Dual-Polarization Slot Antenna With High Cross-Polarization Discrimination for Indoor Small-Cell MIMO Systems

Author

TaeckKeun Oh ; Yeon-Geun Lim ; Chan-Byoung Chae ; Yongshik Lee

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

14

fYear

2015

fDate

2015

Firstpage

374

Lastpage

377

Abstract

We demonstrate a dual-polarization slot antenna for indoor small-cell multiple-input-multiple-output (MIMO) systems. The symmetric structure and differential feeding promotes destructive interference of cross-polarized radiation in the far field to achieve high cross-polarization discrimination (XPD) in all directions. In addition, a very similar radiation pattern is observed not only between the major planes of each polarization but also between the two polarization orientations. Therefore, the proposed antenna can be considered as a stronger candidate for indoor small-cell MIMO systems. With an average XPD of 26.4 dB in all directions, the 3-D ray-tracing simulation results show a more than 22% increase in the system throughput compared to previous dual-polarization antennas for a single-user MIMO system in a typical indoor environment.

Keywords

MIMO communication; antenna radiation patterns; cellular radio; polarisation; ray tracing; slot antennas; 3D ray-tracing simulation; XPD; antenna radiation pattern; cross-polarized radiation interference; differential feeding; dual-polarization slot antenna; high cross-polarization discrimination; indoor small-cell MIMO systems; polarization orientations; single-user multiple-input-multiple-output systems; symmetric structure; Antenna measurements; Antenna radiation patterns; MIMO; Mobile antennas; Ports (Computers); Throughput; Cross-polarization discrimination (XPD); dual-polarization; multiple-inpu–multiple-output (MIMO); polarization isolation; ray tracing; slot antenna; small cell;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2364517

Filename

6933871