A Planar UWB Antenna With a Broadband Feeding Structure

Author

Toh, Wee Kian ; Chen, Zhi Ning ; Qing, Xianming

Author_Institution

RF & Opt. Dept., Inst. for Infocomm Res., Singapore, Singapore

Volume

57

Issue

7

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

2172

Lastpage

2175

Abstract

A planar antenna with a broadband feeding structure is presented and analyzed for ultrawideband applications. The proposed antenna consists of a suspended radiator fed by an n-shape microstrip feed. Study shows that this antenna achieves an impedance bandwidth from 3.1-5.1 GHz (48%) for a reflection of coefficient of iotaS₁₁iota < -10 dB, and an average gain of 7.7 dBi. Stable boresight radiation patterns are achieved across the entire operating frequency band, by suppressing the high order mode resonances. This design exhibits good mechanical tolerance and manufacturability.

Keywords

antenna feeds; antenna radiation patterns; microstrip antennas; microwave antennas; planar antennas; ultra wideband antennas; bandwidth 3.1 GHz to 5.1 GHz; boresight radiation patterns; broadband feeding structure; n-shape microstrip feed; planar UWB antenna; suspended radiator fed; Antenna feeds; Bandwidth; Broadband antennas; Impedance; Microstrip antennas; Planar arrays; Reflection; Reflector antennas; Ultra wideband antennas; Ultra wideband technology; Broadband antennas; microstrip patch antennas; suspended plate antennas; ultrawideband (UWB) antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2009.2021968

Filename

4907128