Journal of the Optical Society of Korea

  • 제16권3호
  • /
  • Pages.288-291
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  • 2012
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  • 1226-4776(pISSN)
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  • 2093-6885(eISSN)
한국광학회 (Optical Society of Korea)
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Design of Ultra-wide Band-pass Filter Based on Metamaterials Applicable to Microwave Photonics

  • Lee, Chongmin (School of Electronic Engineering, College of Information Technology, Soongsil University) ;
  • Shim, Wooseok (School of Electronic Engineering, College of Information Technology, Soongsil University) ;
  • Moon, Yong (School of Electronic Engineering, College of Information Technology, Soongsil University) ;
  • Seo, Chulhun (School of Electronic Engineering, College of Information Technology, Soongsil University)
  • 투고 : 2012.05.03
  • 심사 : 2012.06.18
  • 발행 : 2012.09.25
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초록

We designed an ultra-wide band-pass filter applicable to microwave reflectometry for KSTAR (Korea Superconducting Tokamak Advanced Research) and to microwave photonics. The proposed ultra-wide band-pass filter exhibits a metamaterial structure characterized by a wide band, low insertion loss, and high skirt selectivity. The proposed filter is applied to enhance the linearity of reflectometry at the output of a VCO (voltage controlled oscillator). The pass-band of the proposed filter is observed at 18~28 GHz, and the out-of-band rejection is below 20 dB. Further, we constructed an unwrapped negative phase of S(2, 1) to verify the characteristics of the metamaterial. The under- and upper-band at lower limits of the pass-band are left- and right-handed, respectively. The group delay of the filter is less than 0.5 ns.

키워드

참고문헌

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피인용 문헌

  1. Near-infrared Subwavelength Imaging and Focusing Analysis of a Square Lattice Photonic Crystal Made from Partitioned Cylinders vol.17, pp.3, 2013, https://doi.org/10.3807/JOSK.2013.17.3.262
  2. Dual-band Frequency Selective Surface Bandpass Filters in Terahertz Band vol.19, pp.6, 2015, https://doi.org/10.3807/JOSK.2015.19.6.673
  3. Broadband and Polarization Independent Terahertz Metamaterial Filters Using Metal-Dielectric-Metal Complementary Ring Structure vol.20, pp.2, 2016, https://doi.org/10.3807/JOSK.2016.20.2.263
  4. Ultrathin Metamaterial for Polarization Independent Perfect Absorption and Band-pass Filter vol.19, pp.6, 2015, https://doi.org/10.3807/JOSK.2015.19.6.665