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Summary
This summary is machine-generated.

This study introduces a novel multiple-input multiple-output (MIMO) antenna for 28 GHz millimeter-wave communications. The design achieves high gain and bandwidth with minimized interference, enhancing wireless system performance.

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Antenna Theory

Background:

  • Millimeter-wave (mmWave) frequencies, such as the 28 GHz band, are crucial for next-generation wireless communication systems.
  • High-performance antennas are essential for achieving the required data rates and reliability in mmWave communications.
  • Existing MIMO antenna designs often face challenges with mutual coupling and limited bandwidth at these frequencies.

Purpose of the Study:

  • To present a high-performance multiple-input multiple-output (MIMO) antenna design for the 28 GHz band.
  • To optimize antenna spacing and employ metamaterial-based decoupling to minimize interference.
  • To validate the design's suitability for advanced millimeter-wave communication systems.

Main Methods:

  • Design and simulation of a four-port MIMO antenna with 1 × 8 series-fed arrays per port.
  • Implementation of optimized antenna spacing and metamaterial cell structures for element decoupling.
  • Experimental evaluation of antenna parameters including gain, bandwidth, mutual coupling, and correlation coefficients.

Main Results:

  • Achieved peak gains of 15.5 dBi and bandwidths of 2 GHz.
  • Demonstrated exceptionally low mutual coupling below -40 dB.
  • Recorded envelope correlation coefficients of 0.00010 and diversity gains nearing 10 dB.
  • Measured channel loss capacity of 0.11 bit/s/Hz across the operational spectrum.

Conclusions:

  • The proposed MIMO antenna design offers significant performance improvements for 28 GHz applications.
  • Metamaterial-based decoupling effectively mitigates interference between antenna elements.
  • The design is a robust solution for various millimeter-wave communication systems requiring high gain and low correlation.