A Loop-Line Antenna with Enhanced Bandwidth of Circular Polarization
We investigate a circularly polarized (CP) transmission-line antenna composed of loop radiation elements, called a loop-line antenna. To enhance the CP wave bandwidth, an isolated loop radiation element is first analyzed using the method of moments. It is found that a CP wave bandwidth for a 3 dB ax...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2020/5216132 |
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| author | Kazuhide Hirose Motoshi Nakatsu Hisamatsu Nakano |
| author_facet | Kazuhide Hirose Motoshi Nakatsu Hisamatsu Nakano |
| author_sort | Kazuhide Hirose |
| collection | DOAJ |
| description | We investigate a circularly polarized (CP) transmission-line antenna composed of loop radiation elements, called a loop-line antenna. To enhance the CP wave bandwidth, an isolated loop radiation element is first analyzed using the method of moments. It is found that a CP wave bandwidth for a 3 dB axial-ratio criterion has a maximum value of 8%. On the basis of the analysis results, we design the loop-line antenna. It is found that the antenna shows a CP wave bandwidth of 6%, which is twice as wide as that of a conventional loop-line antenna. The analysis results are verified with experimental ones. In addition, a condition for wideband CP radiation is discussed and found to be a composite radiation element consisting of two CP loops. |
| format | Article |
| id | doaj-art-fb38382ad50647538253de7a05cd45e4 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-fb38382ad50647538253de7a05cd45e42025-02-03T01:05:13ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772020-01-01202010.1155/2020/52161325216132A Loop-Line Antenna with Enhanced Bandwidth of Circular PolarizationKazuhide Hirose0Motoshi Nakatsu1Hisamatsu Nakano2College of Engineering, Shibaura Institute of Technology, Tokyo 135-8548, JapanCollege of Engineering, Shibaura Institute of Technology, Tokyo 135-8548, JapanScience and Engineering, Hosei University, Tokyo 184-8584, JapanWe investigate a circularly polarized (CP) transmission-line antenna composed of loop radiation elements, called a loop-line antenna. To enhance the CP wave bandwidth, an isolated loop radiation element is first analyzed using the method of moments. It is found that a CP wave bandwidth for a 3 dB axial-ratio criterion has a maximum value of 8%. On the basis of the analysis results, we design the loop-line antenna. It is found that the antenna shows a CP wave bandwidth of 6%, which is twice as wide as that of a conventional loop-line antenna. The analysis results are verified with experimental ones. In addition, a condition for wideband CP radiation is discussed and found to be a composite radiation element consisting of two CP loops.http://dx.doi.org/10.1155/2020/5216132 |
| spellingShingle | Kazuhide Hirose Motoshi Nakatsu Hisamatsu Nakano A Loop-Line Antenna with Enhanced Bandwidth of Circular Polarization International Journal of Antennas and Propagation |
| title | A Loop-Line Antenna with Enhanced Bandwidth of Circular Polarization |
| title_full | A Loop-Line Antenna with Enhanced Bandwidth of Circular Polarization |
| title_fullStr | A Loop-Line Antenna with Enhanced Bandwidth of Circular Polarization |
| title_full_unstemmed | A Loop-Line Antenna with Enhanced Bandwidth of Circular Polarization |
| title_short | A Loop-Line Antenna with Enhanced Bandwidth of Circular Polarization |
| title_sort | loop line antenna with enhanced bandwidth of circular polarization |
| url | http://dx.doi.org/10.1155/2020/5216132 |
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