A Novel Nonlinear LPDA Design for HF Direction Finding
A novel design of log-periodic dipole array (LPDA) for high-frequency direction finding (DF) is presented. The traditional Carrel method employs fixed values of scale factor and spacing factors in LPDA designs. Here, we propose a design method which uses the continuous change of both the scale facto...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2019/1371285 |
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| _version_ | 1832551392472989696 |
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| author | Xiaofei Ren Hu Li Shuxi Gong |
| author_facet | Xiaofei Ren Hu Li Shuxi Gong |
| author_sort | Xiaofei Ren |
| collection | DOAJ |
| description | A novel design of log-periodic dipole array (LPDA) for high-frequency direction finding (DF) is presented. The traditional Carrel method employs fixed values of scale factor and spacing factors in LPDA designs. Here, we propose a design method which uses the continuous change of both the scale factor and the spacing factor so that the length of the dipoles and the space between dipoles vary nonlinearly. One advantage of our design is that the effective distance between the phase center position and the feed point of LPDA can be increased. So the effective radius of the circularly disposed antenna array (CDAA) composed of LPDA is extended, which is important for improving the accuracy of the DF system. Both the simulation and measurement results show that the proposed LPDA achieves larger effective distance and higher gain compared to that using the traditional Carrel method. The proposed LPDA also shows characteristics of wideband impedance matching. The antenna has been successfully applied to practical HF direction finding system. |
| format | Article |
| id | doaj-art-4bac6835da394710b3f31b43d20691bb |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-4bac6835da394710b3f31b43d20691bb2025-02-03T06:01:34ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772019-01-01201910.1155/2019/13712851371285A Novel Nonlinear LPDA Design for HF Direction FindingXiaofei Ren0Hu Li1Shuxi Gong2National Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an, Shaanxi 710071, ChinaChina Research Institute of Radiowave Propagation, Qingdao, Shandong 266107, ChinaNational Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an, Shaanxi 710071, ChinaA novel design of log-periodic dipole array (LPDA) for high-frequency direction finding (DF) is presented. The traditional Carrel method employs fixed values of scale factor and spacing factors in LPDA designs. Here, we propose a design method which uses the continuous change of both the scale factor and the spacing factor so that the length of the dipoles and the space between dipoles vary nonlinearly. One advantage of our design is that the effective distance between the phase center position and the feed point of LPDA can be increased. So the effective radius of the circularly disposed antenna array (CDAA) composed of LPDA is extended, which is important for improving the accuracy of the DF system. Both the simulation and measurement results show that the proposed LPDA achieves larger effective distance and higher gain compared to that using the traditional Carrel method. The proposed LPDA also shows characteristics of wideband impedance matching. The antenna has been successfully applied to practical HF direction finding system.http://dx.doi.org/10.1155/2019/1371285 |
| spellingShingle | Xiaofei Ren Hu Li Shuxi Gong A Novel Nonlinear LPDA Design for HF Direction Finding International Journal of Antennas and Propagation |
| title | A Novel Nonlinear LPDA Design for HF Direction Finding |
| title_full | A Novel Nonlinear LPDA Design for HF Direction Finding |
| title_fullStr | A Novel Nonlinear LPDA Design for HF Direction Finding |
| title_full_unstemmed | A Novel Nonlinear LPDA Design for HF Direction Finding |
| title_short | A Novel Nonlinear LPDA Design for HF Direction Finding |
| title_sort | novel nonlinear lpda design for hf direction finding |
| url | http://dx.doi.org/10.1155/2019/1371285 |
| work_keys_str_mv | AT xiaofeiren anovelnonlinearlpdadesignforhfdirectionfinding AT huli anovelnonlinearlpdadesignforhfdirectionfinding AT shuxigong anovelnonlinearlpdadesignforhfdirectionfinding AT xiaofeiren novelnonlinearlpdadesignforhfdirectionfinding AT huli novelnonlinearlpdadesignforhfdirectionfinding AT shuxigong novelnonlinearlpdadesignforhfdirectionfinding |