Eight Element MIMO Antenna Array With Tri-Band Response for Modern Smartphones

Abstract

This article presents an eight-element tri-band Multiple Input Multiple Output (MIMO) antenna system for future handheld devices. The suggested antenna system consists of a main and sideboards. The feed lines are connected on the main board while the antennas are placed on sideboards, two on each side separately. The total dimension of the main board is 150 × 75 mm 2 , and the sideboard is 150 × 7 mm 2 . The antenna resonates at three distinct 5G allocated bands of 3.1-3.7 GHz, 4.47-4.91 GHz, and 5.5-6.0 GHz with impedance bandwidths of 600 MHz, 440 MHz, and 450 MHz, respectively. The antenna system provides pattern and spatial diversity characteristics with radiation and total efficiency of 78% and 62% and peak gain of 5.8 dBi. The MIMO system is fabricated, and the measured results are found to be in good agreement with the simulations. The isolation among radiating elements in all resonating bands is found to be >16 dB. The vital MIMO performance parameters such as envelope correlation coefficient (ECC) is less than 0.2 for any two antenna array meeting the required standard of less than 0.5 alongside the mean effective gain or MEG ratio of any two antenna meeting the required standard of less than 3 dB for power balance and optimal diversity. The Channel Capacity (CC) is found to be 41.1 bps/Hz, approximately 3 times that of 2 × 2 MIMO operations.

Eight element MIMO antenna for sub 6 GHz 5G cellular devices

“…This fifth-generation cellular network heralds a connectivity revolution, promising enhanced speed, reduced latency, and increased capacity compared to its predecessor, 4G. Within the complex framework of 5G's technological advancements, one crucial element stands outthe implementation of Multiple-Input Multiple-Output (MIMO) antenna technology [1,2]. The role of MIMO antennas in unlocking the true potential of 5G is paramount; they enable spatial multiplexing and beamforming, two critical techniques that significantly enhance data throughput and overall network performance.…”

Design of Wideband Decoupling Antenna Array for 5G Smartphones at N77/N78/N79/WLAN 5 GHz Bands

“…Previously proposed decoupling techniques mainly include loaded parasitic elements (PEs) [4][5][6], defective ground structures (DGSs) [7][8][9], neutralization lines (NLs) [10][11][12], diversity technique [13][14][15], common ground plane higher-order mode [16], self-curing decoupling technique [17,18], and decoupling network [19]. These techniques have been proven to be effective in solving the mutual coupling problem of traditional MIMO antennas.…”

Dual-Polarized Wideband 5G N77 Band Slotted MIMO Antenna System for Next-Generation Smartphones

“…Additionally, VOLUME 4, 2016 MIMO antennas combat multipath fading by intelligently combining signals received from different antennas, ensuring reliability and overall performance improvement. In order for 5G mobile phones to effectively transmit and receive signals, they typically require 4-8 antenna elements operating at the same frequency to work together [5][6]. However, because of close proximity of these elements, there is a phenomenon called coupling, which can negatively impact the efficiency of antenna data transmission.…”