Enhanced bandwidth of low-profile sleeve monopole antenna for indoor base station application

Author

Zuo, S.L. ; Yin, Ying Zeng ; Zhang, Zhenhua Yu ; Song, Kaijun

Author_Institution

Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´an, China

Volume

46

Issue

24

fYear

2010

Firstpage

1587

Lastpage

1588

Abstract

The design and enhanced bandwidth performance of a monopole antenna with a simple sleeve structure for indoor base station application is presented. Besides a top-loading circular patch shorted to the ground plane through four shorting probes for a low profile, the circular sleeve structure to effectively improve the matching condition of the upper operating frequency edge can be used for bandwidth enhancement. An enhanced impedance bandwidth of about 112% ranging from 750 to 2660 MHz (VSWR ≤ 2) is achieved, and a monopole-like conical radiation pattern is also produced. With this low profile and the widened bandwidth characteristic, it is very suitable for indoor base station applications such as GSM900, DCS1800, PCS 1900, UMTS, IMT2000, Wibro, WiMAX2350, and WLAN (IEEE802.11b).

Keywords

antenna radiation patterns; indoor radio; microstrip antennas; monopole antennas; circular patch; conical radiation pattern; frequency 750 MHz to 2660 MHz; impedance bandwidth; indoor base station; monopole antenna; sleeve structure;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2010.2708

Filename

5659655