High efficiency wideband printed monopole antenna with enhanced gain using artificial magnetic conductor surface
Abstract Combining the benefits of a low profile, high gain, high efficiency, and wideband operation in a planar antenna presents a significant challenge for antenna designers. Low-profile wideband antennas often suffer from low gain. This study introduces a compact wideband artificial magnetic cond...
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Nature Portfolio
2025-05-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-99233-z |
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| author | A. E. Farahat May AboEl-Hassan K. F. A. Hussein |
| author_facet | A. E. Farahat May AboEl-Hassan K. F. A. Hussein |
| author_sort | A. E. Farahat |
| collection | DOAJ |
| description | Abstract Combining the benefits of a low profile, high gain, high efficiency, and wideband operation in a planar antenna presents a significant challenge for antenna designers. Low-profile wideband antennas often suffer from low gain. This study introduces a compact wideband artificial magnetic conducting surface (AMCS) positioned behind a wideband omnidirectional antenna to enhance its gain across the operational frequency range. This integration allows the radiating structure to achieve both high gain and wideband functionality in a single design. In this research, a wideband planar monopole printed antenna is developed to function as an omnidirectional radiator, delivering excellent impedance matching and radiation efficiency across the frequency range of 3.9–7.2 GHz (60% bandwidth) in free space. The free-standing antenna dimensions are 30 mm × 20 mm (0.39 λo × 0.3 λo), where λo corresponds to the lowest operating frequency of the antenna). It exhibits a gain ranging from 2 dBi to 4.5 dBi over this frequency band. To improve gain, a wideband AMCS is designed, consisting of just 3 × 3 unit cells with overall dimensions of 9 × 9 cm (1.1 λo × 1.1 λo). The AMCS is placed parallel to the planar antenna at a distance of 1.75 cm behind it. The gain of the AMCS-backed antenna reaches up to 9 dBi without compromising bandwidth or impedance matching. Furthermore, the radiation efficiency remains above 98% across the operational band of 3.6–7.2 GHz (66% bandwidth). The wideband antenna and AMCS are fabricated to experimentally validate the performance of the AMCS-based antenna. Measurements of impedance matching, gain, and radiation efficiency demonstrate close alignment with simulation results, confirming the effectiveness of the proposed design. |
| format | Article |
| id | doaj-art-e7c613c4c0c345a68d5f70aaff7dcf82 |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-e7c613c4c0c345a68d5f70aaff7dcf822025-08-20T03:10:13ZengNature PortfolioScientific Reports2045-23222025-05-0115112310.1038/s41598-025-99233-zHigh efficiency wideband printed monopole antenna with enhanced gain using artificial magnetic conductor surfaceA. E. Farahat0May AboEl-Hassan1K. F. A. Hussein2Electronics Research Institute (ERI)Electronics Research Institute (ERI)Electronics Research Institute (ERI)Abstract Combining the benefits of a low profile, high gain, high efficiency, and wideband operation in a planar antenna presents a significant challenge for antenna designers. Low-profile wideband antennas often suffer from low gain. This study introduces a compact wideband artificial magnetic conducting surface (AMCS) positioned behind a wideband omnidirectional antenna to enhance its gain across the operational frequency range. This integration allows the radiating structure to achieve both high gain and wideband functionality in a single design. In this research, a wideband planar monopole printed antenna is developed to function as an omnidirectional radiator, delivering excellent impedance matching and radiation efficiency across the frequency range of 3.9–7.2 GHz (60% bandwidth) in free space. The free-standing antenna dimensions are 30 mm × 20 mm (0.39 λo × 0.3 λo), where λo corresponds to the lowest operating frequency of the antenna). It exhibits a gain ranging from 2 dBi to 4.5 dBi over this frequency band. To improve gain, a wideband AMCS is designed, consisting of just 3 × 3 unit cells with overall dimensions of 9 × 9 cm (1.1 λo × 1.1 λo). The AMCS is placed parallel to the planar antenna at a distance of 1.75 cm behind it. The gain of the AMCS-backed antenna reaches up to 9 dBi without compromising bandwidth or impedance matching. Furthermore, the radiation efficiency remains above 98% across the operational band of 3.6–7.2 GHz (66% bandwidth). The wideband antenna and AMCS are fabricated to experimentally validate the performance of the AMCS-based antenna. Measurements of impedance matching, gain, and radiation efficiency demonstrate close alignment with simulation results, confirming the effectiveness of the proposed design.https://doi.org/10.1038/s41598-025-99233-zArtificial magnetic conducting surfaceFrequency selective surfaceHigh-gain antennaPeriodic structure. |
| spellingShingle | A. E. Farahat May AboEl-Hassan K. F. A. Hussein High efficiency wideband printed monopole antenna with enhanced gain using artificial magnetic conductor surface Scientific Reports Artificial magnetic conducting surface Frequency selective surface High-gain antenna Periodic structure. |
| title | High efficiency wideband printed monopole antenna with enhanced gain using artificial magnetic conductor surface |
| title_full | High efficiency wideband printed monopole antenna with enhanced gain using artificial magnetic conductor surface |
| title_fullStr | High efficiency wideband printed monopole antenna with enhanced gain using artificial magnetic conductor surface |
| title_full_unstemmed | High efficiency wideband printed monopole antenna with enhanced gain using artificial magnetic conductor surface |
| title_short | High efficiency wideband printed monopole antenna with enhanced gain using artificial magnetic conductor surface |
| title_sort | high efficiency wideband printed monopole antenna with enhanced gain using artificial magnetic conductor surface |
| topic | Artificial magnetic conducting surface Frequency selective surface High-gain antenna Periodic structure. |
| url | https://doi.org/10.1038/s41598-025-99233-z |
| work_keys_str_mv | AT aefarahat highefficiencywidebandprintedmonopoleantennawithenhancedgainusingartificialmagneticconductorsurface AT mayaboelhassan highefficiencywidebandprintedmonopoleantennawithenhancedgainusingartificialmagneticconductorsurface AT kfahussein highefficiencywidebandprintedmonopoleantennawithenhancedgainusingartificialmagneticconductorsurface |