Enhancing 2-D Beam Scanning Capability through Extended Transmission Paths in a Liquid Crystal-Based Transmitarray Antenna for mmWave Communications
This paper introduces a novel method for implementing a liquid crystal-based transmitarray (LCTA) antenna with two-dimensional (2D) beam scanning capability for the first time. Extending the phase tuning range of LCTA unit cells faces a crucial limitation in maintaining a thin single liquid crystal...
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| Format: | Article |
| Language: | English |
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The Korean Institute of Electromagnetic Engineering and Science
2025-01-01
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| Series: | Journal of Electromagnetic Engineering and Science |
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| Online Access: | https://www.jees.kr/upload/pdf/jees-2025-1-r-281.pdf |
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| author | Seungwoo Bang Hogyeom Kim Jungsuek Oh |
| author_facet | Seungwoo Bang Hogyeom Kim Jungsuek Oh |
| author_sort | Seungwoo Bang |
| collection | DOAJ |
| description | This paper introduces a novel method for implementing a liquid crystal-based transmitarray (LCTA) antenna with two-dimensional (2D) beam scanning capability for the first time. Extending the phase tuning range of LCTA unit cells faces a crucial limitation in maintaining a thin single liquid crystal (LC) layer because the tuning range is significantly dependent on the LC thickness. The proposed transmission line-based unit cell design could overcome this limitation due to its horizontal propagation characteristic among the LC layers. Therefore, the proposed LCTA unit cell achieves a phase tuning range of 130° while maintaining the thickness of the LC under 0.25 mm at 28 GHz. Furthermore, a 10 × 10 array design is fabricated and measured to verify its 2D beam scanning capability. Consequently, the maximum scanning angle of 30° is obtained in the E-plane and H-plane from measurements. Comparative results with previous studies also emphasize the advantages of the proposed design. |
| format | Article |
| id | doaj-art-d0ce9c91a2484935865497d208f2aeb2 |
| institution | DOAJ |
| issn | 2671-7255 2671-7263 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | The Korean Institute of Electromagnetic Engineering and Science |
| record_format | Article |
| series | Journal of Electromagnetic Engineering and Science |
| spelling | doaj-art-d0ce9c91a2484935865497d208f2aeb22025-08-20T02:43:17ZengThe Korean Institute of Electromagnetic Engineering and ScienceJournal of Electromagnetic Engineering and Science2671-72552671-72632025-01-01251859110.26866/jees.2025.1.r.2813726Enhancing 2-D Beam Scanning Capability through Extended Transmission Paths in a Liquid Crystal-Based Transmitarray Antenna for mmWave CommunicationsSeungwoo BangHogyeom KimJungsuek OhThis paper introduces a novel method for implementing a liquid crystal-based transmitarray (LCTA) antenna with two-dimensional (2D) beam scanning capability for the first time. Extending the phase tuning range of LCTA unit cells faces a crucial limitation in maintaining a thin single liquid crystal (LC) layer because the tuning range is significantly dependent on the LC thickness. The proposed transmission line-based unit cell design could overcome this limitation due to its horizontal propagation characteristic among the LC layers. Therefore, the proposed LCTA unit cell achieves a phase tuning range of 130° while maintaining the thickness of the LC under 0.25 mm at 28 GHz. Furthermore, a 10 × 10 array design is fabricated and measured to verify its 2D beam scanning capability. Consequently, the maximum scanning angle of 30° is obtained in the E-plane and H-plane from measurements. Comparative results with previous studies also emphasize the advantages of the proposed design.https://www.jees.kr/upload/pdf/jees-2025-1-r-281.pdfliquid crystalmetasurfacemmwave communicationtransmitarray |
| spellingShingle | Seungwoo Bang Hogyeom Kim Jungsuek Oh Enhancing 2-D Beam Scanning Capability through Extended Transmission Paths in a Liquid Crystal-Based Transmitarray Antenna for mmWave Communications Journal of Electromagnetic Engineering and Science liquid crystal metasurface mmwave communication transmitarray |
| title | Enhancing 2-D Beam Scanning Capability through Extended Transmission Paths in a Liquid Crystal-Based Transmitarray Antenna for mmWave Communications |
| title_full | Enhancing 2-D Beam Scanning Capability through Extended Transmission Paths in a Liquid Crystal-Based Transmitarray Antenna for mmWave Communications |
| title_fullStr | Enhancing 2-D Beam Scanning Capability through Extended Transmission Paths in a Liquid Crystal-Based Transmitarray Antenna for mmWave Communications |
| title_full_unstemmed | Enhancing 2-D Beam Scanning Capability through Extended Transmission Paths in a Liquid Crystal-Based Transmitarray Antenna for mmWave Communications |
| title_short | Enhancing 2-D Beam Scanning Capability through Extended Transmission Paths in a Liquid Crystal-Based Transmitarray Antenna for mmWave Communications |
| title_sort | enhancing 2 d beam scanning capability through extended transmission paths in a liquid crystal based transmitarray antenna for mmwave communications |
| topic | liquid crystal metasurface mmwave communication transmitarray |
| url | https://www.jees.kr/upload/pdf/jees-2025-1-r-281.pdf |
| work_keys_str_mv | AT seungwoobang enhancing2dbeamscanningcapabilitythroughextendedtransmissionpathsinaliquidcrystalbasedtransmitarrayantennaformmwavecommunications AT hogyeomkim enhancing2dbeamscanningcapabilitythroughextendedtransmissionpathsinaliquidcrystalbasedtransmitarrayantennaformmwavecommunications AT jungsuekoh enhancing2dbeamscanningcapabilitythroughextendedtransmissionpathsinaliquidcrystalbasedtransmitarrayantennaformmwavecommunications |