Vivaldi With Tunable Narrow Band Rejection

MR Hamid, Peter Gardner, Peter Hall, F Ghanem

Research output: Contribution to journalArticle

7 Citations (Scopus)


A novel Vivaldi antenna is presented with tunable narrow band rejection characteristics within the overall operating bandwidth. A microstrip line resonator is incorporated within the Vivaldi antenna to give a narrow stop band action. Three varactors are loaded into the resonator and are used for tuning. The stop band can be activated in the frequency range between 2 and 7 GHz to give a very wide tuning ratio of 3.5:1. Good agreements between simulated and measured results are observed, which verify the design concepts. (C) 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1125-1128, 2011; View this article online at DOI 10.1002/mop.25924
Original languageEnglish
Pages (from-to)1125-1128
Number of pages4
JournalMicrowave and Optical Technology Letters
Issue number5
Publication statusPublished - 1 May 2011


  • wideband antenna
  • Vivaldi antenna
  • cognitive radio
  • tunable
  • band rejection


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