A Dual-Polarization Slot Antenna Using a Compact CPW Feeding Structure

Author

Li, Yue ; Zhang, Zhijun ; Chen, Wenhua ; Feng, Zhenghe ; Iskander, Magdy F.

Author_Institution

State Key Lab. of Microwave & Commun., Tsinghua Univ., Beijing, China

Volume

9

fYear

2010

fDate

7/2/1905 12:00:00 AM

Firstpage

191

Lastpage

194

Abstract

A dual-polarization coplanar waveguide (CPW)-fed slot antenna is proposed in this letter. By exploiting the even and odd modes of a CPW structure, two orthogonal polarizations can be excited in a slot aperture by the same feeding CPW, which results in a compact dual-polarization antenna design with very good isolation between the ports. The -10-dB reflection coefficient bandwidths of two polarizations are 670 MHz (27.9%) for one polarization and 850 MHz (35.4%) for the other, and the isolation between the two ports in the WLAN band is better than -32.6 dB. The radiation pattern and efficiency of the proposed antenna are also measured, and radiation pattern data are compared with simulation results.

Keywords

antenna radiation patterns; aperture antennas; coplanar waveguides; electromagnetic wave polarisation; reflector antenna feeds; slot antennas; CPW-fed slot antenna; WLAN band; antenna efficiency; compact CPW feeding structure; compact dual-polarization antenna design; dual-polarization coplanar waveguide slot antenna; even mode; frequency 670 MHz; frequency 850 MHz; odd mode; orthogonal polarization; radiation pattern; reflection coefficient bandwidth; slot aperture; Compact; dual polarization; isolation; slot antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2010.2044865

Filename

5427125