Modified U-Shaped Resonator as Decoupling Structure in MIMO Antenna


Iqbal, Amjad and Altaf, Ahsan and Abdullah, Mujeeb and Alibakhshikenari, Mohammad and Limiti, Ernesto and Kim, Sunghwan (2020) Modified U-Shaped Resonator as Decoupling Structure in MIMO Antenna. Electronics (Switzerland), 9 (8). p. 1321. ISSN 2079-9292

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This paper presents an isolation enhancement of two closely packed multiple-inputmultiple-output (MIMO) antenna system using a modified U-shaped resonator. The modifiedU-shaped resonator is placed between two closely packed radiating elements resonating at 5.4 GHzwith an edge to edge separation distance of 5.82 mm (λ◦/10). Through careful adjustment ofparametric modelling, the isolation level of−23 dB among the densely packed elements is achieved.The coupling behaviour of the MIMO elements is analysed by accurately designing the equivalentcircuit model in each step. The antenna performance is realized in the presence and absence ofdecoupling structure, and the results shows negligible effects on the antenna performance apartfrom mutual coupling. The simple assembly of the proposed modified U-shaped isolating structuremakes it useful for several linked applications. The proposed decoupling structure is compact innature, suppress the undesirable coupling generated by surface wave and nearby fields, and is easyto fabricate.

Item Type: Article
Uncontrolled Keywords: MIMO systems, isolation enhancement, surface waves, gain, circuit model, line resonators, MIMO antennas
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 27 Dec 2020 12:07
Last Modified: 27 Dec 2020 12:07


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