A novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth
Abstract In this study, a novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth is designed. The circular polariser is excited by the waveguide radiation linear polarised antenna, whose end is bent by 90° and generates a circularly polarised electric fie...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-05-01
|
| Series: | IET Microwaves, Antennas & Propagation |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/mia2.12249 |
| _version_ | 1817991288143740928 |
|---|---|
| author | Hai Wang Xue Lei Tiandong Duan Tianpeng Li Ming‐yang Zhao Jun Gao Xinren Wang |
| author_facet | Hai Wang Xue Lei Tiandong Duan Tianpeng Li Ming‐yang Zhao Jun Gao Xinren Wang |
| author_sort | Hai Wang |
| collection | DOAJ |
| description | Abstract In this study, a novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth is designed. The circular polariser is excited by the waveguide radiation linear polarised antenna, whose end is bent by 90° and generates a circularly polarised electric field. The matching waveguide between the slot and the polariser improves impedance matching. Furthermore, the structure with the added waveguide changes waveguide impedance, which can be used to realise impedance matching, and reduces the spacing between the units. In this study, a 4 × 4 antenna array is fabricated. The measured results reveal that the array achieves −10 dB impedance bandwidth of 27% (11.15–14.63 GHz) and the 3 dB axial ratio bandwidth of 23% (11.48–14.52 GHz). An aperture efficiency higher than 71% is obtained, with the maximum gain of 22 dB. The antenna side lobes levels are less than −13 dB in the operating bandwidth. |
| first_indexed | 2024-04-14T01:11:12Z |
| format | Article |
| id | doaj.art-813f467b97c84f0f8a934be254578b69 |
| institution | Directory Open Access Journal |
| issn | 1751-8725 1751-8733 |
| language | English |
| last_indexed | 2024-04-14T01:11:12Z |
| publishDate | 2022-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Microwaves, Antennas & Propagation |
| spelling | doaj.art-813f467b97c84f0f8a934be254578b692022-12-22T02:21:03ZengWileyIET Microwaves, Antennas & Propagation1751-87251751-87332022-05-0116635936610.1049/mia2.12249A novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidthHai Wang0Xue Lei1Tiandong Duan2Tianpeng Li3Ming‐yang Zhao4Jun Gao5Xinren Wang6Information Engineering University Zhengzhou ChinaInformation Engineering University Zhengzhou ChinaInformation Engineering University Zhengzhou ChinaInformation Engineering University Zhengzhou ChinaState Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System Luoyang ChinaInformation Engineering University Zhengzhou ChinaAcademy of Military Science of the People's Liberation Army Beijing ChinaAbstract In this study, a novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth is designed. The circular polariser is excited by the waveguide radiation linear polarised antenna, whose end is bent by 90° and generates a circularly polarised electric field. The matching waveguide between the slot and the polariser improves impedance matching. Furthermore, the structure with the added waveguide changes waveguide impedance, which can be used to realise impedance matching, and reduces the spacing between the units. In this study, a 4 × 4 antenna array is fabricated. The measured results reveal that the array achieves −10 dB impedance bandwidth of 27% (11.15–14.63 GHz) and the 3 dB axial ratio bandwidth of 23% (11.48–14.52 GHz). An aperture efficiency higher than 71% is obtained, with the maximum gain of 22 dB. The antenna side lobes levels are less than −13 dB in the operating bandwidth.https://doi.org/10.1049/mia2.12249array antennaaxial ratiobentimpedance bandwidth |
| spellingShingle | Hai Wang Xue Lei Tiandong Duan Tianpeng Li Ming‐yang Zhao Jun Gao Xinren Wang A novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth IET Microwaves, Antennas & Propagation array antenna axial ratio bent impedance bandwidth |
| title | A novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth |
| title_full | A novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth |
| title_fullStr | A novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth |
| title_full_unstemmed | A novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth |
| title_short | A novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth |
| title_sort | novel broadband circularly polarised waveguide slot array antenna with a wide axial ratio bandwidth |
| topic | array antenna axial ratio bent impedance bandwidth |
| url | https://doi.org/10.1049/mia2.12249 |
| work_keys_str_mv | AT haiwang anovelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT xuelei anovelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT tiandongduan anovelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT tianpengli anovelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT mingyangzhao anovelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT jungao anovelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT xinrenwang anovelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT haiwang novelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT xuelei novelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT tiandongduan novelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT tianpengli novelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT mingyangzhao novelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT jungao novelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth AT xinrenwang novelbroadbandcircularlypolarisedwaveguideslotarrayantennawithawideaxialratiobandwidth |