Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology
In this paper, a new approach is proposed to improve the radiation efficiency of a frequency beam-scanning antenna. In this proposed approach, the entire antenna is divided into two subarrays and each subarray includes one primary slow-wave line. Parameters of these two primary slow-wave lines are i...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9116971/ |
| _version_ | 1818857117950410752 |
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| author | Hui Chu Xiao-Hua Zhu Hong Hong Yong-Xin Guo |
| author_facet | Hui Chu Xiao-Hua Zhu Hong Hong Yong-Xin Guo |
| author_sort | Hui Chu |
| collection | DOAJ |
| description | In this paper, a new approach is proposed to improve the radiation efficiency of a frequency beam-scanning antenna. In this proposed approach, the entire antenna is divided into two subarrays and each subarray includes one primary slow-wave line. Parameters of these two primary slow-wave lines are identical to each other, to achieve identical progressive phase difference between elements within either subarray. Meanwhile, a secondary slow-wave line is designed and connected to the beginning of one of the two primary slow-wave lines, to introduce an additional phase difference between these two subarrays. The above setup provides more flexibility for the allocation of phase-delay units and thus enables a possibility to reduce the overall length and transmission loss of the slow-wave line utilized in a frequency beam-scanning array, which leads to a better radiation efficiency. In order to demonstrate the above topology, a novel microstrip-to-stripline power-divider and a novel broadband magneto-electric dipole element are proposed in multilayer configurations, for the realization of a 20-element prototype centered at 8.75 GHz. A reduction of 29.2% is achieved for the overall loss compared to a conventional array when achieving a scanning range of ±30°. |
| first_indexed | 2024-12-19T08:35:18Z |
| format | Article |
| id | doaj.art-4a0acf56ab804a9a8bd8c5f7604d73c7 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T08:35:18Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-4a0acf56ab804a9a8bd8c5f7604d73c72022-12-21T20:29:03ZengIEEEIEEE Access2169-35362020-01-01810942910943910.1109/ACCESS.2020.30022249116971Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray TopologyHui Chu0https://orcid.org/0000-0001-6895-4298Xiao-Hua Zhu1Hong Hong2https://orcid.org/0000-0002-1528-8479Yong-Xin Guo3School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaDepartment of Electrical and Computer Engineering, National University of Singapore, SingaporeIn this paper, a new approach is proposed to improve the radiation efficiency of a frequency beam-scanning antenna. In this proposed approach, the entire antenna is divided into two subarrays and each subarray includes one primary slow-wave line. Parameters of these two primary slow-wave lines are identical to each other, to achieve identical progressive phase difference between elements within either subarray. Meanwhile, a secondary slow-wave line is designed and connected to the beginning of one of the two primary slow-wave lines, to introduce an additional phase difference between these two subarrays. The above setup provides more flexibility for the allocation of phase-delay units and thus enables a possibility to reduce the overall length and transmission loss of the slow-wave line utilized in a frequency beam-scanning array, which leads to a better radiation efficiency. In order to demonstrate the above topology, a novel microstrip-to-stripline power-divider and a novel broadband magneto-electric dipole element are proposed in multilayer configurations, for the realization of a 20-element prototype centered at 8.75 GHz. A reduction of 29.2% is achieved for the overall loss compared to a conventional array when achieving a scanning range of ±30°.https://ieeexplore.ieee.org/document/9116971/Frequency beam-scanningsubarray topologyradiation efficiencymicrostrip-to-striplinemagneto-electric-dipole |
| spellingShingle | Hui Chu Xiao-Hua Zhu Hong Hong Yong-Xin Guo Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology IEEE Access Frequency beam-scanning subarray topology radiation efficiency microstrip-to-stripline magneto-electric-dipole |
| title | Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology |
| title_full | Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology |
| title_fullStr | Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology |
| title_full_unstemmed | Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology |
| title_short | Improvement of Radiation Efficiency for Frequency Beam-Scanning Antennas Using a Subarray Topology |
| title_sort | improvement of radiation efficiency for frequency beam scanning antennas using a subarray topology |
| topic | Frequency beam-scanning subarray topology radiation efficiency microstrip-to-stripline magneto-electric-dipole |
| url | https://ieeexplore.ieee.org/document/9116971/ |
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