Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The Performance of Ultra-Wideband Filter with regard to dielectric materials

유전체 특성에 따른 UWB용 필터 특성에 관한 연구

  • Yoo, Chan-Sei (Electronic Materials & Packaging Research Center, Korea Electronics Technology Institute(KETI)) ;
  • Lee, Joon-Keun (Electronic Materials & Packaging Research Center, Korea Electronics Technology Institute(KETI)) ;
  • Jung, Hyun-Chul (Electronic Materials & Packaging Research Center, Korea Electronics Technology Institute(KETI)) ;
  • Yoo, Myong-Jae (Electronic Materials & Packaging Research Center, Korea Electronics Technology Institute(KETI)) ;
  • Lee, Woo-Sung (Electronic Materials & Packaging Research Center, Korea Electronics Technology Institute(KETI)) ;
  • Kang, Nam-Kee (Electronic Materials & Packaging Research Center, Korea Electronics Technology Institute(KETI))
  • 유찬세 (전자부품연구원 전자소재패키징센터) ;
  • 이중근 (전자부품연구원 전자소재패키징센터) ;
  • 정현철 (전자부품연구원 전자소재패키징센터) ;
  • 유명재 (전자부품연구원 전자소재패키징센터) ;
  • 이우성 (전자부품연구원 전자소재패키징센터) ;
  • 강남기 (전자부품연구원 전자소재패키징센터)
  • Published : 2006.06.22
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Abstract

In this paper, we propose an ultra wideband pass filter of ring type with embedded stripline stub. The fractional bandwidth was 98 % at the center frequency of 8 GHz and insertion loss was below 1 dB in passband. Two kinds of dielectric materials with the permittivity of 7.8 and 40, respectively were adopted in evaluating the suggested filter structure. As the permittivity of material became larger, the size of filter smaller as expected without any sacrifice in filter performance. In summary, the suggested filter structure has smaller size due to the embedded stripline stub and can be minimized by adopting dielectric material with higher permittivity again.

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