Reconfigurable front-end antennas for cognitive radio applications
Reconfigurable front-end antennas for cognitive radio applications
- Author(s): Y. Tawk ; M. Bkassiny ; G. El-Howayek ; S.K. Jayaweera ; K. Avery ; C.G. Christodoulou
- DOI: 10.1049/iet-map.2010.0358
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- Author(s): Y. Tawk 1 ; M. Bkassiny 1 ; G. El-Howayek 1 ; S.K. Jayaweera 1 ; K. Avery 2 ; C.G. Christodoulou 1
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View affiliations
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Affiliations:
1: Electrical and Computer Engineering Department, University of New Mexico, Albuquerque, USA
2: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, USA
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Affiliations:
1: Electrical and Computer Engineering Department, University of New Mexico, Albuquerque, USA
- Source:
Volume 5, Issue 8,
6 June 2011,
p.
985 – 992
DOI: 10.1049/iet-map.2010.0358 , Print ISSN 1751-8725, Online ISSN 1751-8733
© The Institution of Engineering and Technology
Published
This study presents new antenna schemes suitable for cognitive radio communications. The antenna structures consist of a ultra wide band (UWB) sensing antenna, and a frequency reconfigurable communicating antenna both incorporated into the same substrate. Two different techniques to achieve the required frequency agility are proposed. The first one is based on a rotational motion of the radiating patch whereas the second is based on optical switching. The importance of these techniques is that no bias lines are needed as is seen in the case of RF MEMs, PIN diodes and lumped elements. Prototype antennas were fabricated and a good agreement was observed between the simulated and the measured data.
Inspec keywords: antenna radiation patterns; p-i-n diodes; micromechanical devices; ultra wideband antennas; microstrip antennas; cognitive radio
Other keywords:
Subjects: Radio links and equipment; Junction and barrier diodes; Single antennas; MEMS and NEMS device technology
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