Implementation of spatial/polarization diversity for improved-performance circularly polarized multiple-input-multiple-output ultra-wideband antenna
Abstrakt
In this paper, spatial and polarization diversities are simultaneously implemented in an ultra-wideband (UWB) multiple-input-multiple-output (MIMO) antenna to reduce the correlation between the parallel-placed radiators. The keystone of the antenna is systematically modified coplanar ground planes that enable excitation of circular polarization (CP). To realize one sense of circular polarization as well as ultra-wideband operation, an extended rectangular slot is etched on the left-hand-side of the coplanar waveguide (CPW) feed. This is combined with the asymmetrical ground plane geometry on the right-hand-side of the feeding line. The current flowing on the slotted ground plane forms a quasi-loop and generates CP, whereas the combination of the vertical current on the feedline and the horizontal current on the asymmetric ground plane adds to the axial ratio (AR) bandwidth. To implement the MIMO design with polarization and spatial diversity, the position of the coplanar ground planes is switched with respect to the feedline, and placed in a parallel formation with the edge-to-edge distance of 0.29λ0 . All geometrical parameters are optimized at the full-wave level of description before prototyping and experimental characterization. Simulation and measured results indicate that the proposed MIMO antenna features approximately 82% impedance bandwidth from 2.9 GHz to 7.1 GHz and 68.5% (3.1 GHz- 6.35 GHz) AR bandwidth. Moreover, the peak envelop correlation coefficient (ECC) is below 0.003, which corresponds to almost no correlation between the radiators. The antenna can be operated with either bidirectional or unidirectional characteristics, covering multiple commercial application bands including WLAN and WiMax.
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- artykuły w czasopismach
- Opublikowano w:
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IEEE Access
nr 8,
strony 64112 - 64119,
ISSN: 2169-3536 - Język:
- angielski
- Rok wydania:
- 2020
- Opis bibliograficzny:
- Ullah U., Mabrouk I., Kozieł S., Al-Hasan M.: Implementation of spatial/polarization diversity for improved-performance circularly polarized multiple-input-multiple-output ultra-wideband antenna// IEEE Access -Vol. 8, (2020), s.64112-64119
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1109/access.2020.2984697
- Bibliografia: test
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- ISMAIL BEN MABROUK (Senior Member, IEEE) received the B.A.Sc. and M.A.Sc. degrees in electrical engineering from the University of Lille, Lille, France, in 2006 and 2007, respectively, and the Ph.D. degree in electrical engineering from the University of Quebec, Canada, in 2012. From 2007 to 2009, he was with Huawei Technologies, Paris, France. He joined the Wireless Devices and Systems (WiDeS) Group, University of Southern California, Los Angeles, CA, USA, in 2012. He is currently an Assistant Professor with the Al Ain University of Science and Technology, Abu Dhabi, UAE. His research activities have been centered on propagation studies for multiple-input and multiple-output (MIMO) sys- tems, measurement campaigns in special environments, WBAN, and antenna design at the millimeter-wave and THz frequencies. SLAWOMIR KOZIEL (Senior Member, IEEE) received the M.Sc. and Ph.D. degrees in electronic engineering from the Gdansk University of Tech- nology, Poland, in 1995 and 2000, respectively, and the M.Sc. degree in theoretical physics and the M.Sc. and Ph.D. degrees in mathematics from the University of Gdansk, Poland, in 2000, 2002, and 2003, respectively. He is currently a Professor with the School of Science and Engineering, Reykjavík University, Iceland. His research interests include CAD and modeling of microwave and antenna structures, simulation-driven design, surrogate-based optimization, space mapping, circuit theory, analog signal processing, evolutionary computation, and numerical analysis. MUATH AL-HASAN (Senior Member, IEEE) received the B.A.Sc. degree in electrical engineer- ing from the Jordan University of Science and Technology, Jordan, in 2005, the M.A.Sc. degree in wireless communications from Yarmouk Uni- versity, Jordan, in 2008, and the Ph.D. degree in telecommunication engineering from the Institut National de la Recherche Scientifique (INRS), Université du Québec, Canada, 2015. From 2013 to 2014, he was with Planets Inc., CA, USA. He joined Concordia University, Canada, as a Postdoctoral Fellow- ship, in May 2015. He is currently an Assistant Professor with Al Ain University, United Arab Emirates. His current research interests include antenna design at millimeter-wave and Terahertz frequencies, electromag- netic bandgap (EBG) structures, and channel measurements in multiple-input and multiple-output (MIMO) systems. VOLUME 8, 2020 otwiera się w nowej karcie
- Weryfikacja:
- Politechnika Gdańska
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