• DocumentCode
    1036342
  • Title

    Dual-frequency stacked annular-ring microstrip antenna

  • Author

    Dahele, Jashwant S. ; Lee, Kai-Fong ; Wong, D.P.

  • Author_Institution
    Royal Military College of Science, Shrivenham, Swindon, UK
  • Volume
    35
  • Issue
    11
  • fYear
    1987
  • fDate
    11/1/1987 12:00:00 AM
  • Firstpage
    1281
  • Lastpage
    1285
  • Abstract
    Experimental results of a dual-frequency microstrip antenna consisting of two stacked annular rings of outer radii 5 cm and inner radii 2.5 cm are presented. Fabricated on a Duroid substrate with relative permittivity 2.32 and thickness 0.159 cm, the separations of the two resonant frequencies range from 6.30-9.36 percent for the first three modes. The frequency separations can be altered by means of an adjustable air gap between the lower ring and the upper substrate.
  • Keywords
    Microstrip antennas; Multifrequency antennas; Antenna measurements; Apertures; Coaxial components; Impedance; Microstrip antennas; Patch antennas; Permittivity; Probes; Resonant frequency; Shape;
  • fLanguage
    English
  • Journal_Title
    Antennas and Propagation, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-926X
  • Type

    jour

  • DOI
    10.1109/TAP.1987.1143997
  • Filename
    1143997
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1036342