Single-Layer Differential-Fed Wideband Metasurface Antenna Using Characteristic Mode Analysis
A single-layer differential-fed (DF) wideband metasurface (MTS) antenna is proposed in this paper. As the prototype, a three-by-three MTS formed by identical rectangular patches is investigated at first. We observe that there are many unwanted higher-order modes (HOMs) resonating near the wanted fun...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2023/5184139 |
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| author | Chao Huang Chen-Jiang Guo Yi Yuan Xia Ma Jun Ding |
| author_facet | Chao Huang Chen-Jiang Guo Yi Yuan Xia Ma Jun Ding |
| author_sort | Chao Huang |
| collection | DOAJ |
| description | A single-layer differential-fed (DF) wideband metasurface (MTS) antenna is proposed in this paper. As the prototype, a three-by-three MTS formed by identical rectangular patches is investigated at first. We observe that there are many unwanted higher-order modes (HOMs) resonating near the wanted fundamental mode. Two probes with differential signals feed MTS on its centerline to suppress the majority of HOMs. The remaining HOM can be removed from the discussed frequency range by modifying the prototype MTS to a nonuniform structure. Then, the optimal feeding positions (FPs) are determined by a quantitative prediction of the impendence bandwidth (IBW) without any physical feeds involved. The processes of HOMs suppression and FPs determination are based on characteristic mode analysis with the virtual probes. Moreover, two interdigital capacitor plates are loaded on the probes to improve the impedance matching of the antenna. Finally, the proposed DF MTS antenna is fabricated and measured. The measured −10-dB IBW is 18.4% (4.93 to 5.93 GHz) with broadside radiation, stable high gains, and front-to-back ratios better than 21 dB. |
| format | Article |
| id | doaj-art-302a68d0bc8642f2b846c3038616bf72 |
| institution | Kabale University |
| issn | 1687-5877 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-302a68d0bc8642f2b846c3038616bf722025-02-03T07:26:21ZengWileyInternational Journal of Antennas and Propagation1687-58772023-01-01202310.1155/2023/5184139Single-Layer Differential-Fed Wideband Metasurface Antenna Using Characteristic Mode AnalysisChao Huang0Chen-Jiang Guo1Yi Yuan2Xia Ma3Jun Ding4School of Electronics and InformationSchool of Electronics and InformationSchool of Electronics and InformationSchool of Electronics and InformationSchool of Electronics and InformationA single-layer differential-fed (DF) wideband metasurface (MTS) antenna is proposed in this paper. As the prototype, a three-by-three MTS formed by identical rectangular patches is investigated at first. We observe that there are many unwanted higher-order modes (HOMs) resonating near the wanted fundamental mode. Two probes with differential signals feed MTS on its centerline to suppress the majority of HOMs. The remaining HOM can be removed from the discussed frequency range by modifying the prototype MTS to a nonuniform structure. Then, the optimal feeding positions (FPs) are determined by a quantitative prediction of the impendence bandwidth (IBW) without any physical feeds involved. The processes of HOMs suppression and FPs determination are based on characteristic mode analysis with the virtual probes. Moreover, two interdigital capacitor plates are loaded on the probes to improve the impedance matching of the antenna. Finally, the proposed DF MTS antenna is fabricated and measured. The measured −10-dB IBW is 18.4% (4.93 to 5.93 GHz) with broadside radiation, stable high gains, and front-to-back ratios better than 21 dB.http://dx.doi.org/10.1155/2023/5184139 |
| spellingShingle | Chao Huang Chen-Jiang Guo Yi Yuan Xia Ma Jun Ding Single-Layer Differential-Fed Wideband Metasurface Antenna Using Characteristic Mode Analysis International Journal of Antennas and Propagation |
| title | Single-Layer Differential-Fed Wideband Metasurface Antenna Using Characteristic Mode Analysis |
| title_full | Single-Layer Differential-Fed Wideband Metasurface Antenna Using Characteristic Mode Analysis |
| title_fullStr | Single-Layer Differential-Fed Wideband Metasurface Antenna Using Characteristic Mode Analysis |
| title_full_unstemmed | Single-Layer Differential-Fed Wideband Metasurface Antenna Using Characteristic Mode Analysis |
| title_short | Single-Layer Differential-Fed Wideband Metasurface Antenna Using Characteristic Mode Analysis |
| title_sort | single layer differential fed wideband metasurface antenna using characteristic mode analysis |
| url | http://dx.doi.org/10.1155/2023/5184139 |
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