A novel microstrip parallel-coupled line structure for ultrawideband microwave filters

Hussein Shaman*, Jia-Sheng Hong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A novel configuration of microstrip three parallel-coupled line structure is proposed in this letter. This new structure consists of only one section of three parallel-coupled lines to design a compact ultrawideband (UWB) bandpass filter to obtain the Federal Communications Commission's spectrum mask. To create transmission zeros around the desired UWB passband, the middle line of the three coupled lines is extended and shortened to ground at one end. As a result, this filter significantly improves the selectivity of both edges of the UWB passband and the out-of-band characteristics. For verification, the proposed filter is designed, simulated, and fabricated where excellent agreement is obtained.

Original languageEnglish
Pages (from-to)2510-2513
Number of pages4
JournalMicrowave and Optical Technology Letters
Issue number11
Publication statusPublished - Nov 2012


  • bandpass filters
  • microwstrip filter
  • parallel-coupled line filters
  • three coupled lines
  • UWB filter

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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