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Low-cost Kirigami-inspired deployable dual-polarized MIMO antenna with angular pattern diversity.

Sayed Sabir Shah1, Slawomir Koziel2,3, Shahid Bashir1

  • 1Department of Electrical Engineering, University of Engineering and Technology, Peshawar, Pakistan.

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Summary

This study introduces a low-cost, deployable MIMO antenna using kirigami for dual polarization and pattern diversity. The design offers high performance and ease of fabrication for various microwave applications.

Keywords:
Deployable antennaFoldable antennaKirigami antennasYagi antenna

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Antenna Theory

Background:

  • The demand for compact, high-performance antennas is growing in wireless communication systems.
  • Deployable antennas offer advantages in terms of size and portability, but often face challenges in performance and fabrication complexity.

Purpose of the Study:

  • To present a novel, low-cost, and easily fabricated kirigami-inspired deployable Multiple-Input Multiple-Output (MIMO) antenna.
  • To achieve dual polarization and angular pattern diversity at 2 GHz for enhanced wireless communication.

Main Methods:

  • The antenna design is inspired by the Yagi antenna, incorporating two orthogonally oriented antennas on a foldable, staircase-shaped Kirigami structure made of PET.
  • Each antenna element consists of a monopole radiating element and a parasitic director, with a reflector integrated onto the structure.
  • The design utilizes kirigami principles for deployability and a PET substrate for flexibility and low-cost fabrication.

Main Results:

  • The proposed MIMO antenna operates at 2 GHz, achieving a peak gain of 9 dBi and a -10 dB impedance bandwidth of 630 MHz (1.82 GHz to 2.45 GHz).
  • Mutual coupling between antenna elements is below -15 dB, with total efficiency exceeding 80% across the operating band.
  • The antenna system meets MIMO specifications with an Envelope Correlation Coefficient (ECC) below 0.0025 and Channel Capacity Loss (CCL) below 0.35 bps/Hz.

Conclusions:

  • The kirigami-inspired deployable MIMO antenna demonstrates high performance, including good gain, wide bandwidth, and low mutual coupling.
  • The design's low cost and ease of fabrication, combined with its electrical performance, make it suitable for diverse microwave applications.
  • This work highlights the potential of kirigami structures in developing advanced, deployable antenna systems for future wireless technologies.