Broadband low-profile antennas for wireless applications

Author

Li, R.L. ; Pan, B. ; Papapolymerou, J. ; Laskar, J. ; Tentzeris, M.M.

Author_Institution

Georgia Electron. Design Centre, Georgia Inst. of Technol., Sch. Of Electr. And Comput. Eng., GA

Volume

1

Issue

2

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

396

Lastpage

400

Abstract

Two novel broadband low-profile antennas are developed for the mobile terminals of wireless applications. The first one is a quasiplanar antenna which has a height of 0.06lambda₀, where lambda₀ is the free-space wavelength at the centre frequency. The second one is a planar antenna which has a height of 0.056lambda₀. It is demonstrated that the quasiplanar antenna can achieve a bandwidth for VSWR<2 of more than 45%, while the planar antenna realises a bandwidth of more than 40%. More importantly, over these bandwidths the broadband low-profile antennas have a quite constant omnidirectional radiation pattern with a peak gain of around 1 dBi. The antennas are designed on a commonly used RT/Duroid substrate; hence it is easy to integrate with RF front-end circuits. The antenna structures are described and the simulation and experimental results are presented

Keywords

antenna radiation patterns; broadband antennas; mobile antennas; planar antennas; RF front-end circuits; broadband low-profile antennas; free-space wavelength; mobile terminals; omnidirectional radiation pattern; quasiplanar antenna; wireless applications;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map:20050174

Filename

4167698