Compact and low-insertion-loss dual-mode patch filter with spur-lines

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

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A compact microstrip dual-mode bandpass filter with inserted spur-lines at the edge of the patch is proposed. In order to obtain a low insertion loss, the proposed filter has no coupling gaps. Also, it has a size reduction of about 45% at the same resonant frequency as compared conventional dual-mode bandpass filters. Feed lines with offset are applied to ensure a minimal mismatch. From the measured results, the dual-mode filter has a 0.58-dB insertion loss at 1.27 GHz with 12% bandwidth.

Original languageEnglish
Pages (from-to)33-34
Number of pages2
JournalMicrowave and Optical Technology Letters
Issue number1
Publication statusPublished - 2004 Oct 5


  • Dual-mode filter
  • Patch filter
  • 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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