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Related Concept Videos

Maximum Power Transfer01:16

Maximum Power Transfer

239
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
239

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Dual-Band Monopole MIMO Antenna Array for UAV Communication Systems.

Muhammad Usman Raza1, Hongwei Ren1, Sen Yan1

  • 1School of Information and Communications Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

Sensors (Basel, Switzerland)
|September 28, 2024
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Summary

This study introduces a compact, dual-band four-port multiple-input-multiple-output (MIMO) antenna array for unmanned aerial vehicle (UAV) communications. The proposed design offers wide bandwidths and high efficiency, making it suitable for UAV applications.

Keywords:
MIMO monopole antennaUAVcommunication systemdual-bandimpedance bandwidthssequentialtransmission efficiency

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Area of Science:

  • Antenna Engineering
  • Wireless Communication Systems
  • Aerospace Engineering

Background:

  • Unmanned aerial vehicles (UAVs) require efficient and compact communication systems.
  • Existing antenna solutions often face limitations in bandwidth, efficiency, and integration for UAVs.

Purpose of the Study:

  • To develop and evaluate a compact, low-profile, four-port dual-band MIMO antenna array for UAVs.
  • To achieve wide impedance bandwidths and high transmission efficiency on a thin substrate.
  • To ensure good isolation and diversity performance for reliable UAV communication.

Main Methods:

  • Design of a four-element square MIMO array with modified T-shaped monopole radiators.
  • Integration of sequential rotations (0°, 90°, 180°, 270°) for enhanced performance.
  • Fabrication and experimental evaluation of a prototype on a Rogers RT5880 substrate.

Main Results:

  • Achieved wide impedance bandwidths of 46.15% at 2.4 GHz and 31.85% at 5.8 GHz.
  • Demonstrated high isolation (23 dB at 2.4 GHz, 19 dB at 5.8 GHz) and total efficiency (96% at 2.4 GHz, 89% at 5.8 GHz).
  • Measured diversity parameters include an ECC below 0.01 and a DG of approximately 10.

Conclusions:

  • The proposed dual-band MIMO antenna array is compact, efficient, and suitable for UAV communication systems.
  • The design meets the demanding requirements for reliable wireless connectivity in aerial platforms.
  • Experimental results validate the simulated performance, confirming its practical applicability.