A reconfigurable transmitarray unit cell employing liquid metal
Abstract In this paper, a reconfigurable transmitarray unit cell using liquid metal is presented. It consists of three conducting layers where the geometries of the resonators, on the different layers, differ and consist of an arrow shape together with rotated split rings. The arrow‐shaped conductin...
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| Format: | Article |
| Language: | English |
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Wiley
2024-12-01
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| Series: | IET Microwaves, Antennas & Propagation |
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| Online Access: | https://doi.org/10.1049/mia2.12518 |
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| author | Zhishu Qu Yihua Zhou James R. Kelly Zhengpeng Wang Kenneth Lee Ford Yue Gao |
| author_facet | Zhishu Qu Yihua Zhou James R. Kelly Zhengpeng Wang Kenneth Lee Ford Yue Gao |
| author_sort | Zhishu Qu |
| collection | DOAJ |
| description | Abstract In this paper, a reconfigurable transmitarray unit cell using liquid metal is presented. It consists of three conducting layers where the geometries of the resonators, on the different layers, differ and consist of an arrow shape together with rotated split rings. The arrow‐shaped conducting layer has the capability to convert the polarization of the incoming waves by 90°. The split ring resonators, on the upper and lower conducting layers, have the same dimensions but different orientations (horizontal and vertical polarization). Several fluidic channels are placed beneath/above the conducting layers. The transmission behaviour of the unit cell can be changed by altering the geometrical parameters which is achieved by injecting the liquid metal into the channels. More than 300° phase shift range with a maximum S21 of ∼ −1.5 dB at 3.3 GHz is obtained. It exhibits 3 dB of insertion loss over a bandwidth ranging from 3.2 to 3.43 GHz. It is the first time that a transmitarray unit cell, reconfigured employing liquid metal, provides a combination of low insertion loss and large phase shift range. The proposed prototype was fabricated and measured within an open‐ended waveguide and the measured results agree well with the simulations and verify the effectiveness of the design. The reconfigurable transmitarray unit cell can be used to design beam‐scanning arrays, as well as for applications in wireless communications. |
| format | Article |
| id | doaj-art-13a3dfd7496f4881986d53db6dc4152e |
| institution | OA Journals |
| issn | 1751-8725 1751-8733 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Microwaves, Antennas & Propagation |
| spelling | doaj-art-13a3dfd7496f4881986d53db6dc4152e2025-08-20T01:59:56ZengWileyIET Microwaves, Antennas & Propagation1751-87251751-87332024-12-01181298599110.1049/mia2.12518A reconfigurable transmitarray unit cell employing liquid metalZhishu Qu0Yihua Zhou1James R. Kelly2Zhengpeng Wang3Kenneth Lee Ford4Yue Gao5School of Computer Science Fudan University Shanghai ChinaElectronic Engineering and Computer Science Queen Mary University of London London UKElectronic Engineering and Computer Science Queen Mary University of London London UKElectromagnetic Laboratory School of Electronic and Information Engineering Beihang University (BUAA) Beijing ChinaDepartment of Electronic and Electrical Engineering The University of Sheffield Sheffield UKSchool of Computer Science Fudan University Shanghai ChinaAbstract In this paper, a reconfigurable transmitarray unit cell using liquid metal is presented. It consists of three conducting layers where the geometries of the resonators, on the different layers, differ and consist of an arrow shape together with rotated split rings. The arrow‐shaped conducting layer has the capability to convert the polarization of the incoming waves by 90°. The split ring resonators, on the upper and lower conducting layers, have the same dimensions but different orientations (horizontal and vertical polarization). Several fluidic channels are placed beneath/above the conducting layers. The transmission behaviour of the unit cell can be changed by altering the geometrical parameters which is achieved by injecting the liquid metal into the channels. More than 300° phase shift range with a maximum S21 of ∼ −1.5 dB at 3.3 GHz is obtained. It exhibits 3 dB of insertion loss over a bandwidth ranging from 3.2 to 3.43 GHz. It is the first time that a transmitarray unit cell, reconfigured employing liquid metal, provides a combination of low insertion loss and large phase shift range. The proposed prototype was fabricated and measured within an open‐ended waveguide and the measured results agree well with the simulations and verify the effectiveness of the design. The reconfigurable transmitarray unit cell can be used to design beam‐scanning arrays, as well as for applications in wireless communications.https://doi.org/10.1049/mia2.12518antenna arraysmetamaterial antennasmicrowave antenna arraysphase shifterstransmitting antennas |
| spellingShingle | Zhishu Qu Yihua Zhou James R. Kelly Zhengpeng Wang Kenneth Lee Ford Yue Gao A reconfigurable transmitarray unit cell employing liquid metal IET Microwaves, Antennas & Propagation antenna arrays metamaterial antennas microwave antenna arrays phase shifters transmitting antennas |
| title | A reconfigurable transmitarray unit cell employing liquid metal |
| title_full | A reconfigurable transmitarray unit cell employing liquid metal |
| title_fullStr | A reconfigurable transmitarray unit cell employing liquid metal |
| title_full_unstemmed | A reconfigurable transmitarray unit cell employing liquid metal |
| title_short | A reconfigurable transmitarray unit cell employing liquid metal |
| title_sort | reconfigurable transmitarray unit cell employing liquid metal |
| topic | antenna arrays metamaterial antennas microwave antenna arrays phase shifters transmitting antennas |
| url | https://doi.org/10.1049/mia2.12518 |
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