From Antenna Optimization to MIMO Structures: A Unified Design Framework
Considering the improvements to modern communications and its requirements, antennas need to operate optimally at certain frequencies and have smaller dimensions. This study considered the optimization of two single antennas functioning at 2.4 GHz through geometry modification while preserving or ev...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-04-01
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| Series: | Technologies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2227-7080/13/4/153 |
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| Summary: | Considering the improvements to modern communications and its requirements, antennas need to operate optimally at certain frequencies and have smaller dimensions. This study considered the optimization of two single antennas functioning at 2.4 GHz through geometry modification while preserving or even improving their bandwidth, while also considering their gain. At first, the research was conducted using numerical modeling and, based on the conclusions drawn following this analysis, the next step was the experimental analysis of the structures. Due to their different geometrical appearances, the optimized antennas were compared, and then an optimum two-antenna MIMO structure was determined for both structures using different methods to decrease the mutual coupling. The optimum structure was obtained for both antennas. The new antennas functioned at 2.4 GHz but had different dimensions, thus a study into the decoupling methods was needed to see if the same methods were best for both cases. It was determined that shifting the two antennas in the MIMO was the better method when leaving a distance of <i>λ</i>/2 cannot be considered due to an increase in the dimensions of the structures, followed by a 90° shifting of the antennas. Also, the modification of the gain representation was observed through implementing the different decoupling methods to determine their influence on the beamforming. |
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| ISSN: | 2227-7080 |