A novel cross-shape DGS applied to design ultra-wide stopband low-pass filters

Han Jan Chen, Tsung Hui Huang, Chin Sheng Chang, Lih Shan Chen, Na Fu Wang, Yeong Her Wang, Mau Phon Houng

Research output: Contribution to journalArticlepeer-review

106 Citations (Scopus)


This letter presents a novel low-pass filter with an ultra-wide stopband. The proposed filter is comprised of a new cross-shape defected ground structure (CSDGS). By using this structure, the filter not only supports conventional DGS performances with a sharp rejection, but also exhibits an ultra-wide stopband. For the deigned low-pass filter, an insertion loss of less than 2 dB from dc to 3.5 GHz and the rejection is better than 20 dB from 4.3 to 15.8 GHz. Predicted performances show widened and deepened stopband beyond the low passband. Furthermore, it is confirmed by measurement.

Original languageEnglish
Pages (from-to)252-254
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number5
Publication statusPublished - 2006 May 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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