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Dual-band 5G MIMO antenna with enhanced coupling reduction using metamaterials
Daud Khan1, Ashfaq Ahmad1, Dong-You Choi2
1Information and Communication Engineering, Chosun University, Gwangju, 61452, South Korea.
Scientific Reports
|January 3, 2024
Summary
This study presents a compact dual-band MIMO antenna for 5G millimeter-wave applications. It achieves wide bandwidth and high isolation using metamaterials and ground plane modifications for improved performance.
Area of Science:
- Electrical Engineering
- Electromagnetics
- Antenna Theory
Background:
- 5G technology demands high-performance antennas for millimeter-wave frequencies.
- Miniaturization and high isolation are critical challenges in designing Multiple-Input Multiple-Output (MIMO) antenna systems.
- Existing antenna designs often struggle to balance size, bandwidth, and isolation for 5G applications.
Purpose of the Study:
- To introduce a miniaturized dual-band MIMO antenna system for 5G millimeter-wave communication.
- To achieve wide bandwidth and high isolation in a compact antenna design.
- To validate the antenna's performance for 28/38 GHz frequency bands.
Main Methods:
- Design and fabrication of a miniaturized dual-band MIMO antenna using a Rogers RT5880 substrate.
- Incorporation of ground plane modifications and metamaterials to enhance isolation and bandwidth.
- Performance analysis including isolation, bandwidth, envelope correlation coefficient, and diversity gain.
Main Results:
- The proposed antenna operates effectively in the 28/38 GHz bands with a compact size (3.8 x 3.7 x 0.787 mm).
- Metamaterials and ground plane modifications significantly improved isolation to -20 dB and -12 dB at 25 GHz and 37 GHz, respectively.
- Achieved enhanced bandwidths of 3.8-4.8 GHz (lower band) and 3.8-4.2 GHz (higher band), with an envelope correlation coefficient below 0.0001 and diversity gain > 9.99 dB.
Conclusions:
- The miniaturized dual-band MIMO antenna with metamaterials offers a viable solution for 5G millimeter-wave systems.
- The design demonstrates excellent performance metrics, including wide bandwidth, high isolation, and significant diversity gain.
- The proposed antenna is well-suited for next-generation wireless communication systems requiring compact and efficient radiating elements.
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