A novel wide beamwidth and circularly polarized microstrip antenna loading annular dielectric superstrate with metal ring

Author

Tianshuang Tan ; Yulong Xia ; Qi Zhu

Author_Institution

Dept. of EEIS, Univ. of Sci. & Technol. of China, Hefei, China

fYear

2014

fDate

6-11 July 2014

Firstpage

1883

Lastpage

1884

Abstract

The design of a circularly polarized (CP) microstrip antenna with wide beamwidth working at 1.268GHz is proposed. The wide beamwidth is achieved by introducing a substrate larger than the ground and an annular dielectric superstrate with a metal ring. The effects of the substrate, superstrate and ring on radiation pattern and circular polarization are discussed. Simulation results show the proposed antenna simultaneously has wide beamwidth, high low-elevation gain, symmetrical pattern and good CP characteristics. The minimum axial ratio is 0.34dB. 3dB beamwidth and 3dB axial-ratio beamwidth are 169.12° and 165° respectively.

Keywords

antenna radiation patterns; dielectric materials; microstrip antennas; CP characteristics; CP microstrip antenna; annular dielectric superstrate; axial-ratio beamwidth; circular polarization; circularly polarized microstrip antenna; frequency 1.268 GHz; metal ring; radiation pattern; symmetrical pattern; wide beamwidth; Antenna radiation patterns; Dielectrics; Metals; Microstrip; Microstrip antennas; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE

Conference_Location

Memphis, TN

ISSN

1522-3965

Print_ISBN

978-1-4799-3538-3

Type

conf

DOI

10.1109/APS.2014.6905268

Filename

6905268