Compact ultra-wideband bandpass filter using uniplanar compact photonic bandgap structure

J. W. Baik, D. H. Hyun, J. Jeong, Y. S. Kim

Research output: Contribution to journalArticlepeer-review


A novel ultra-wideband (UWB) bandpass filter in the whole UWB passband of 3.1-10.6 GHz is proposed and implemented using a uniplanar compact photonic bandgap (UC-PBG) resonator for size reduction. Since the UC-PBG structure has more distributed L-C components than the conventional microstip multiple-mode resonator (MMR), the size reduction is achieved, which is about 34% more than the UWB bandpass filter based on a conventional microstrip MMR. The proposed one-stage UC-PBG filter has four transmission poles, insertion loss < 1.2 dB and group delay variation < 0.14 ns, while the threestage one shows an insertion loss of < 2.2 dB and a group delay variation of < 0.4 ns in the whole UWB band.

Original languageEnglish
Pages (from-to)2122-2123
Number of pages2
JournalMicrowave and Optical Technology Letters
Issue number9
Publication statusPublished - 2007 Sept


  • Bandpass filter
  • Microstrip filter
  • Photonic Bandgap structure
  • Ultra-wideband

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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