A compact triband miniaturized MIMO antenna for WLAN applications

Autor: Mohd Fairus Mohd Yusoff, Murtala Aminu-Baba, Mohamad Kamal A. Rahim, Aloysius Adya Pramudita, Irene Kong Cheh Lin, K. I. Jahun, Farid Zubir, M.M. Gajibo, Adamu Y Iliyasu
Rok vydání: 2021
Předmět:
Zdroj: AEU - International Journal of Electronics and Communications. 136:153767
ISSN: 1434-8411
DOI: 10.1016/j.aeue.2021.153767
Popis: This paper proposes a four-port, four-element multi-band Multiple-Input Multiple-Output (MIMO) antenna array that resonates at 2.4 GHz, 2.9 GHz, and/or 5.8 GHz frequency bands for WLAN applications. A Complementary Split Ring Resonator (CSRR) was designed on the ground plane of the FR4 substrate with a rectangular patch antenna on the top plane for antenna size miniaturization, bandwidth improvement, compactness, and isolation enhancement. At first, the presence of the CSRR on the conventional antenna creates additional frequency bands and reduces the frequency of the conventional patch antenna from 24.2 GHz to 5.8 GHz. Even though the CSRR as radiating elements are closer to each other at λ/4 in the MIMO design, minimum isolation is achieved by limiting the unnecessary surface current flow that exists between the elements of the antenna. Consequently, an orthogonal method of the antenna element is adopted for the four-port MIMO antenna system with high port-to-port measured isolation of less than −19 dB, −18 dB, and –22 dB for 2.4 GHz, 2.9 GHz, and 5.8 GHz frequency bands respectively. Antenna size reduction of 96.87%, 95.41%, and 81.10% and gain of 3.94 dBi, 3.80 dBi, and 4.08 dBi were achieved for the miniaturized multi-band antenna operating at 2.4 GHz, 2.9 GHz, and 5.8 GHz frequency bands, respectively. The results also provided overall good diversity performances with the ECC 9.98, MEG
Databáze: OpenAIRE
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