A New Loop Antenna for Directional UWB Links

Ning, LZ; Seng, LM; Wei, LL; Krishnan, S; Kyaw, O

A New Loop Antenna for Directional UWB Links

Ning, LZ Seng, LM Wei, LL Krishnan, S Kyaw, O

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Publication Type:: Conference
Issue Date:: 2007-03-12T22:05:46Z

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Field	Value	Language
dc.contributor.author	Ning, LZ	en_AU
dc.contributor.author	Seng, LM	en_AU
dc.contributor.author	Wei, LL	en_AU
dc.contributor.author	Krishnan, S	en_AU
dc.contributor.author	Kyaw, O	en_AU
dc.date.accessioned	2007-03-12T22:05:46Z
dc.date.accessioned	2012-12-15T02:29:42Z
dc.date.available	2007-03-12T22:05:46Z
dc.date.available	2012-12-15T02:29:42Z
dc.date.issued	2007-03-12T22:05:46Z
dc.identifier.uri	http://hdl.handle.net/10453/19657
dc.description.abstract	Loop antennas of circumference greater than a wavelength are generally known to have a good directive radiation pattern. However, for use in UWB applications, the variation of the radiation pattern with frequency must also be taken into account. Besides a good wideband radiation pattern, the impedance bandwidth of the antenna is also very important. The quality of a transmitted and received UWB pulse from the antenna will be a combination of both these factors. In this paper, we first investigate the characteristics of loop antennas with respect to both these factors. Next, we propose a new loop antenna configuration to overcome the limitations of the standard loop antenna for UWB applications. The new antenna consists of two concentric half-loops directly coupled to each other. The proposed antenna is analyzed using the Method-of-Moments (MoM). The theoretical and measured results agree with each other closely and attest to the fact that the new antenna has a far superior impedance bandwidth when compared with conventional loop antennas. Further, it is shown that the new antenna has a good gain and a useful radiation pattern for directional wireless links. The advantages of the antenna are conclusively demonstrated by successfully deploying it in a very high speed (500 Mbps) point-to-point UWB link.	en_AU
dc.format.extent	409202 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en_AU
dc.relation.replaces	http://hdl.handle.net/2100/148
dc.title	A New Loop Antenna for Directional UWB Links	en_AU
dc.type	Conference
utslib.copyright.status	open_access

Abstract:

Loop antennas of circumference greater than a wavelength are generally known to have a good directive radiation pattern. However, for use in UWB applications, the variation of the radiation pattern with frequency must also be taken into account. Besides a good wideband radiation pattern, the impedance bandwidth of the antenna is also very important. The quality of a transmitted and received UWB pulse from the antenna will be a combination of both these factors. In this paper, we first investigate the characteristics of loop antennas with respect to both these factors. Next, we propose a new loop antenna configuration to overcome the limitations of the standard loop antenna for UWB applications. The new antenna consists of two concentric half-loops directly coupled to each other. The proposed antenna is analyzed using the Method-of-Moments (MoM). The theoretical and measured results agree with each other closely and attest to the fact that the new antenna has a far superior impedance bandwidth when compared with conventional loop antennas. Further, it is shown that the new antenna has a good gain and a useful radiation pattern for directional wireless links. The advantages of the antenna are conclusively demonstrated by successfully deploying it in a very high speed (500 Mbps) point-to-point UWB link.

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http://hdl.handle.net/10453/19657