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Area of Science:

  • Electrical Engineering
  • Antenna Theory
  • Wireless Communications

Background:

  • Multiple-input-multiple-output (MIMO) antenna systems are crucial for enhancing wireless communication performance.
  • Existing MIMO antenna designs often face limitations in terms of profile, flexibility, and scalability.

Purpose of the Study:

  • To propose and validate a novel low-profile and flexible MIMO antenna array.
  • To demonstrate the feasibility of a compact E-plane configured microstrip patch array with effective decoupling.

Main Methods:

  • Design and fabrication of a 1x4 MIMO antenna array using microstrip patches in an E-plane configuration.
  • Decoupling elements utilizing shorted quarter-wavelength stubs for reduced element spacing (0.032 λ).
  • Experimental validation of the prototype's performance characteristics at 4.8 GHz.

Main Results:

  • Achieved a reflection coefficient below -10 dB, indicating efficient power transfer.
  • Demonstrated isolation greater than 20 dB between antenna elements, crucial for MIMO performance.
  • Obtained broadside gain of approximately 4.5 dBi with favorable radiation patterns.
  • Confirmed operational capability in bending modes and potential for large-scale array integration.

Conclusions:

  • The proposed flexible MIMO antenna array exhibits excellent operational features, including good impedance matching, high isolation, and gain.
  • The compact design and bending capability make it suitable for integration into various modern electronic devices.
  • The antenna's scalability supports its application in advanced, large-scale MIMO systems for future wireless networks.