CMA-Based design of a Novel structure for isolation enhancement and Radiation Pattern correction in MIMO antennas
Abstract This paper presents novel MIMO microstrip patch antennas with dimensions of 40 × 80 × 1.6 mm³ incorporating a decoupling and pattern correction structure (DPCS) designed to mitigate mutual coupling and radiation pattern distortion, operating within 3.6–3.7 GHz. Using characteristic mode ana...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-84793-3 |
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| author | Myeong-Jun Kang Jaesun Park Hyuk Heo Longyue Qu Kyung-Young Jung |
| author_facet | Myeong-Jun Kang Jaesun Park Hyuk Heo Longyue Qu Kyung-Young Jung |
| author_sort | Myeong-Jun Kang |
| collection | DOAJ |
| description | Abstract This paper presents novel MIMO microstrip patch antennas with dimensions of 40 × 80 × 1.6 mm³ incorporating a decoupling and pattern correction structure (DPCS) designed to mitigate mutual coupling and radiation pattern distortion, operating within 3.6–3.7 GHz. Using characteristic mode analysis (CMA), two key modes affecting coupling and pattern degradation are identified, with the DPCS strategically positioned to address these issues. Unlike other decoupling techniques, the DPCS requires no additional space or structural complexity, making it suitable for 5G MIMO systems. The proposed design achieves isolation up to 90 dB and enhances the realized gain of Port 2 by 3 dB at boresight in simulations. Fabricated antennas were measured, achieving peak isolation of 80 dB in an anechoic chamber. Additionally, measurements in a noisy environment confirmed the robustness of the design under realistic conditions. Measured radiation patterns verified the DPCS’s ability to correct the radiation pattern. Key MIMO performance metrics, including ECC (2 × 10⁻⁴), DG (≈ 10), CCL (< 0.2 bits/s/Hz), MEG (≈ -7 dB), and TARC (< -12 dB), affirmed the design’s superior performance. The proposed structure can be applied to a variety of applications such as high-density urban wireless networks and IoT systems, where maintaining high isolation and reliable communication are critical requirements. |
| format | Article |
| id | doaj-art-004260d682be469e9f5a0db3906cefb9 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-004260d682be469e9f5a0db3906cefb92025-01-05T12:22:45ZengNature PortfolioScientific Reports2045-23222025-01-0115111510.1038/s41598-024-84793-3CMA-Based design of a Novel structure for isolation enhancement and Radiation Pattern correction in MIMO antennasMyeong-Jun Kang0Jaesun Park1Hyuk Heo2Longyue Qu3Kyung-Young Jung4Department of Electronic Engineering, Hanyang UniversityDepartment of Electronic Engineering, Hanyang UniversityDepartment of Electronic Engineering, Hanyang UniversitySchool of Electronics and Information Engineering, Harbin Institute of Technology (Shenzhen)Department of Electronic Engineering, Hanyang UniversityAbstract This paper presents novel MIMO microstrip patch antennas with dimensions of 40 × 80 × 1.6 mm³ incorporating a decoupling and pattern correction structure (DPCS) designed to mitigate mutual coupling and radiation pattern distortion, operating within 3.6–3.7 GHz. Using characteristic mode analysis (CMA), two key modes affecting coupling and pattern degradation are identified, with the DPCS strategically positioned to address these issues. Unlike other decoupling techniques, the DPCS requires no additional space or structural complexity, making it suitable for 5G MIMO systems. The proposed design achieves isolation up to 90 dB and enhances the realized gain of Port 2 by 3 dB at boresight in simulations. Fabricated antennas were measured, achieving peak isolation of 80 dB in an anechoic chamber. Additionally, measurements in a noisy environment confirmed the robustness of the design under realistic conditions. Measured radiation patterns verified the DPCS’s ability to correct the radiation pattern. Key MIMO performance metrics, including ECC (2 × 10⁻⁴), DG (≈ 10), CCL (< 0.2 bits/s/Hz), MEG (≈ -7 dB), and TARC (< -12 dB), affirmed the design’s superior performance. The proposed structure can be applied to a variety of applications such as high-density urban wireless networks and IoT systems, where maintaining high isolation and reliable communication are critical requirements.https://doi.org/10.1038/s41598-024-84793-3Characteristic mode analysisDecoupling structureMicrostrip patch antennaMutual couplingPattern correction |
| spellingShingle | Myeong-Jun Kang Jaesun Park Hyuk Heo Longyue Qu Kyung-Young Jung CMA-Based design of a Novel structure for isolation enhancement and Radiation Pattern correction in MIMO antennas Scientific Reports Characteristic mode analysis Decoupling structure Microstrip patch antenna Mutual coupling Pattern correction |
| title | CMA-Based design of a Novel structure for isolation enhancement and Radiation Pattern correction in MIMO antennas |
| title_full | CMA-Based design of a Novel structure for isolation enhancement and Radiation Pattern correction in MIMO antennas |
| title_fullStr | CMA-Based design of a Novel structure for isolation enhancement and Radiation Pattern correction in MIMO antennas |
| title_full_unstemmed | CMA-Based design of a Novel structure for isolation enhancement and Radiation Pattern correction in MIMO antennas |
| title_short | CMA-Based design of a Novel structure for isolation enhancement and Radiation Pattern correction in MIMO antennas |
| title_sort | cma based design of a novel structure for isolation enhancement and radiation pattern correction in mimo antennas |
| topic | Characteristic mode analysis Decoupling structure Microstrip patch antenna Mutual coupling Pattern correction |
| url | https://doi.org/10.1038/s41598-024-84793-3 |
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