A miniaturized circularly polarized microstrip antenna with bandwidth enhancement


Conference Paper

© 2016 IEEE. A miniaturized single-feed cross-aperture coupled right-handed circularly polarized (RHCP) microstrip antenna with bandwidth enhancement has been presented. The antenna size miniaturization is achieved by the capacitive loading offered by the shorting strips and radiating patch, and the inductive loading induced by the shorting pins. A 0°-90° microstrip hybrid consisting of a cascade of a Wilkinson 3-dB power divider and a 90° phase shifter is designed to feed the antenna to significantly improve its bandwidth. The overall size of the antenna is 50 mm × 50 mm × 6.2 mm (0.33λ0 × 0.33λ0 × 0.04λ0), exhibiting a global bandwidth of 12% ranging from 1.88 to 2.12 GHz, where the return loss is larger than 10 dB, the broadside axial ratio (AR) is smaller than 3 dB, and the gain is above 0 dBic.

Full Text

Duke Authors

Cited Authors

  • Li, J; Zhang, A; Joines, WT; Liu, QH

Published Date

  • October 25, 2016

Published In

  • 2016 Ieee Antennas and Propagation Society International Symposium, Apsursi 2016 Proceedings

Start / End Page

  • 41 - 42

International Standard Book Number 13 (ISBN-13)

  • 9781509028863

Digital Object Identifier (DOI)

  • 10.1109/APS.2016.7695729

Citation Source

  • Scopus