Dual band 8 × 8 MIMO antenna system for DCS 1800 and 5G mobile applications

Abstract

A dual-band (1.6-1.9 GHz and 3.3-3.9 GHz) eight-antenna multiple-input and multiple-output (MIMO) system is proposed in this paper. The basic structure of the proposed antenna element consists of microstrip lines, cylindrically shaped shorting, and a rectangular-shaped defected ground structure (DGS). This structure is responsible for the production of a self-isolated MIMO system. The performance of the MIMO antenna system is investigated by the detailed analysis of S-parameters, Envelope Correlation Coefficient (ECC), Mean Effective Gain (MEG), Total Active Reflection Coefficient (TARC), and Channel Capacity (CC). The proposed MIMO antenna system offers a good Sparameter, radiation pattern, and satisfactory isolation characteristics. The MIMO antenna system is fabricated on lossy high dielectric (ε r = 4.3) FR4 substrate (loss tangent 0.02). The measured results are in good agreement with simulated one. The proposed antenna focuses on the 3.3-3.9 GHz frequency band, which covers bands 3.3-3.6 GHz (center frequency, 3.45 GHz) or 3.4-3.8 GHz (center frequency, 3.6 GHz) under the band below 6 GHz for 5G operation.

Dual-band independently tunable 8-element MIMO antenna for 5G smartphones

“…It is worth mentioning that the proposed dual-band 8-element MIMO antenna has shown isolation (<17 dB) with a slighter cost in terms of peak efficiency (64% & 71%). However, referential work is a poor trade-off between isolation and efficiency as shown in [18] , [19] . The work presented in [20] is a dual-band 8x8 MIMO design for 5G smartphones with high efficiency (65% -75%) in the lower band and (60% -71%) for higher frequency band, but sacrifices on shallow isolation (<10 dB) that make it unsuitable for the 5G smartphones.…”

Quad Element MIMO Antenna for C, X, Ku, and Ka-Band Applications

“…The variables used in Equation ( 11) are ρ RX and n total , which represents ECC and total efficiencies of receiving antennas. In order to estimate the ergodic channel capacity C, Equation ( 12) [52,53] is used.…”