(3.1-20) GHz MIMO Antennas
Entity
UAM. Departamento de Tecnología Electrónica y de las ComunicacionesPublisher
ElsevierDate
2018-09Citation
10.1016/j.aeue.2018.07.026
AEU - International Journal of Electronics and Communications 94 (2018): 348-358
ISSN
1434-8411DOI
10.1016/j.aeue.2018.07.026Editor's Version
https://doi.org/10.1016/j.aeue.2018.07.026Subjects
SWB antenna; MIMO antenna; polarization diversity MIMO antenna; TelecomunicacionesRights
© 2018 Elsevier GmbH. All rights reserved.Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
Abstract
In this paper, a super-wideband (SWB) printed monopole antenna has been designed and manufactured. The measured frequency band in terms of reflection coefficient is from 3.1 to 20 GHz under a -10 dB criteria, thanks to the inclusion of a taper impedance adapter. This single antenna has been used to implement and analyze several MIMO antenna configurations, where the isolation between the compounding elements has been checked and optimized to improve the Envelope Correlation Coefficient. Two elements MIMO configurations (parallel ports or orthogonal diversity), as well as four element MIMO antennas with parallel ports are presented. Non continuous ground planes of the MIMO antenna elements with the inclusion of L shaped thin strips are proposed as valid structures to significantly improve the side by side mutual coupling from an initial peak value of 15 dB to better than 24 dB within the entire frequency band. In all the presented MIMO antenna structures, the measured values demonstrate good performance up to 20 GHz, both in reflection and isolation. Nevertheless, the influence of the mutual coupling effects has been checked as more significant in the lower part of the frequency band, especially in the 4 element MIMO configuration. The inclusion of the L shaped strips in the ground plane significantly mitigates this effect. Although the antennas have only been measured up to 20 GHz (upper frequency limit of the laboratory Vector Network Analyzer), simulations show satisfactory antennas’ performance up to 50 GHz.
Files in this item
Google Scholar:Ahmed Salih, Bazil Taha
-
Sánchez Olivares, Pablo
-
Masa Campos, José Luis
-
Moreno Vázquez, Fernando
This item appears in the following Collection(s)
Related items
Showing items related by title, author, creator and subject.