access icon free Compact four-element SRR-loaded dual-band MIMO antenna for WLAN/WiMAX/WiFi/4G-LTE and 5G applications

A four-element dual-band MIMO configuration consisting of split-ring resonator (SRR)-loaded inverted L-monopole antenna elements is realised. In the proposed antenna, the lower-frequency mode of the unloaded MIMO configuration merges with one SRR-induced antenna resonance. This leads to antenna operation around 2.93 GHz with wide impedance bandwidth (IBW) of 35.21%, encompassing the lower WLAN, worldwide interoperability for microwave access, wireless fidelity, fourth generation (4G)-long-term evolution and sub-6 GHz 5G bands. Furthermore, due to SRR loading, the proposed MIMO antenna exhibits a resonance at 5.68 GHz (IBW 6.86%), covering the upper WLAN band. Minimum inter-element isolation of 14 dB is achieved, in spite of the compact total area (, λ 0 = highest operating wavelength) and the presence of inter-connected ground plane. Both the working bands exhibit directional radiation patterns with average gain . Experiments on the fabricated antenna prototype confirm that the simulated and measured S-parameters, radiation patterns (envelope-correlation coefficient, channel capacity loss and total active reflection coefficient) are in good agreement.

Inspec keywords: Long Term Evolution; channel capacity; MIMO communication; 4G mobile communication; WiMax; antenna radiation patterns; 5G mobile communication; wireless LAN; monopole antennas; multifrequency antennas

Other keywords: Wi-Fi applications; 4G applications; envelope-correlation coefficient; WLAN applications; S-parameters; channel capacity loss; compact four-element SRR-loaded dual-band MIMO antenna; WiMax applications; interconnected ground plane; fourth generation applications; Long Term Evolution; directional radiation patterns; split-ring resonator-loaded inverted L-monopole antenna elements; 5G applications; MIMO performance metrics; LTE applications; total active reflection coefficient

Subjects: Radio links and equipment; Single antennas

References

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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2017.2825
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