On the Design of Dual-Polarised Linear Antenna Arrays with Enhanced Port-to-Port Isolation
The paper describes the process of designing a dual-polarised linear antenna array with enhanced port-to-port isolation, with the example of a four-element array with isolation better than 60 dB for the U-NII 5.15–5.925 GHz band. As a single antenna, dual-polarised electromagnetically coupled micros...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/21/6105 |
| _version_ | 1797549686716891136 |
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| author | Dariusz Wójcik Maciej Surma Artur Noga Mirosław Magnuski |
| author_facet | Dariusz Wójcik Maciej Surma Artur Noga Mirosław Magnuski |
| author_sort | Dariusz Wójcik |
| collection | DOAJ |
| description | The paper describes the process of designing a dual-polarised linear antenna array with enhanced port-to-port isolation, with the example of a four-element array with isolation better than 60 dB for the U-NII 5.15–5.925 GHz band. As a single antenna, dual-polarised electromagnetically coupled microstrip antennas were used with port-to-port isolation not exceeding 25 dB. A significant improvement in the isolation of the array was achieved thanks to the application of a dedicated feeding network. On the basis of theoretical analysis, a mathematical model describing port-to-port isolation was developed. Circuit and full-wave simulations were carried out to show the influence of electromagnetic couplings between antennas and/or the microstrip lines of the feeding network and the selection of phase shifters/power dividers on the isolation. The fabricated prototype is characterised by a gain of about 14 dBi, polarisation purity of at least −27 dB within the main lobe and close to expectations isolation better than 57 dB within the whole operational band. |
| first_indexed | 2024-03-10T15:18:56Z |
| format | Article |
| id | doaj.art-8ffa22b3d6b34ebdb8010747adea4ac1 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T15:18:56Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-8ffa22b3d6b34ebdb8010747adea4ac12023-11-20T18:42:13ZengMDPI AGSensors1424-82202020-10-012021610510.3390/s20216105On the Design of Dual-Polarised Linear Antenna Arrays with Enhanced Port-to-Port IsolationDariusz Wójcik0Maciej Surma1Artur Noga2Mirosław Magnuski3Department of Electronics, Electrical Engineering and Microelectronics, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, PolandDepartment of Electronics, Electrical Engineering and Microelectronics, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, PolandDepartment of Electronics, Electrical Engineering and Microelectronics, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, PolandDepartment of Electronics, Electrical Engineering and Microelectronics, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, PolandThe paper describes the process of designing a dual-polarised linear antenna array with enhanced port-to-port isolation, with the example of a four-element array with isolation better than 60 dB for the U-NII 5.15–5.925 GHz band. As a single antenna, dual-polarised electromagnetically coupled microstrip antennas were used with port-to-port isolation not exceeding 25 dB. A significant improvement in the isolation of the array was achieved thanks to the application of a dedicated feeding network. On the basis of theoretical analysis, a mathematical model describing port-to-port isolation was developed. Circuit and full-wave simulations were carried out to show the influence of electromagnetic couplings between antennas and/or the microstrip lines of the feeding network and the selection of phase shifters/power dividers on the isolation. The fabricated prototype is characterised by a gain of about 14 dBi, polarisation purity of at least −27 dB within the main lobe and close to expectations isolation better than 57 dB within the whole operational band.https://www.mdpi.com/1424-8220/20/21/6105antenna arraysdual polarisationmicrostrip antennasisolation |
| spellingShingle | Dariusz Wójcik Maciej Surma Artur Noga Mirosław Magnuski On the Design of Dual-Polarised Linear Antenna Arrays with Enhanced Port-to-Port Isolation Sensors antenna arrays dual polarisation microstrip antennas isolation |
| title | On the Design of Dual-Polarised Linear Antenna Arrays with Enhanced Port-to-Port Isolation |
| title_full | On the Design of Dual-Polarised Linear Antenna Arrays with Enhanced Port-to-Port Isolation |
| title_fullStr | On the Design of Dual-Polarised Linear Antenna Arrays with Enhanced Port-to-Port Isolation |
| title_full_unstemmed | On the Design of Dual-Polarised Linear Antenna Arrays with Enhanced Port-to-Port Isolation |
| title_short | On the Design of Dual-Polarised Linear Antenna Arrays with Enhanced Port-to-Port Isolation |
| title_sort | on the design of dual polarised linear antenna arrays with enhanced port to port isolation |
| topic | antenna arrays dual polarisation microstrip antennas isolation |
| url | https://www.mdpi.com/1424-8220/20/21/6105 |
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