Single-Feed Circularly Polarized Aperture-Coupled Stack Antenna With Dual-Mode Square Loop Radiator

Author

Liu, Ji-Chyun ; Zeng, Bing-Hao ; Badjie, Lallah ; Drammeh, Salimatou ; Bor, Sheau-Shong ; Hung, Tian-Fu ; Chang, Dau-Chyrh

Author_Institution

Electr. Eng. Dept., Ching Yun Univ., Chungli, Taiwan

Volume

9

fYear

2010

fDate

7/2/1905 12:00:00 AM

Firstpage

887

Lastpage

890

Abstract

The authors propose a compact single-feed stack antenna consisting of a square loop radiator with perturbation, an aperture-coupled structure, and a straight-strip feed line for circular polarization (CP) and unidirectional radiation applications. This perturbation applies both dual-mode and orthogonal-mode effects simultaneously in the square loop resonator to present bandwidth and CP characteristics. The stack antenna presents the desired axial ratio (AR) bands of 2.42 GHz with 3-dB bandwidth (BW) = 62 MHz (2.5%). The circular polarization is demonstrated with AR spectrum and orthogonal modes distributions. The proposed antenna is successfully simulated and measured with frequency responses, radiation patterns, and current distributions.

Keywords

antenna radiation patterns; aperture-coupled antennas; current distribution; polarisation; aperture coupled structure; bandwidth 62 MHz; compact single feed stack antenna; current distribution; frequency 2.42 GHz; frequency response; orthogonal modes distribution; radiation pattern; square loop radiator; square loop resonator; straight strip feed line; Antenna measurements; Antenna radiation patterns; Aperture antennas; Bandwidth; Frequency measurement; Microstrip antennas; Circular polarization (CP); dual mode; orthogonal mode; stack antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2010.2072980

Filename

5560717