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Folded Loop Balanced Coplanar Antenna for WLAN Applications

Alhaddad, A. G.; Abd-Alhameed, R. A.; Zhou, D.; See, Chan H.; Excell, P. S.; Jones, S. M. R.

Authors

A. G. Alhaddad

R. A. Abd-Alhameed

D. Zhou

P. S. Excell

S. M. R. Jones



Abstract

A novel balanced rectangular loop antenna is proposed, having an ungrounded coplanar waveguide (CPW) feed configuration and a folded structure at both ends. This antenna is designed for operation over the 2.4 GHz and 5 GHz WLAN frequency bands. Bond-wire bridges are used along the CPW feed line to ensure the same potential across the CPW ground planes. The self-balancing structure that can be realized in a loop antenna offers operation without the need of a separate balun for connection to a RF source. A prototype of the optimized antenna with overall dimension of 31 mm 16 mm 3 mm was fabricated and tested. The calculated and measured results show good agreement, confirming good wideband characteristics with multiband operation. An example application of the proposed antenna is studied when used in handheld devices. The results show that this antenna has performance largely independent of perturbations of its associated ground plane, because the balanced feed created by the intrinsic balun structure minimizes ground plane currents.

Citation

Alhaddad, A. G., Abd-Alhameed, R. A., Zhou, D., See, C. H., Excell, P. S., & Jones, S. M. R. (2012). Folded Loop Balanced Coplanar Antenna for WLAN Applications. IEEE Transactions on Antennas and Propagation, 60(10), 4916-4920. https://doi.org/10.1109/tap.2012.2207322

Journal Article Type Article
Publication Date 2012-10
Deposit Date May 22, 2019
Journal IEEE Transactions on Antennas and Propagation
Print ISSN 0018-926X
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Peer Reviewed Peer Reviewed
Volume 60
Issue 10
Pages 4916-4920
DOI https://doi.org/10.1109/tap.2012.2207322
Keywords Electrical and Electronic Engineering
Public URL http://researchrepository.napier.ac.uk/Output/1820375