Reconfigurable CP cavity back with ability to change polarisation diversity

Karamzadeh S., RAFII V., Saygin H., Kartal M.

ELECTRONICS LETTERS, vol.51, no.25, pp.2080-2081, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 51 Issue: 25
  • Publication Date: 2015
  • Doi Number: 10.1049/el.2015.3349
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2080-2081
  • Istanbul Technical University Affiliated: Yes


A novel configuration of a circularly polarised (CP) reconfigurable aperture antenna is presented. In a number of recent studies, some new and promising designs for circularly polarised cavity-backed antennas with a parasitic patch have been proposed to obtain circular polarisation and unidirectional radiation properties. However, these designs still have the disadvantage of producing single polarisation. To overcome this disadvantage, a reconfigurable antenna using pin diodes is proposed. By combining the reconfigurable aperture antenna with a parasitic patch and a low profile cylindrical cavity and optimising the antenna parameters, a high gain antenna with significantly improved impedance and axial ratio bandwidths can be achieved.