0.306{\times}0.053{\times}0.095\;{\lambda}_0$ at 9.2 GHz)이다. 설계 방법은 방사 손실을 고려한 전송 이론 모델링을 바탕으로 설계하였다. 정합을 위한 결합 커패시터를 사용해서 안테나 공진 주파수가 9.2 GHz로 낮아졌으며, 이 주파수에서 측정된 대역폭은 1,831 MHz(20.0%)이며, 최대 이득은 7.1 dBi이다.

Keywords

References

  1. Jea-Hyun Park, Young-Ho Ryu, Jae-Gon Lee, and Jeong-Hae Lee, "Epsilon negative zeroth-order resonator antenna", IEEE Trans. Antennas and Propagation, vol. 55, no. 12, pp. 3710-3712, 2007 https://doi.org/10.1109/TAP.2007.910505
  2. Sung-joon Lim, C. Caloz, and T. Itoh, "Metamaterial- based electronically controlled transmissionline structure as a novel leaky-wave antenna with tunable radiation angle and beamwidth", IEEE Trans. Microwave Theory and Tech., vol. 53, no. 1, pp. 161-173, 2005 https://doi.org/10.1109/TMTT.2004.839927
  3. C. A. Allen, K. M. K. H. Leong, and T. Itoh, "Designof a balanced 2D composite right-/left-handed transmission line type continuous scanning leaky waveantenna", IET Antennas & Propagation, vol. 1, no. 3, pp. 746-750, 2007 https://doi.org/10.1049/iet-map:20060078
  4. Changho Choi, Bomson Lee, "Investigation of radiation effects for 1-D left-handed transmission lines", Proc. Int. Symp. on AP-S, pp. 1-4, Jul. 2008
  5. R. E. Collin, Foundation for Microwave Engineering, New York: McGraw-Hill, 1992
  6. Tack-Gyu Kim, Bomson Lee, "Metamaterial-based compact zeroth-order resonant antenna", Electron. Lett., vol. 45, no. 1, pp. 12-13, 2009 https://doi.org/10.1049/el:20092715