Circularly Polarized Beam-Steering Antenna Array With Butler Matrix Network

Author

Liu, Changrong ; Xiao, Shaoqiu ; Guo, Yong-Xin ; Tang, Ming-Chun ; Bai, Yan-Ying ; Wang, Bing-Zhong

Author_Institution

Instn. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

1278

Lastpage

1281

Abstract

A circularly polarized switched-beam patch antenna array with butler matrix is designed and experimentally demonstrated in this letter. With suitable rotation technique, circular polarized radiation can be improved for beam steering. Also, this technique enhances the axial-ratio (AR) bandwidth within its scanning angle. Measured results showed this array has an impedance and AR bandwidth over a frequency range of 5.75-6.2 GHz when the main beam of array is scanned to different directions. Good agreement is observed between simulation and measurement.

Keywords

antenna arrays; antenna radiation patterns; beam steering; microstrip antenna arrays; polarisation; axial-ratio bandwidth; beam steering; butler matrix network; circular polarized radiation; circularly polarized beam-steering antenna array; circularly polarized switched-beam patch antenna array; frequency 5.75 GHz to 6.2 GHz; rotation technique; Antenna measurements; Arrays; Bandwidth; Butler matrix; Frequency measurement; Antenna array; beam steering; butler matrix; circular polarization; rotation technique;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2176903

Filename

6085585