Modal Resonant Frequencies and Radiation Quality Factors of Microstrip Antennas
The chosen rectangular and fractal microstrip patch antennas above an infinite ground plane are analyzed by the theory of characteristic modes. The resonant frequencies and radiation Q are evaluated. A novel method by Vandenbosch for rigorous evaluation of the radiation Q is employed for modal curre...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2012/490327 |
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| author | Jan Eichler Pavel Hazdra Miloslav Capek Milos Mazanek |
| author_facet | Jan Eichler Pavel Hazdra Miloslav Capek Milos Mazanek |
| author_sort | Jan Eichler |
| collection | DOAJ |
| description | The chosen rectangular and fractal microstrip patch antennas above an infinite ground plane are analyzed by the theory of characteristic modes. The resonant frequencies and radiation Q are evaluated. A novel method by Vandenbosch for rigorous evaluation of the radiation Q is employed for modal currents on a Rao-Wilton-Glisson (RWG) mesh. It is found that the resonant frequency of a rectangular patch antenna with a dominant mode presents quite complicated behaviour including having a minimum at a specific height. Similarly, as predicted from the simple wire model, the radiation Q exhibits a minimum too. It is observed that the presence of out-of-phase currents flowing along the patch antenna leads to a significant increase of the Q factor. |
| format | Article |
| id | doaj-art-cc17de1a932b4108a7eaf42b57805820 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-cc17de1a932b4108a7eaf42b578058202025-02-03T06:01:43ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772012-01-01201210.1155/2012/490327490327Modal Resonant Frequencies and Radiation Quality Factors of Microstrip AntennasJan Eichler0Pavel Hazdra1Miloslav Capek2Milos Mazanek3Department of Electromagnetic Field, Faculty of Electrical Engineering, Czech Technical University in Prague, Technická 2, 166 27 Prague, Czech RepublicDepartment of Electromagnetic Field, Faculty of Electrical Engineering, Czech Technical University in Prague, Technická 2, 166 27 Prague, Czech RepublicDepartment of Electromagnetic Field, Faculty of Electrical Engineering, Czech Technical University in Prague, Technická 2, 166 27 Prague, Czech RepublicDepartment of Electromagnetic Field, Faculty of Electrical Engineering, Czech Technical University in Prague, Technická 2, 166 27 Prague, Czech RepublicThe chosen rectangular and fractal microstrip patch antennas above an infinite ground plane are analyzed by the theory of characteristic modes. The resonant frequencies and radiation Q are evaluated. A novel method by Vandenbosch for rigorous evaluation of the radiation Q is employed for modal currents on a Rao-Wilton-Glisson (RWG) mesh. It is found that the resonant frequency of a rectangular patch antenna with a dominant mode presents quite complicated behaviour including having a minimum at a specific height. Similarly, as predicted from the simple wire model, the radiation Q exhibits a minimum too. It is observed that the presence of out-of-phase currents flowing along the patch antenna leads to a significant increase of the Q factor.http://dx.doi.org/10.1155/2012/490327 |
| spellingShingle | Jan Eichler Pavel Hazdra Miloslav Capek Milos Mazanek Modal Resonant Frequencies and Radiation Quality Factors of Microstrip Antennas International Journal of Antennas and Propagation |
| title | Modal Resonant Frequencies and Radiation Quality Factors of Microstrip Antennas |
| title_full | Modal Resonant Frequencies and Radiation Quality Factors of Microstrip Antennas |
| title_fullStr | Modal Resonant Frequencies and Radiation Quality Factors of Microstrip Antennas |
| title_full_unstemmed | Modal Resonant Frequencies and Radiation Quality Factors of Microstrip Antennas |
| title_short | Modal Resonant Frequencies and Radiation Quality Factors of Microstrip Antennas |
| title_sort | modal resonant frequencies and radiation quality factors of microstrip antennas |
| url | http://dx.doi.org/10.1155/2012/490327 |
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