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首页> 外文期刊>International journal of communication systems >Reconfigurable circular patch MIMO antenna for 5G (sub-6 GHz) and WLAN applications
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Reconfigurable circular patch MIMO antenna for 5G (sub-6 GHz) and WLAN applications

机译：Reconfigurable circular patch MIMO antenna for 5G (sub-6 GHz) and WLAN applications

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摘要

In this article, a circular patch microstrip feed line monopole radiator with adimension of 15 × 20 × 1.6 mm~3 is proposed. An inverted L-shaped stub isemployed in the partial ground plane to achieve optimum bandwidth, radiationpattern and radiation efficiency. To further cover the sub-6 GHz spectrum(3.4–3.8 GHz) for future 5G communications, a two-element MIMO antennaconfiguration is designed by utilising the single element antenna. The edge-toedgedistance between the two elements is 0.15λ_0 (15 mm). The proposeantenna achieved dual-operating bands of 3.35–4.60 and 4.93–5.19 GHz in thediode (D) = ON state. The minimum isolation between 3.35–3.94 and 4.99–5.16 GHz frequency range is -14.5 and -12.5 dB, respectively, by incorporatinga rectangular stub between two inverted L-shaped stubs. The MIMOantenna has a peak gain of 2.68 dBi at 5.1 GHz frequency. The average totalefficiency at port-1 between 3.35–3.94 and 4.93–5.19 GHz frequency range is65, whereas at port-2 is 75. In terms of the envelop correlation coefficient(ECC), mean effective gain (MEG) and total active reflection coefficient(TARC), the proposed antenna's diversity performance characteristics areinvestigated and the obtained values are 0.09, ±3 and 3 dB, respectively. Thesuggested MIMO antenna is designed on a FR4 substrate with a dielectricconstant of 4.4 and an electrical dimension of 0.34λ_0 × 0.20λ_0 × 0.015λ_0 mm~3(where λ_0 represents the free space wavelength at lower cut-off frequency2.95 GHz). Therefore, the proposed antenna can find applications for rain orfog as well as for identification and tracking (weather radar) on S-band at3 GHz frequency, 5G (sub-6 GHz) and WLAN applications.

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