Design & analysis of a dual-band MIMO antenna to reduce the mutual coupling

A compact dual wide-band multiple-input-multiple-output (MIMO) radiator is presented in this article. The MIMO radiator is developed on a 1.5 mm thick FR-4 substrate. The proposed structure is composed of U-shaped patches which are connected with small rectangular slit loaded circular rings and part...

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Bibliographic Details
Published in:Journal of instrumentation 2019-09, Vol.14 (9), p.P09023-P09023
Main Authors: Babu, K. Vasu, Anuradha, Prof. B., Das, Dr. Sudipta
Format: Article
Language:English
Subjects:
Chamfering
Correlation coefficients
Ground plane
Group delay
Impedance matching
Mutual coupling
Radiators
Substrates
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Summary:A compact dual wide-band multiple-input-multiple-output (MIMO) radiator is presented in this article. The MIMO radiator is developed on a 1.5 mm thick FR-4 substrate. The proposed structure is composed of U-shaped patches which are connected with small rectangular slit loaded circular rings and partial ground plane with chamfer edges. This arrangement is placed symmetrically at a far distance of 2.5 mm to achieve dual-operating bands with a high amount of isolation, radiation efficiencies and group delay between two radiators. The proposed compact dual-band radiator is resonating at 2.5/6.4 GHz frequencies and it provides isolation greater than 20 dB over the operating bands. The proposed design has a size of 0.45λ0×0.291λ0×0.03λ0 mm and |S11| of about 41.25 dB and 14.58 dB. This design has a wide impedance matching in the range of frequencies from 2.38 GHz to 3.17 GHz & 5.14 GHz to 7.39 GHz with |S21|
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/14/09/P09023