Dual band circular polarized patch antenna using small ferrite disks

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Abstract

A novel dual band circular polarization microstrip antenna is presented. The antenna is based on a circular patch antenna and its circular polarization is obtained by taking advantage of the interaction of antenna cavity field with magnetized ferrite disks inserted in the cavity region. The physics of this effect is based on creation of electromagnetic vortices. The scattering and radiation parameters of the antenna are investigated. The dependence of the axial ratio and the return loss of the antenna on the position of the ferrite disks underneath the patch are analyzed. It is shown that the circular polarization can be switched if the polarity of the bias magnetic field is reversed.

Original languageEnglish
Title of host publication2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008
Pages523-527
Number of pages5
DOIs
StatePublished - 1 Dec 2008
Event2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008 - Eilat, Israel
Duration: 3 Dec 20085 Dec 2008

Publication series

NameIEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings

Conference

Conference2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008
Country/TerritoryIsrael
CityEilat
Period3/12/085/12/08

Keywords

  • Circular polarization
  • Ferrite
  • Microstrip antenna

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