Performance enhancement of a wideband spiral antenna using a stepped ground plane

Sarah Mohamad*, Robert Cahill, Vincent Fusco

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
1113 Downloads (Pure)


This study presents the use of a stepped ground plane as a means to increase the gain and front-to-back ratio of an Archimedean spiral which operates in the frequency range 3–10 GHz. The backing structure is designed to optimize the antenna performance in discrete 1 GHz bands by placing each of the eight metal steps one quarter wavelength below the corresponding active regions of the spiral. Simulated and experimental results show that this type of ground plane can be designed to enhance the antenna performance over the entire 105% operating bandwidth of the spiral.
Original languageEnglish
Pages (from-to)753-757
Number of pages5
JournalMicrowave and Optical Technology Letters
Issue number3
Early online date28 Jan 2014
Publication statusPublished - Mar 2014



ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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