EBG-backed ultrawideband circularly polarized Archimedean spiral antenna scheme for IoT applications
Abstract This research proposes a low-profile ultrawideband circularly polarized Archimedean spiral antenna with an electromagnetic band gap (EBG)-backed structure. The proposed antenna scheme consists of an upper-layer spiral radiator, a microstrip tapered balun, and a lower-layer high-impedance ci...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-04-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-96381-0 |
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| author | Bancha Luadang Chalanthon Ainthachot Pisit Janpangngern Khanet Pookkapund Danai Torrungrueng Monai Krairiksh Chuwong Phongcharoenpanich |
| author_facet | Bancha Luadang Chalanthon Ainthachot Pisit Janpangngern Khanet Pookkapund Danai Torrungrueng Monai Krairiksh Chuwong Phongcharoenpanich |
| author_sort | Bancha Luadang |
| collection | DOAJ |
| description | Abstract This research proposes a low-profile ultrawideband circularly polarized Archimedean spiral antenna with an electromagnetic band gap (EBG)-backed structure. The proposed antenna scheme consists of an upper-layer spiral radiator, a microstrip tapered balun, and a lower-layer high-impedance circular EBG reflector of three concentric rings of trapezoid-shaped unit cells. The antenna scheme can achieve a significant profile reduction, with a total height of 0.1 wavelengths at the lowest operational frequency. The integration of the EBG reflector improves the radiation characteristics and antenna gain, achieving a maximum gain of 9.87 dBic at 6.90 GHz. The EBG reflector also improves impedance matching and axial ratio (AR) over the 1.5–8.75 GHz frequency range, achieving a wide AR bandwidth of 141.46%. The novelty of this work lies in the integration of Archimedean spiral antenna with high-impedance EBG reflector of trapezoid-shaped unit cells to enhance the impedance and AR bandwidths without increasing the overall antenna profile. Essentially, the proposed antenna scheme is suitable for broadband communication systems that require ultrawide bandwidth, circular polarization, and a small form factor. |
| format | Article |
| id | doaj-art-06551b91dc4847ae9b30d9e7d88202e6 |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-06551b91dc4847ae9b30d9e7d88202e62025-08-20T03:04:50ZengNature PortfolioScientific Reports2045-23222025-04-0115112410.1038/s41598-025-96381-0EBG-backed ultrawideband circularly polarized Archimedean spiral antenna scheme for IoT applicationsBancha Luadang0Chalanthon Ainthachot1Pisit Janpangngern2Khanet Pookkapund3Danai Torrungrueng4Monai Krairiksh5Chuwong Phongcharoenpanich6Faculty of Engineering, Rajamangala University of Technology RattanakosinSchool of Engineering, King Mongkut’s Institute of Technology LadkrabangSchool of Electronic Engineering, Institute of Engineering, Suranaree University of TechnologyFaculty of Science and Technology, Phranakhon Si Ayutthaya Rajabhat UniversityResearch Center of Innovation Digital and Electromagnetic Technology, Department of Teacher Training in Electrical Engineering, Faculty of Technical Education, King Mongkut’s University of Technology North BangkokSchool of Engineering, King Mongkut’s Institute of Technology LadkrabangSchool of Engineering, King Mongkut’s Institute of Technology LadkrabangAbstract This research proposes a low-profile ultrawideband circularly polarized Archimedean spiral antenna with an electromagnetic band gap (EBG)-backed structure. The proposed antenna scheme consists of an upper-layer spiral radiator, a microstrip tapered balun, and a lower-layer high-impedance circular EBG reflector of three concentric rings of trapezoid-shaped unit cells. The antenna scheme can achieve a significant profile reduction, with a total height of 0.1 wavelengths at the lowest operational frequency. The integration of the EBG reflector improves the radiation characteristics and antenna gain, achieving a maximum gain of 9.87 dBic at 6.90 GHz. The EBG reflector also improves impedance matching and axial ratio (AR) over the 1.5–8.75 GHz frequency range, achieving a wide AR bandwidth of 141.46%. The novelty of this work lies in the integration of Archimedean spiral antenna with high-impedance EBG reflector of trapezoid-shaped unit cells to enhance the impedance and AR bandwidths without increasing the overall antenna profile. Essentially, the proposed antenna scheme is suitable for broadband communication systems that require ultrawide bandwidth, circular polarization, and a small form factor.https://doi.org/10.1038/s41598-025-96381-0Archimedean spiral antennaCircularly polarized (CP)Electromagnetic band gap (EBG)High impedance surface (HIS)Ultrawideband (UWB) antenna |
| spellingShingle | Bancha Luadang Chalanthon Ainthachot Pisit Janpangngern Khanet Pookkapund Danai Torrungrueng Monai Krairiksh Chuwong Phongcharoenpanich EBG-backed ultrawideband circularly polarized Archimedean spiral antenna scheme for IoT applications Scientific Reports Archimedean spiral antenna Circularly polarized (CP) Electromagnetic band gap (EBG) High impedance surface (HIS) Ultrawideband (UWB) antenna |
| title | EBG-backed ultrawideband circularly polarized Archimedean spiral antenna scheme for IoT applications |
| title_full | EBG-backed ultrawideband circularly polarized Archimedean spiral antenna scheme for IoT applications |
| title_fullStr | EBG-backed ultrawideband circularly polarized Archimedean spiral antenna scheme for IoT applications |
| title_full_unstemmed | EBG-backed ultrawideband circularly polarized Archimedean spiral antenna scheme for IoT applications |
| title_short | EBG-backed ultrawideband circularly polarized Archimedean spiral antenna scheme for IoT applications |
| title_sort | ebg backed ultrawideband circularly polarized archimedean spiral antenna scheme for iot applications |
| topic | Archimedean spiral antenna Circularly polarized (CP) Electromagnetic band gap (EBG) High impedance surface (HIS) Ultrawideband (UWB) antenna |
| url | https://doi.org/10.1038/s41598-025-96381-0 |
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