Reconfigurable MIMO Antenna for Integrated-Metal-Rimmed Smartphone Applications

A reconfigurable full-metal-rimmed MIMO antenna is designed and proposed for WWAN/LTE smartphones. This antenna consists of two centro-symmetrically distributed antenna elements and radiation structures using the unbroken metal rim in plastic casing. It can achieve a good isolation of more than 17dB...

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Bibliographic Details
Published in:IEEE access 2017-01, Vol.5, p.21223-21228
Main Authors: Xu, Zi-Qiang, Sun, Yang-Tao, Zhou, Qiang-Qiang, Ban, Yong-Ling, Li, Yuan-Xun, Ang, Simon S.
Format: Article
Language:English
Subjects:
antenna
Antennas
Bandwidth
Channel capacity
Correlation coefficients
Couplings
Feeds
integrated-metal rim
Metals
MIMO
MIMO (control systems)
Reconfiguration
Resonant frequency
Smartphones
Wireless communications
WWAN/LTE
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Summary:A reconfigurable full-metal-rimmed MIMO antenna is designed and proposed for WWAN/LTE smartphones. This antenna consists of two centro-symmetrically distributed antenna elements and radiation structures using the unbroken metal rim in plastic casing. It can achieve a good isolation of more than 17dB over the entire operation bands. Each antenna element occupies a small ground area of 30\times 6 mm 2 . The U-shaped feeding line provides a coupled feed and the antenna element generates four typical loop resonant modes. Using reconfigurable technique to combine these four resonant modes, this hepta-band MIMO antenna can satisfactory cover lower bands of GSM850/900 and higher bands of GSM1800/1900/ UMTS/LTE2300/2500. A prototype MIMO antenna was fabricated and the measured results of S-parameters, antenna efficiency and gain, envelope correlation coefficient, mean effective gain, and channel capacity are reported.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2017.2757949