Inverted-L Shaped Wideband MIMO Antenna for Millimeter-Wave 5G Applications

Electronics

Hiren Mewada¹  Amit Patel²  Dharmendra Chauhan²  Arpan Desai²  Keyur Mahant²  Alpesh Vala²  Chemseddine Zebiri³  Issa Elfergani⁴  Jonathan Rodriguez⁴ 

[1] Department of Electrical Engineering, Prince Mohammad Bin Fahd University, Al Khobar 31952, Saudi Arabia;Department of Electronics and Communication Engineering, Chandubhai S Patel Institute of Technology (CSPIT), Charotar University of Science and Technology (CHARUSAT), Changa 388421, India;Laboratoire d’Electronique de Puissance et Commande Industrielle (LEPCI), Department of Electronics, University of Ferhat Abbas, Sétif -1-, Sétif 19000, Algeria;The Instituto de Telecomunicações, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal;

关键词: connected ground;    mm wave;    MIMO;    envelope correlation coefficient (ECC);    antenna;    inverted L antenna (ILA);   

DOI  :  10.3390/electronics11091387

来源: DOAJ

【 摘 要 】

Interconnected three-element and four-element wideband MIMO antennas have been proposed for millimeter-wave 5G applications by performing numerical computations and carrying out experimental measurements. The antenna structure is realized using Rogers 5880 substrate (ε_r = 2.2, tan δ = 0.0009), where the radiating element has the shape of an inverted L with a partial ground. The unit element is carefully designed and positioned (by orthogonally rotating the elements) to form three-element (case 1) and four-element (case 2) MIMO antennas. The interconnected ground for both cases is ascertained to increase the practical utilization of the resonator. The proposed MIMO antenna size is (0.95λ × 3λ) for case 1 and (2.01λ × 1.95λ) for case 2 (at the lowest functional frequency). Both the designs give an impedance bandwidth of approximately 26–40 GHz (43%). Moreover, they achieve greater than 15 dB isolation and more than 6 dBi gain with an ECC value lower than 0.02, which meets the MIMO diversity performance thus making the three-element and four-element MIMO antennas the best choice for millimeter-wave 5G applications.

【 授权许可】

Unknown