Wideband bandstop filter with cross-coupling

Hussein Shaman, Jia Sheng Hong

Research output: Contribution to journalArticlepeer-review

87 Citations (Scopus)


A general circuit configuration for cross-coupled wideband bandstop filters is proposed. The distinct filtering characteristics of this new type of transmission line filter are investigated theoretically and experimentally. It is shown that a ripple stopband can be created, leading to a quasi-elliptic function response that enhances the rejection bandwidth. A demonstrator with approximately 80% fractional bandwidth at a mid-stopband frequency of 4 GHz is developed and presented. The proposed filter is successfully realized in theory and verified by full-wave electromagnetic simulation and the experiment. Theoretical, simulated, and measured results are in excellent agreement. © 2007 IEEE.

Original languageEnglish
Pages (from-to)1780-1785
Number of pages6
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number8
Publication statusPublished - Aug 2007


  • Microstrip filters
  • Transmission line filters
  • Wide-band bandstop filters


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