A broadband leaky-wave aperture antenna of circular polarization

Author

Lin, Shih-Kai ; Lin, Yi-Cheng

Author_Institution

Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2011

fDate

3-8 July 2011

Firstpage

789

Lastpage

792

Abstract

This paper presents a novel circularly polarized (CP) aperture antenna with a hybrid modes of traveling wave and resonant wave. The antenna comprises a circular aperture with fan-shaped perturbation and a straight microstrip line for the antenna feed. Containing the inherent feature in traveling wave antennas, the presented antenna performs very wideband results, including a 10-dB return loss bandwidth of 57%, a 6-dB axial ratio (AR) bandwidth of 55%, and a 3-dB gain drop bandwidth of 55% measured at broadside. The presented antenna is printed on a PCB substrate for low manufacturing cost. We built a prototype for the presented antenna. A good agreement between simulation and measurement is achieved.

Keywords

antenna feeds; broadband antennas; electromagnetic wave polarisation; microstrip lines; CP aperture antenna; PCB substrate; antenna feed; broadband leaky-wave aperture antenna; circular polarization; circularly polarized aperture antenna; fan-shaped perturbation; microstrip line; traveling wave antennas; Antenna feeds; Antenna measurements; Aperture antennas; Bandwidth; Broadband antennas; Circular polarization; aperture antenna; broadband antenna; leaky-wave antenna; planar antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on

Conference_Location

Spokane, WA

ISSN

1522-3965

Print_ISBN

978-1-4244-9562-7

Type

conf

DOI

10.1109/APS.2011.5996391

Filename

5996391