A Planar UWB Diversity Antenna

Author

Toh, Wee Kian ; Chen, Zhi Ning ; Qing, Xianming ; See, Terence Shie Ping

Author_Institution

Inst. for Infocomm Res., Singapore, Singapore

Volume

57

Issue

11

fYear

2009

Firstpage

3467

Lastpage

3473

Abstract

A planar dual-port diversity antenna, operating with broadside and/or conical radiation patterns in H-planes, is presented for ultrawideband (UWB) applications. The proposed antenna consists of a suspended square patch with a thick stem underneath. A broadband differential feeding strip is used to feed the square patch. The measured gain for the broadside mode is 8.4-10.3 dBi from 3.1 GHz to 5.2 GHz (50.6%), and the conical mode 3.2-5.1 dBi from 3.1 GHz to 4.9 GHz (45%). The measured reflection coefficients (|S ₁₁|, |S ₂₂|) are less than -10 dB over the frequency ranges and the isolation |₂₁| between the two ports is greater than 13.5 dB. The operation of the differential feeding strip on the antenna is discussed. Both pattern diversity and partial polarization diversity are achieved for this antenna.

Keywords

antenna feeds; antenna radiation patterns; diversity reception; electromagnetic wave polarisation; microstrip antennas; planar antennas; ultra wideband antennas; H-plane; broadband differential feeding strip; broadside radiation pattern diversity; conical radiation pattern; frequency 3.1 GHz to 5.2 GHz; partial polarization diversity; planar UWB diversity antenna; planar dual-port diversity antenna; suspended square patch; ultrawideband antenna; Antenna feeds; Antenna measurements; Antenna radiation patterns; Diversity methods; Frequency measurement; Gain measurement; Polarization; Reflection; Ultra wideband antennas; Ultra wideband technology; Broadband antennas; configurable antennas; diversity antennas; microstrip 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.2009.2024131

Filename

5061596