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A Compact Planar Monopole UWB MIMO Antenna for Short-Range Indoor Applications.
Shanmugam Kolangiammal1,2, Loganathan Balaji1, Miroslav Mahdal3
1Department of Electronics and Communication, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai 600062, India.
Sensors (Basel, Switzerland)
|May 13, 2023
Summary
A compact, four-element planar Multiple Input, Multiple Output (MIMO) antenna operates across ultra-wideband frequencies for diversity applications. Its design minimizes mutual coupling, offering excellent performance for wireless indoor communication.
Area of Science:
- Electrical Engineering
- Electromagnetics
- Antenna Theory
Background:
- Mutual coupling in Multiple Input, Multiple Output (MIMO) antennas can degrade performance.
- Ultra-wideband (UWB) technology offers high data rates for wireless communication.
- Diversity applications require antennas with good isolation and wide frequency coverage.
Purpose of the Study:
- To present a compact, four-element planar MIMO antenna for UWB diversity applications.
- To reduce mutual coupling between antenna elements through orthogonal positioning.
- To validate the antenna's performance for real-time wireless communication.
Main Methods:
- Designed and fabricated a 35 × 35 × 1.6 mm³ UWB MIMO antenna on an FR4 substrate.
- Utilized orthogonal positioning of unit cells to minimize mutual coupling.
- Adjusted ground plane and radiator dimensions for operation between 3.1 GHz and 10.6 GHz.
- Tested real-time performance using a National Instruments USRP (Universal Software Radio Peripheral).
Main Results:
- Achieved operation across the entire ultra-wideband (UWB) frequency range (3.1 GHz - 10.6 GHz).
- Demonstrated significantly reduced mutual coupling due to the orthogonal element placement.
- The antenna exhibited outstanding performance characteristics suitable for UWB applications.
- Real-time testing confirmed its effectiveness for diversity utilization.
Conclusions:
- The proposed compact UWB MIMO antenna is highly suitable for diversity applications in wireless indoor communication.
- The orthogonal positioning technique effectively mitigates mutual coupling, enhancing overall performance.
- The antenna's small size and wideband operation make it a practical solution for modern wireless systems.
Keywords:
directive gainenvelope correlation coefficient (ECC)monopolemultiple input multiple output (MIMO)ultra-wideband antenna (UWB)More Related Videos
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