Yes / In this work, miniaturized tunable two-antenna MIMO systems composed of printed F-slot shaped is developed to operate in the GPS, PCS, DCS and UMTS bands. The two-element MIMO antenna occupies a volume of 50 × 37.5 ×1.6 mm3, and is printed on an FR4 substrate. Initially, the frequency tunability of the MIMO antennas was verified by lumped capacitors with values between 0.75 to 2.75 pF to achieve a tuning range from 1.55 to 2.07GHz while the low mutual coupling between the radiators was accomplished by adding an I-shaped branch to a cut-away ground plane. The two antennas are then loaded with varactors to simultaneously achieve miniaturization and tunability. Simulation and measurement results demonstrate the successful implementation of a tunable MIMO with coupling reduction mechanism for a portable handheld wireless transceiver. The channel capacity of the proposed antenna is investigated and found to be close to that of an un-correlated system with efficient diversity in which the mutual coupling across the full bandwidth was better than -13dB. Owing to the compact size and ease of manufacture, the proposed antennas can be a promising solution for adaptive MIMO systems in handheld devices. / This work has been performed in the framework of ARTEMOS project under work programme ENIAC JU 2010 and FCT (Fundação para a Ciência e Tecnologia) .The authors would like to thank Datong PLC (Leeds LS18 4EG, West Yorkshire, U.K.), for their financial support of the Knowledge Transfer Partnership (KTP No: 008734).
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/8481 |
| Date | 18 August 2014 |
| Creators | Elfergani, Issa T., Hussaini, Abubakar S., Rodriguez, Jonathan, Abd-Alhameed, Raed, See, Chan H., Jan, Naeem A., Zhu, Shaozhen (Sharon), McEwan, Neil J. |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Article, Accepted Manuscript |
| Rights | © 2014 The Institution of Engineering and Technology. This paper is a preprint of a paper accepted by IET Science, Measurement and Technology and is subject to Institution of Engineering and Technology Copyright (http://scitation.aip.org/journals/doc/IEEDRL-home/info/support/copyinf.jsp). The copy of record is available at IET Digital Library. |
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