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Eight Element Side Edged Framed MIMO Antenna Array for Future 5G Smart Phones.

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Summary
This summary is machine-generated.

This study introduces a cost-effective 8-element Multiple Input Multiple Output (MIMO) antenna for 5G mobile devices, demonstrating excellent isolation and low envelope correlation coefficient (ECC) for reliable performance.

Keywords:
5GLiquid Crystal Display (LCD)MIMO antennamobile terminalssmart citysmart phone

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Area of Science:

  • Electrical Engineering
  • Antenna Theory
  • Wireless Communications

Background:

  • Next-generation mobile terminals require advanced antenna systems for 5G and beyond.
  • Existing designs often face limitations in space and cost-effectiveness for mobile applications.

Purpose of the Study:

  • To propose a novel, cost-effective 8-element Multiple Input Multiple Output (MIMO) antenna system for sub-6 GHz 5G mobile terminals.
  • To investigate the performance of the proposed MIMO antenna under various conditions, including human hand and LCD effects.
  • To highlight the design's advantage of providing ample empty space on the main substrate for additional components.

Main Methods:

  • Design and simulation of a unit monopole antenna on an FR4 substrate.
  • Development of an 8-element MIMO array with specific dimensions (150 mm × 75 mm × 7 mm).
  • Analysis of antenna performance, including bandwidth, isolation, envelope correlation coefficient (ECC), and channel capacity.
  • Fabrication and measurement of a prototype to validate simulated results.

Main Results:

  • The single element resonates at 3.5 GHz with a 10 dB bandwidth of 200 MHz and a 6 dB bandwidth of 400 MHz.
  • The 8-element MIMO array achieves isolation better than -12 dB.
  • Envelope Correlation Coefficient (ECC) is consistently below 0.1 across all tested scenarios.
  • Maximum channel capacity reaches 38.5 bps/Hz within the band of interest.
  • Simulated and measured results show excellent agreement.

Conclusions:

  • The proposed FR4-based MIMO antenna design is suitable for 5G and beyond mobile terminals.
  • The design offers good performance metrics, including high isolation and low ECC, even with human body proximity and LCD interference.
  • The significant empty space on the substrate offers a unique advantage for integrating other mobile components, making it a versatile design for future mobile technology.