Internal triple-band folded planar antenna design for third generation mobile handsets

Author

See, C.H. ; Abd-Alhameed, R.A. ; Excell, P.S. ; McEwan, Neil J. ; Gardiner, J.G.

Author_Institution

Mobile & Satellite Commun. Res. Centre, Bradford Univ., Bradford

Volume

2

Issue

7

fYear

2008

fDate

10/1/2008 12:00:00 AM

Firstpage

718

Lastpage

724

Abstract

A novel internal triple-band folded planar antenna for mobile handsets is introduced, formed by modifying the geometry of a rectangular patch antenna to include a shorting pin, folded sides, a shorted microstrip stub and a notch. The size of the antenna is successfully reduced to a volume of 34 times 34 times 7 times mm³. The antenna is mounted on a finite ground plane of 50times100 times mm². The impedance bandwidth achieved was 29.7% (equivalent to return loss%%10%dB); this covers the DCS1800, PCS1900 and UMTS 2000 bands. The characteristics of the proposed antenna, including impedance bandwidth and far field radiation patterns are discussed theoretically and experimentally; the simulated and measured results show good agreement. The tuning effects of the geometry parameters on impedance matching of the proposed antenna are also investigated.

Keywords

antenna radiation patterns; microstrip antennas; mobile radio; planar antennas; geometry parameters tuning effects; impedance matching; internal triple-band folded planar antenna design; microstrip stub; radiation patterns; rectangular patch antenna; third generation mobile handsets;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map:20070356

Filename

4649012