A Single-Layer Multimode Metasurface Antenna with a CPW-Fed Aperture for UWB Communication Applications
A single-layer multimode metasurface antenna is proposed with a coplanar waveguide (CPW)-fed aperture. The ultra-wideband (UWB) performance is implemented based on a three-step evolution process with the aid of characteristic mode analysis (CMA). Considering the efficient excitation with a fixed fee...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/2/249 |
| _version_ | 1797619235616194560 |
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| author | Shu Jiang Zhiqiang Liu Huijun Yang Dongquan Sun |
| author_facet | Shu Jiang Zhiqiang Liu Huijun Yang Dongquan Sun |
| author_sort | Shu Jiang |
| collection | DOAJ |
| description | A single-layer multimode metasurface antenna is proposed with a coplanar waveguide (CPW)-fed aperture. The ultra-wideband (UWB) performance is implemented based on a three-step evolution process with the aid of characteristic mode analysis (CMA). Considering the efficient excitation with a fixed feeding structure, the metasurface modal current variation at different frequencies is analyzed and optimized, in addition to that at the resonant frequency. Correspondingly, the metasurface is firstly designed utilizing an array of 4 × 4 patches. Then, the 1 × 3 and the 1 × 1 parasitic patch arrays are located near the edge patches. Finally, every patch is split into two by a center slot along the current distribution of the required polarization. Four resonant modes of the metasurface become more desirable step by step and can be efficiently excited over the entire band. To enhance the impedance matching level, a pair of 5-stage gradient transitions are added to the CPW-fed slot. The slot mode combined with the four modes further improves the bandwidth. The experimental results demonstrate that the proposed antenna exhibits a 3 dB gain bandwidth of over 74% (4.0–8.7 GHz) with a peak gain of 8.2 dBi. The overall dimensions of the prototype are 1.40<i>λ</i><sub>0</sub> × 1.40<i>λ</i><sub>0</sub> × 0.075<i>λ</i><sub>0</sub> (<i>λ</i><sub>0</sub> is the free-space wavelength at 6 GHz). |
| first_indexed | 2024-03-11T08:25:10Z |
| format | Article |
| id | doaj.art-6a222f32041d4434b2c140b83d4b8078 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-11T08:25:10Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-6a222f32041d4434b2c140b83d4b80782023-11-16T22:09:35ZengMDPI AGMicromachines2072-666X2023-01-0114224910.3390/mi14020249A Single-Layer Multimode Metasurface Antenna with a CPW-Fed Aperture for UWB Communication ApplicationsShu Jiang0Zhiqiang Liu1Huijun Yang2Dongquan Sun3School of Information and Communication Engineering, Nanjing Institute of Technology, Nanjing 211167, ChinaPurple Mountain Laboratories, Nanjing 211111, ChinaSchool of Information and Communication Engineering, Nanjing Institute of Technology, Nanjing 211167, ChinaSchool of Physics, Xidian University, Xi’an 710071, ChinaA single-layer multimode metasurface antenna is proposed with a coplanar waveguide (CPW)-fed aperture. The ultra-wideband (UWB) performance is implemented based on a three-step evolution process with the aid of characteristic mode analysis (CMA). Considering the efficient excitation with a fixed feeding structure, the metasurface modal current variation at different frequencies is analyzed and optimized, in addition to that at the resonant frequency. Correspondingly, the metasurface is firstly designed utilizing an array of 4 × 4 patches. Then, the 1 × 3 and the 1 × 1 parasitic patch arrays are located near the edge patches. Finally, every patch is split into two by a center slot along the current distribution of the required polarization. Four resonant modes of the metasurface become more desirable step by step and can be efficiently excited over the entire band. To enhance the impedance matching level, a pair of 5-stage gradient transitions are added to the CPW-fed slot. The slot mode combined with the four modes further improves the bandwidth. The experimental results demonstrate that the proposed antenna exhibits a 3 dB gain bandwidth of over 74% (4.0–8.7 GHz) with a peak gain of 8.2 dBi. The overall dimensions of the prototype are 1.40<i>λ</i><sub>0</sub> × 1.40<i>λ</i><sub>0</sub> × 0.075<i>λ</i><sub>0</sub> (<i>λ</i><sub>0</sub> is the free-space wavelength at 6 GHz).https://www.mdpi.com/2072-666X/14/2/249characteristic mode analysis (CMA)coplanar waveguide (CPW)metasurface antennaultra-wideband (UWB) |
| spellingShingle | Shu Jiang Zhiqiang Liu Huijun Yang Dongquan Sun A Single-Layer Multimode Metasurface Antenna with a CPW-Fed Aperture for UWB Communication Applications Micromachines characteristic mode analysis (CMA) coplanar waveguide (CPW) metasurface antenna ultra-wideband (UWB) |
| title | A Single-Layer Multimode Metasurface Antenna with a CPW-Fed Aperture for UWB Communication Applications |
| title_full | A Single-Layer Multimode Metasurface Antenna with a CPW-Fed Aperture for UWB Communication Applications |
| title_fullStr | A Single-Layer Multimode Metasurface Antenna with a CPW-Fed Aperture for UWB Communication Applications |
| title_full_unstemmed | A Single-Layer Multimode Metasurface Antenna with a CPW-Fed Aperture for UWB Communication Applications |
| title_short | A Single-Layer Multimode Metasurface Antenna with a CPW-Fed Aperture for UWB Communication Applications |
| title_sort | single layer multimode metasurface antenna with a cpw fed aperture for uwb communication applications |
| topic | characteristic mode analysis (CMA) coplanar waveguide (CPW) metasurface antenna ultra-wideband (UWB) |
| url | https://www.mdpi.com/2072-666X/14/2/249 |
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