Abstract
This work demonstrates an integrated multiple-input multiple-output (MIMO) antenna solution for Long Term Evolution (LTE) and Millimeter-Wave (mm-wave) 5G wireless communication services. The proposed structure is comprised of a two-element LTE MIMO antenna, and a four-element 5G MIMO configuration with rectangular and circular defects in the ground plane. For experimental validation, the proposed structure is fabricated on a Rogers RO4350B substrate with 0.76 mm thickness. The overall substrate dimensions are 75 mm × 110 mm. The proposed structure is capable of operating at 5.29–6.12 GHz (LTE 46 and 47 bands) and 26–29.5 GHz (5G mm-wave) frequency bands. Additionally, the measured peak gain of 5.13 and 9.53 dB is attained respectively for the microwave and mm-wave antennas. Furthermore, the analysis of the MIMO performance metrics demonstrates good characteristics, and excellent field correlation performance across the operating bands. Furthermore, the analysis of the Specific Absorption Rate (SAR) and Power Density (PD) at the lower frequency band (5.9 GHz) and PD only at mm-Wave frequency band (28 GHz) verifies that the proposed antenna system satisfies the international human safety standards. Therefore, the proposed integrated MIMO antenna configuration ascertains to be a potential contender for the forthcoming communication applications.
Highlights
In recent years, the notable growth of wireless devices has substantially increased efforts to develop advanced standards for communication networks [1,2]
Current Distribution for: (a) Long Term Evolution (LTE) multiple-input multiple-output (MIMO) Antennas at 5.9 GHz; (b) 5G Ant3; (c) 5G Ant4; Ant4; (d) 5G Ant5; (e) 5G Ant6 (For all 5G Antennas current distribution is investigated at 28 GHz)
An integrated 4G/LTE and 5G MIMO antenna system for wireless communication applications is demonstrated in this work
Summary
The notable growth of wireless devices has substantially increased efforts to develop advanced standards for communication networks [1,2]. Several reported works demonstrate the efforts of researchers to satisfy users’ expectations of high-throughput for 4G and LTE (Long Term Evolution) communication applications [3,4,5,6,7]. This has promoted the development of next-generation 5G mobile and broadband wireless communication, featuring higher. Sensors 2020, 20, 3926 data rates and greater channel capacity compared to 4G/LTE [8,9]. With increasing demand for greater capacity and wider bandwidth, concerns about bandwidth inadequacy at the sub-6 GHz frequency spectrum have been raised. To realize the forthcoming requirements of high capacity and throughput for 5G communication, the spectrum at the millimeter-waves is envisioned to be utilized [10,11]
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