Parallel-coupled microstrip bandpass filters with a wide stopband using spur lines

Y. Sung, C. S. Ahn, Y. S. Kim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In this paper, we propose a novel parallel-coupled microstrip bandpass filter with a wide stopband. The proposed bandpass filter with spur lines provides a deep and wide stopband because spur lines can provide deep stopband characteristics in some frequency bands. Also, the experimental results show that the transmission coeffi cients of the proposed filter are lower than -50 dB around the 2nd- and 3rd-harmonic frequencies. This operation can be obtained without increasing its size while the other features are not degraded.

Original languageEnglish
Pages (from-to)9-11
Number of pages3
JournalMicrowave and Optical Technology Letters
Issue number1
Publication statusPublished - 2004 Oct 5


  • Bandpass filters
  • Microstrip filters
  • Spur lines

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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