A pattern reconfigurable null scanning antenna

Research output: Contribution to journalArticlepeer-review


The design, analysis, and measurement of a reconfigurable null scanning antenna operating at 2.4 GHz are presented. Unlike existing null reconfigurable antennas, this compact antenna scans its pattern null continuously, and maintains its impedance bandwidth without the need for feed reconfiguration. Incorporation of 12 varactors enables null reconfiguration. Full-wave simulations of the antenna, including the bias network and the lumped circuit model for the varactors, predict antenna performance. Impedance and pattern measurements verify simulated results.

Original languageEnglish (US)
Article number6236026
Pages (from-to)4538-4544
Number of pages7
JournalIEEE Transactions on Antennas and Propagation
Issue number10
StatePublished - 2012


  • Cognitive radio
  • microstrip
  • null scanning
  • pattern reconfigurable antenna

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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