TY  - JOUR
TI  - High gain triple-band metamaterial-based antipodal vivaldi mimo antenna for 5g communications
SN  - 2072666X
ID  - scholars15132
A1  - Saeidi, T.
A1  - Ismail, I.
A1  - Noghanian, S.
A1  - Alhawari, A.R.H.
A1  - Abbasi, Q.H.
A1  - Imran, M.A.
A1  - Zeain, M.Y.
A1  - Ali, S.M.
Y1  - 2021///
N1  - cited By 9
SP  - 1
IS  - 3
PB  - MDPI AG
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102614318&doi=10.3390%2fmi12030250&partnerID=40&md5=b8d36cd2e69ec67a82a6fede456b5b9b
EP  - 25
KW  - Efficiency; Metamaterial antennas; Metamaterials; Microwave antennas; MIMO systems; Mobile antennas; Printed circuit boards; Spiral antennas
KW  -  Antenna element; Antipodal Vivaldi antenna; Decoupling methods; Dual polarized antennas; Metamaterial-based antennas; Multiple input multiple output antennas; Printed circuit boards (PCB); Radiation efficiency
KW  -  5G mobile communication systems
N2  - This paper presents a miniaturized dual-polarized Multiple Input Multiple Output (MIMO) antenna with high isolation. The antenna meets the constraints of sub-6 GHz 5G and the smartphonesâ?? X-band communications. A vertically polarized modified antipodal Vivaldi antenna and a horizontally polarized spiral antenna are designed and integrated, and then their performance is investigated. Three frequency bands of 3.8 GHz, 5.2 GHz, and 8.0 GHz are considered, and the proposed dual-polarized antenna is studied. High isolation of greater than 20 dB is obtained after integration of metamaterial elements, and without applying any other decoupling methods. The proposed triple-band metamaterial-based antenna has 1.6 GHz bandwidth (BW) (2.9 GHzâ??4.5 GHz), 13.5 dBi gain, and 98 radiation efficiency at 3.8 GHz. At 5.2 GHz it provides 1.2 GHz BW, 9.5 dBi gain, and 96 radiation efficiency. At 8.0 GHz it has 1 GHz BW, 6.75 dBi gain, and 92 radiation efficiency. Four antenna elements (with eight ports) were laid out orthogonally at the four corners of a mobile printed circuit board (PCB) to be utilized as a MIMO antenna for 5G communications. The performance of the MIMO antenna is examined and reported. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
VL  - 12
JF  - Micromachines
AV  - none
ER  -