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Abstract
A multi-purpose dual Multiple-Input-Multiple-Output (MIMO) antenna system for 5G mobile systems is presented in this paper. The proposed antenna consists of two sets of MIMO antennas on a single board. The 8-port MIMO antenna, placed on the board, is working over 3.5 GHz (3.4 GHz-3.6 GHz) 5G band with dimensions 150 mm ×70 mm. The 4-port MIMO system, placed on the chassis, is operating over 5.2 GHz WLAN/5.5 GHz WiMAX/5.8 GHz/6 GHz WiFi band with dimensions 20 mm × 7 mm. The prototype is designed and fabricated on FR4 (ε <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</sub> =4.4 and tanδ = 0.02) substrate with 0.8 mm thickness. The overall design of the entire dual MIMO system is very minimal leaving ample space for other components to be placed on the board. The presence of two separate MIMO antennas in the proposed prototype aids in using the 5G frequencies and 4G frequencies independently. Since no active elements like diodes, switches etc. are involved in the proposed design to switch between different bands, the prototype is free from any ohmic losses. It is also worth noticing that the proposed antenna operates in the highly anticipated next generation WiFi 6E spectrum.
Highlights
C OMMUNICATION has played a vital role in the evolution of mankind
In [17], the authors presented a quad antenna system for cell phones, consisting of a dual port MIMO operating over the frequency range of 1.4 GHz to 3.7 GHz in conjunction with two other antennas working on other different bands
We propose a dual-MIMO system where a 8port MIMO antenna system operating at 3.5 GHz frequency band is integrated with a 4-port multiband MIMO antenna system operating in the frequency range from 4.86 GHz to 6.93 GHz covering 5.2 GHz WLAN, 5.5 GHz WiMAX, 5.8 GHz WiFi and three channels of 6 GHz WiFi bands
Summary
C OMMUNICATION has played a vital role in the evolution of mankind. The mode of communication between human beings has been subjected to constant development and improvement since the beginning of mankind. The authors theoretically demonstrated that the use of antenna arrays in a communication system in a CDMA could greatly enhance its efficiency These studies laid the foundation for mulitple-input-multiple-output (MIMO) antenna systems. In [17], the authors presented a quad antenna system for cell phones, consisting of a dual port MIMO operating over the frequency range of 1.4 GHz to 3.7 GHz in conjunction with two other antennas working on other different bands. It can be argued that a single frequency reconfigurable MIMO antenna would help in switching the operating frequency bands While this is true, it should be noted that such a reconfigurable antenna would make use of some kind of switching mechanisms like diodes, liquid crystals, motors, dielectric strips [21] etc. The addition of these components adds to the associated losses, payload and other complexi-
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