A pattern reconfigurable U-slot antenna and its applications in MIMO systems

Qin, PY; Guo, YJ; Weily, AR; Liang, CH

A pattern reconfigurable U-slot antenna and its applications in MIMO systems

Qin, PY

Guo, YJ

Weily, AR Liang, CH

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Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2012, 60 (2 PART 1), pp. 516 - 528
Issue Date:: 2012-02-01

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Field	Value	Language
dc.contributor.author	Qin, PY https://orcid.org/0000-0001-8861-4143	en_US
dc.contributor.author	Guo, YJ https://orcid.org/0000-0001-6008-9682	en_US
dc.contributor.author	Weily, AR	en_US
dc.contributor.author	Liang, CH	en_US
dc.date.issued	2012-02-01	en_US
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2012, 60 (2 PART 1), pp. 516 - 528	en_US
dc.identifier.issn	0018-926X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/115689
dc.description.abstract	A new compact pattern reconfigurable U-slot antenna is presented. The antenna consists of a U-slot patch and eight shorting posts. Each edge of the square patch is connected to two shorting posts via PIN diodes. By switching between the different states of the PIN diodes, the proposed antenna can operate in either monopolar patch or normal patch mode in similar frequency ranges. Therefore, its radiation pattern can be switched between conical and boresight patterns electrically. In addition, the plane with the maximum power level of the conical pattern can be changed between two orthogonal planes. Owing to a novel design of the switch geometry, the antenna does not need dc bias lines. The measured overlapping impedance bandwidth of the two modes is 6.6% with a center (S/ 11/<frequency of 5.32 GHz. The measured radiation patterns agree well with simulated results. The antennas are incorporated in a 2×2 multiple-input-multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system to demonstrate the improvement in system capacity. In the real-time MIMO-OFDM channel measurement, it is shown that compared to omnidirectional antennas, the pattern reconfigurable antennas can enhance the system capacity, with 17% improvement in a line-of-sight (LOS) scenario and 12% in a non-LOS (NLOS) scenario at a signal-to-noise ratio (SNR) of 10 dB. © 2011 IEEE.	en_US
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation	en_US
dc.relation.isbasedon	10.1109/TAP.2011.2173439	en_US
dc.subject.classification	Networking & Telecommunications	en_US
dc.title	A pattern reconfigurable U-slot antenna and its applications in MIMO systems	en_US
dc.type	Journal Article
utslib.citation.volume	2 PART 1	en_US
utslib.citation.volume	60	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	1005 Communications Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
utslib.copyright.status	open_access
pubs.issue	2 PART 1	en_US
pubs.publication-status	Published	en_US
pubs.volume	60	en_US

Abstract:

A new compact pattern reconfigurable U-slot antenna is presented. The antenna consists of a U-slot patch and eight shorting posts. Each edge of the square patch is connected to two shorting posts via PIN diodes. By switching between the different states of the PIN diodes, the proposed antenna can operate in either monopolar patch or normal patch mode in similar frequency ranges. Therefore, its radiation pattern can be switched between conical and boresight patterns electrically. In addition, the plane with the maximum power level of the conical pattern can be changed between two orthogonal planes. Owing to a novel design of the switch geometry, the antenna does not need dc bias lines. The measured overlapping impedance bandwidth of the two modes is 6.6% with a center (S/ 11/

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http://hdl.handle.net/10453/115689