A simple dual-band microstrip-fed printed antenna for WLAN applications

Author

Thomas, K.G. ; Sreenivasan, Mattunga

Author_Institution

SAMEER-Centre for Electromagn., Chennai

Volume

3

Issue

4

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

687

Lastpage

694

Abstract

A novel microstrip-fed dual-band printed antenna for wireless local area network (WLAN) is presented. The antenna comprises a rectangular and a circular radiating element, which generate two resonant modes to cover 2.4/5.2/5.8 GHz WLAN bands. The design was experimentally verified by constructing the antenna on a FR4 (epsiv_r = 4.4) dielectric substrate (47 mm times26 mm times0.76 mm) and measuring its impedance and radiation characteristics at both the bands. The measured 10 dB return loss (VSWR 2:1) bandwidth in the 2.4 GHz band is 550 MHz (2.1-2.65 GHz) and it covers the bandwidth required for 2.4 GHz WLAN. The 5.2/5.8 GHz resonant mode has a bandwidth of 950 MHz (5.15-6.1 GHz) covering 5.2/5.8 GHz WLAN bands. A rigorous experimental evaluation confirmed that the dual-band printed antenna maintained good radiation characteristics with minimum cross-polarisation levels.

Keywords

antenna feeds; antenna radiation patterns; microstrip antennas; multifrequency antennas; wireless LAN; WLAN application; bandwidth 550 MHz; bandwidth 950 MHz; dual-band microstrip-fed printed antenna; radiating element; resonant mode; wireless local area network;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map.2008.0077

Filename

4956843