Systematic Design Method for Mutual Coupling Reduction in Closely Spaced Patch Antennas
In this article, a systematic design approach is presented to reduce the mutual coupling between a pair of closely spaced microstrip patch antennas (MPAs). This method can effectively overcome the main drawback of previous two-path cancellation methods, i.e., lack a systematic design guideline and h...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Open Journal of Antennas and Propagation |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10083281/ |
| _version_ | 1797370510104854528 |
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| author | Hui Deng Lei Zhu Zhao-An Ouyang |
| author_facet | Hui Deng Lei Zhu Zhao-An Ouyang |
| author_sort | Hui Deng |
| collection | DOAJ |
| description | In this article, a systematic design approach is presented to reduce the mutual coupling between a pair of closely spaced microstrip patch antennas (MPAs). This method can effectively overcome the main drawback of previous two-path cancellation methods, i.e., lack a systematic design guideline and heavily rely on the time-expensive trial-and-error procedure to mitigate mutual coupling in a best-effort manner. To this end, we first propose the concept and workflow of the systematic design method, and introduce the circuit-level modeling upon the proposed two coupling routes. Then, prototyped on a practical and simple physical structure, we perform certain accurate extractions and derive the rigorous conditions for both of isolation between two patches and impedance matching of a single patch based on these two paths. Afterwards, according to the circuit-level discussion on lumped elements, the corresponding decoupling structure could be implemented substantially and designed quantitatively at the antenna level for particularized closely spaced MPAs. Finally, a prototype is simulated, fabricated, and measured to validate the proposed method. The results show that the circuit-model calculation, full-wave simulation, and measurement are in good agreement. By virtue of such a simple decoupling structure, the poor 7-dB isolation is dramatically improved to 58 dB, and the isolation is enhanced beyond 20 dB in the entire impedance matching bandwidth range of 4.38 ~ 4.60 GHz (4.9%), with the closely center-to-center spacing of <inline-formula> <tex-math notation="LaTeX">$0.37~{\lambda }_{0}$ </tex-math></inline-formula>. |
| first_indexed | 2024-03-08T18:03:35Z |
| format | Article |
| id | doaj.art-a7b41a58d0ea45d19f1889ddd18f336e |
| institution | Directory Open Access Journal |
| issn | 2637-6431 |
| language | English |
| last_indexed | 2024-03-08T18:03:35Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Antennas and Propagation |
| spelling | doaj.art-a7b41a58d0ea45d19f1889ddd18f336e2024-01-02T00:02:17ZengIEEEIEEE Open Journal of Antennas and Propagation2637-64312023-01-01434936010.1109/OJAP.2023.326269810083281Systematic Design Method for Mutual Coupling Reduction in Closely Spaced Patch AntennasHui Deng0https://orcid.org/0000-0002-7603-4982Lei Zhu1Zhao-An Ouyang2https://orcid.org/0000-0002-9673-5954Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau, ChinaDepartment of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau, ChinaDepartment of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau, ChinaIn this article, a systematic design approach is presented to reduce the mutual coupling between a pair of closely spaced microstrip patch antennas (MPAs). This method can effectively overcome the main drawback of previous two-path cancellation methods, i.e., lack a systematic design guideline and heavily rely on the time-expensive trial-and-error procedure to mitigate mutual coupling in a best-effort manner. To this end, we first propose the concept and workflow of the systematic design method, and introduce the circuit-level modeling upon the proposed two coupling routes. Then, prototyped on a practical and simple physical structure, we perform certain accurate extractions and derive the rigorous conditions for both of isolation between two patches and impedance matching of a single patch based on these two paths. Afterwards, according to the circuit-level discussion on lumped elements, the corresponding decoupling structure could be implemented substantially and designed quantitatively at the antenna level for particularized closely spaced MPAs. Finally, a prototype is simulated, fabricated, and measured to validate the proposed method. The results show that the circuit-model calculation, full-wave simulation, and measurement are in good agreement. By virtue of such a simple decoupling structure, the poor 7-dB isolation is dramatically improved to 58 dB, and the isolation is enhanced beyond 20 dB in the entire impedance matching bandwidth range of 4.38 ~ 4.60 GHz (4.9%), with the closely center-to-center spacing of <inline-formula> <tex-math notation="LaTeX">$0.37~{\lambda }_{0}$ </tex-math></inline-formula>.https://ieeexplore.ieee.org/document/10083281/Closely spaced patch antennasdecouplingmultiple-input multiple-output (MIMO) antennamutual couplingsystematic design method |
| spellingShingle | Hui Deng Lei Zhu Zhao-An Ouyang Systematic Design Method for Mutual Coupling Reduction in Closely Spaced Patch Antennas IEEE Open Journal of Antennas and Propagation Closely spaced patch antennas decoupling multiple-input multiple-output (MIMO) antenna mutual coupling systematic design method |
| title | Systematic Design Method for Mutual Coupling Reduction in Closely Spaced Patch Antennas |
| title_full | Systematic Design Method for Mutual Coupling Reduction in Closely Spaced Patch Antennas |
| title_fullStr | Systematic Design Method for Mutual Coupling Reduction in Closely Spaced Patch Antennas |
| title_full_unstemmed | Systematic Design Method for Mutual Coupling Reduction in Closely Spaced Patch Antennas |
| title_short | Systematic Design Method for Mutual Coupling Reduction in Closely Spaced Patch Antennas |
| title_sort | systematic design method for mutual coupling reduction in closely spaced patch antennas |
| topic | Closely spaced patch antennas decoupling multiple-input multiple-output (MIMO) antenna mutual coupling systematic design method |
| url | https://ieeexplore.ieee.org/document/10083281/ |
| work_keys_str_mv | AT huideng systematicdesignmethodformutualcouplingreductionincloselyspacedpatchantennas AT leizhu systematicdesignmethodformutualcouplingreductionincloselyspacedpatchantennas AT zhaoanouyang systematicdesignmethodformutualcouplingreductionincloselyspacedpatchantennas |