Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground Structures
A new approach to controlling cross-polarization (XP), for either suppressing XP or exciting circular polarization (CP), in single-fed microstrip antennas using novel grid defected ground structures (GDGSs) is proposed. The key idea of GDGS is to construct defected ground structures (DGSs) from a gr...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Open Journal of Antennas and Propagation |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9096388/ |
| _version_ | 1819120620510642176 |
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| author | Yujie Zhang Zixiang Han Shanpu Shen Chi-Yuk Chiu Ross Murch |
| author_facet | Yujie Zhang Zixiang Han Shanpu Shen Chi-Yuk Chiu Ross Murch |
| author_sort | Yujie Zhang |
| collection | DOAJ |
| description | A new approach to controlling cross-polarization (XP), for either suppressing XP or exciting circular polarization (CP), in single-fed microstrip antennas using novel grid defected ground structures (GDGSs) is proposed. The key idea of GDGS is to construct defected ground structures (DGSs) from a grid of etched slots on a ground plane. The properties of each slot can be directly set by using either an open or short with fixed hardwires. The overall fixed hardwire configuration of the GDGS can be found straightforwardly by optimization of the XP or CP characteristics of the microstrip antenna. The importance of the approach is demonstrated by the results achieved. Results from two experimental prototypes are provided that demonstrate XP can be suppressed by 15 dB and CP can be excited with 78 MHz (2.2%) 3-dB axial ratio (AR) bandwidth and 6.6 dBic gain respectively on single-fed microstrip patch antennas. |
| first_indexed | 2024-12-22T06:23:34Z |
| format | Article |
| id | doaj.art-c9f30b752c1a449fa6aad0e77baf2d40 |
| institution | Directory Open Access Journal |
| issn | 2637-6431 |
| language | English |
| last_indexed | 2024-12-22T06:23:34Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Antennas and Propagation |
| spelling | doaj.art-c9f30b752c1a449fa6aad0e77baf2d402022-12-21T18:35:54ZengIEEEIEEE Open Journal of Antennas and Propagation2637-64312020-01-01121522310.1109/OJAP.2020.29954609096388Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground StructuresYujie Zhang0Zixiang Han1Shanpu Shen2Chi-Yuk Chiu3Ross Murch4Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong KongDepartment of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong KongDepartment of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong KongDepartment of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong KongDepartment of Electronic and Computer Engineering, Institute for Advanced Study, Hong Kong University of Science and Technology, Hong KongA new approach to controlling cross-polarization (XP), for either suppressing XP or exciting circular polarization (CP), in single-fed microstrip antennas using novel grid defected ground structures (GDGSs) is proposed. The key idea of GDGS is to construct defected ground structures (DGSs) from a grid of etched slots on a ground plane. The properties of each slot can be directly set by using either an open or short with fixed hardwires. The overall fixed hardwire configuration of the GDGS can be found straightforwardly by optimization of the XP or CP characteristics of the microstrip antenna. The importance of the approach is demonstrated by the results achieved. Results from two experimental prototypes are provided that demonstrate XP can be suppressed by 15 dB and CP can be excited with 78 MHz (2.2%) 3-dB axial ratio (AR) bandwidth and 6.6 dBic gain respectively on single-fed microstrip patch antennas.https://ieeexplore.ieee.org/document/9096388/Circular polarizationcross-polarizationdefected ground structurelinear polarization |
| spellingShingle | Yujie Zhang Zixiang Han Shanpu Shen Chi-Yuk Chiu Ross Murch Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground Structures IEEE Open Journal of Antennas and Propagation Circular polarization cross-polarization defected ground structure linear polarization |
| title | Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground Structures |
| title_full | Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground Structures |
| title_fullStr | Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground Structures |
| title_full_unstemmed | Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground Structures |
| title_short | Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground Structures |
| title_sort | polarization enhancement of microstrip antennas by asymmetric and symmetric grid defected ground structures |
| topic | Circular polarization cross-polarization defected ground structure linear polarization |
| url | https://ieeexplore.ieee.org/document/9096388/ |
| work_keys_str_mv | AT yujiezhang polarizationenhancementofmicrostripantennasbyasymmetricandsymmetricgriddefectedgroundstructures AT zixianghan polarizationenhancementofmicrostripantennasbyasymmetricandsymmetricgriddefectedgroundstructures AT shanpushen polarizationenhancementofmicrostripantennasbyasymmetricandsymmetricgriddefectedgroundstructures AT chiyukchiu polarizationenhancementofmicrostripantennasbyasymmetricandsymmetricgriddefectedgroundstructures AT rossmurch polarizationenhancementofmicrostripantennasbyasymmetricandsymmetricgriddefectedgroundstructures |