Compact balanced UWB bandpass filter with one narrow notched band

Feng Wei*, Y. Jay Guo, Xiao Wei Shi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A compact balanced ultra-wideband bandpass filter (BPF) with one sharply notched band is presented in this article. The proposed BPF based on microstrip-to-slotline transition obtains favorable uniform differential-mode response and good common-mode suppression. Moreover, one narrow notched band with a 3 dB bandwidth of 6.8% is realized by introducing one coupled half-wavelength resonator. The fabricated filter has a more than 25% size reduction compared to the designs reported in open literature. The predicted results are compared with measured ones and good agreement is achieved.

Original languageEnglish
Pages (from-to)1626-1629
Number of pages4
JournalMicrowave and Optical Technology Letters
Issue number7
Publication statusPublished - Jul 2014
Externally publishedYes


  • balanced
  • band-pass filter
  • common mode
  • differential mode
  • ultra-wideband


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