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| Content Provider | IET Digital Library |
|---|---|
| Author | Ray, Mrityunjoy Kumar Mandal, Kaushik |
| Abstract | A low-profile circularly polarised (CP) antenna with wide 3 dB axial ratio beamwidth (ARBW) is proposed in this study. The possibilities of widening the 3 dB ARBW of single diagonal slot-loaded conventional CP antenna have been explored successfully by incorporating a pair of rectangular slots along the diagonal line of a square patch antenna. The design parameters and the symmetrical arrangement of this pair of slots across the centre of the patch are crucial to adjust and achieve the wide 3 dB ARBW with high CP purity. Coupling between the two diagonal slots provides nearly equal E θ and E φ radiation patterns over a large angular range, and hence the 3 dB ARBW has been enhanced by 85.71 and 55.4% for φ = 0° and φ = 90° planes, respectively, in comparison to the conventional slot-loaded CP antenna. The minimum 3 dB ARBW of 208° and a maximum of 230° have been achieved across different planes of radiation φ = 0°, 45°, 90°, and 135° with a minimum axial ratio of 0.20 dB only. The absolute planar antenna of size (0.29 × 0.29 × 0.013)λ0 3, where λ0 is the free-space wavelength corresponding to the CP frequency, has been fabricated and tested. The measured and simulated results show fair consistency to each other. |
| Starting Page | 2433 |
| Ending Page | 2438 |
| Page Count | 6 |
| ISSN | 17518725 |
| Volume Number | 13 |
| e-ISSN | 17518733 |
| Issue Number | Issue 14, Nov (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/13/14 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2019.0392 |
| Journal | IET Microwaves, Antennas & Propagation |
| Publisher Date | 2019-07-11 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Absolute Planar Antenna Antenna Accessory Antenna Feeds Antenna Radiation Pattern Broadband Antenna Conventional Slot-loaded CP Antenna Diagonal Line Diagonal Slots Electromagnetic Wave Polarisation High CP Purity Low-profile Circularly Polarised Antenna Low-profile Circularly Polarised Patch Antenna Microstrip Antenna Microwave Antenna Minimum 3 DB ARBW Minimum Axial Ratio Planar Antenna Polarisation Rectangular Slot Single Antenna Single Diagonal Slot-loaded Conventional CP Antenna Slot Antenna Square Patch Antenna UHF Antenna Wide Axial Ratio Beamwidth |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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