Dual-Band Circularly Polarized Antennas Using Stacked Patches With Asymmetric U-Slots

Author

Nayeri, Payam ; Lee, Kai-Fong ; Elsherbeni, Atef Z. ; Yang, Fan

Author_Institution

Electr. Eng. Dept., Univ. of Mississippi, Oxford, MS, USA

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

492

Lastpage

495

Abstract

In this letter, a new design for single-feed dual-band circularly polarized microstrip antennas is presented. A stacked- patch configuration is used for the antenna, and circular polarization is achieved by designing asymmetrical U-slots on the patches. The dimensions of the U-slots are optimized to achieve circular polarization in both bands. A prototype has been designed to operate at two frequencies with a ratio of 1.66. Both experimental and theoretical results are presented and discussed. The circularly polarized bandwidth of the antenna is 1.0% at 3.5 GHz (WiMax) and 3.1% at 5.8 GHz (HiperLAN).

Keywords

antenna feeds; electromagnetic wave polarisation; microstrip antennas; multifrequency antennas; slot antennas; HiperLAN; WiMax; asymmetric U-slots; circular polarization; circularly polarized bandwidth; dual-band circularly polarized antennas; frequency 3.5 GHz; single-feed dual-band circularly polarized microstrip antennas; stacked-patch configuration; Antenna measurements; Bandwidth; Dual band; Microstrip; Microstrip antennas; Circular polarization; U-slot; dual-band; stacked patch;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2153820

Filename

5765652