A loop antenna with quasi‐two sources for circular polarisation
Abstract A novel method of exciting a circularly polarised (CP) loop antenna is proposed using the moment method. A horizontal square loop above the ground plane has two corners connected to a vertical, branched feedline with one source. First, the authors show the radiation characteristics of a ref...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-03-01
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| Series: | Electronics Letters |
| Online Access: | https://doi.org/10.1049/ell2.12419 |
| _version_ | 1811183583545524224 |
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| author | K. Hirose S. Tsubouchi H. Nakano |
| author_facet | K. Hirose S. Tsubouchi H. Nakano |
| author_sort | K. Hirose |
| collection | DOAJ |
| description | Abstract A novel method of exciting a circularly polarised (CP) loop antenna is proposed using the moment method. A horizontal square loop above the ground plane has two corners connected to a vertical, branched feedline with one source. First, the authors show the radiation characteristics of a reference antenna whose corners are excited with two sources having the same amplitudes and a phase difference of 90°. Next, we excite the loop corners with one source using the branched feedline. It is found that when the branch location along the feedline is selected, the antenna radiates a CP wave. The frequency responses of the antenna show that the 3 dB axial‐ratio bandwidth is 12%, where the gain is more than 7.3 dBi. The simulated results are verified with experimental ones. |
| first_indexed | 2024-04-11T09:49:15Z |
| format | Article |
| id | doaj.art-0be42abc21ee47f1abbfb431a0bfb6d7 |
| institution | Directory Open Access Journal |
| issn | 0013-5194 1350-911X |
| language | English |
| last_indexed | 2024-04-11T09:49:15Z |
| publishDate | 2022-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Electronics Letters |
| spelling | doaj.art-0be42abc21ee47f1abbfb431a0bfb6d72022-12-22T04:30:51ZengWileyElectronics Letters0013-51941350-911X2022-03-0158622222410.1049/ell2.12419A loop antenna with quasi‐two sources for circular polarisationK. Hirose0S. Tsubouchi1H. Nakano2College of Engineering Shibaura Institute of Technology Tokyo JapanCollege of Engineering Shibaura Institute of Technology Tokyo JapanScience and Engineering Hosei University Tokyo JapanAbstract A novel method of exciting a circularly polarised (CP) loop antenna is proposed using the moment method. A horizontal square loop above the ground plane has two corners connected to a vertical, branched feedline with one source. First, the authors show the radiation characteristics of a reference antenna whose corners are excited with two sources having the same amplitudes and a phase difference of 90°. Next, we excite the loop corners with one source using the branched feedline. It is found that when the branch location along the feedline is selected, the antenna radiates a CP wave. The frequency responses of the antenna show that the 3 dB axial‐ratio bandwidth is 12%, where the gain is more than 7.3 dBi. The simulated results are verified with experimental ones.https://doi.org/10.1049/ell2.12419 |
| spellingShingle | K. Hirose S. Tsubouchi H. Nakano A loop antenna with quasi‐two sources for circular polarisation Electronics Letters |
| title | A loop antenna with quasi‐two sources for circular polarisation |
| title_full | A loop antenna with quasi‐two sources for circular polarisation |
| title_fullStr | A loop antenna with quasi‐two sources for circular polarisation |
| title_full_unstemmed | A loop antenna with quasi‐two sources for circular polarisation |
| title_short | A loop antenna with quasi‐two sources for circular polarisation |
| title_sort | loop antenna with quasi two sources for circular polarisation |
| url | https://doi.org/10.1049/ell2.12419 |
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