Printed triple-band circularly polarised antenna for wireless systems

Author

Bao, X.L. ; Ammann, M.J.

Author_Institution

Antenna & High Freq. Res. Centre, Dublin Inst. of Technol., Dublin, Ireland

Volume

50

Issue

23

fYear

2014

fDate

11 6 2014

Firstpage

1664

Lastpage

1665

Abstract

A triple-band circularly polarised microstrip patch antenna operating in the 2.4, 3.5 and 5.7 GHz bands is presented. The antenna consists of two substrate layers with an electromagnetically coupled low-band patch in the middle layer and a probe-fed dual-band patch on the top layer. The impedance bandwidths (voltage standing wave ratio (VSWR) <; 2.5) for the three frequency bands are 112, 118 and 427 MHz with 3 dB axial-ratio bandwidths of 15, 44 and 36 MHz, respectively. The peak gains across the operating bands are 4.2, 5.5 and 4 dBic, respectively.

Keywords

UHF antennas; microstrip antennas; microwave antennas; multifrequency antennas; radio networks; VSWR; bandwidth 15 MHz; bandwidth 36 MHz; bandwidth 44 MHz; electromagnetically coupled low-band patch; frequency 112 MHz; frequency 118 MHz; frequency 2.4 GHz; frequency 3.5 GHz; frequency 427 MHz; frequency 5.7 GHz; impedance bandwidths; printed triple-band circularly polarised antenna; probe-fed dual-band patch; substrate layers; triple-band circularly polarised microstrip patch antenna; voltage standing wave ratio; wireless systems;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2014.3103

Filename

6955032