2-18 GHz conformal low-profile log-periodic array on a cylindrical conductor
This paper presents a conformal log-periodic array covering an ultra-wideband of 2-18 GHz. It employs monopoles of different heights for the high band, top-hat monopoles for the middle band, and folded top-hat monopoles for the low band. The top hats help to achieve a low profile of the monopoles wh...
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sg-ntu-dr.10356-1378402020-04-16T02:46:45Z 2-18 GHz conformal low-profile log-periodic array on a cylindrical conductor Chen, Qiaoyu Hu, Zhenxin Shen, Zhongxiang Wu, Wen School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Conformal Antenna Low-profile Antenna This paper presents a conformal log-periodic array covering an ultra-wideband of 2-18 GHz. It employs monopoles of different heights for the high band, top-hat monopoles for the middle band, and folded top-hat monopoles for the low band. The top hats help to achieve a low profile of the monopoles while the folding is to maintain a good input resistance at the low band. A meandering microstrip line on the bottom is used to feed the array. The proposed antenna is mounted on a conducting cylindrical surface with all the top hats conformal and aligned to the outline of the cylinder. A prototype is fabricated and tested. Measured results show that an impedance bandwidth from 2 to 18.3 GHz (9.15:1) for VSWR < 2 is obtained. Over the same band, the measured gain is better than 7.2 dBi. The antenna has a very low profile of 0.053 λL at the lowest operating frequency, which should be useful in many communication systems such as missile and airborne applications. 2020-04-16T02:46:45Z 2020-04-16T02:46:45Z 2017 Journal Article Chen, Q., Hu, Z., Shen, Z., & Wu, W. (2018). 2–18 GHz conformal low-profile log-periodic array on a cylindrical conductor. IEEE Transactions on Antennas and Propagation, 66(2), 729-736. doi:10.1109/TAP.2017.2782259 0018-926X https://hdl.handle.net/10356/137840 10.1109/TAP.2017.2782259 2-s2.0-85038865581 2 66 729 736 en IEEE Transactions on Antennas and Propagation © 2017 IEEE. All rights reserved. |
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Engineering::Electrical and electronic engineering Conformal Antenna Low-profile Antenna Chen, Qiaoyu Hu, Zhenxin Shen, Zhongxiang Wu, Wen 2-18 GHz conformal low-profile log-periodic array on a cylindrical conductor |
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This paper presents a conformal log-periodic array covering an ultra-wideband of 2-18 GHz. It employs monopoles of different heights for the high band, top-hat monopoles for the middle band, and folded top-hat monopoles for the low band. The top hats help to achieve a low profile of the monopoles while the folding is to maintain a good input resistance at the low band. A meandering microstrip line on the bottom is used to feed the array. The proposed antenna is mounted on a conducting cylindrical surface with all the top hats conformal and aligned to the outline of the cylinder. A prototype is fabricated and tested. Measured results show that an impedance bandwidth from 2 to 18.3 GHz (9.15:1) for VSWR < 2 is obtained. Over the same band, the measured gain is better than 7.2 dBi. The antenna has a very low profile of 0.053 λL at the lowest operating frequency, which should be useful in many communication systems such as missile and airborne applications. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Chen, Qiaoyu Hu, Zhenxin Shen, Zhongxiang Wu, Wen |
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Article |
author |
Chen, Qiaoyu Hu, Zhenxin Shen, Zhongxiang Wu, Wen |
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Chen, Qiaoyu |
title |
2-18 GHz conformal low-profile log-periodic array on a cylindrical conductor |
title_short |
2-18 GHz conformal low-profile log-periodic array on a cylindrical conductor |
title_full |
2-18 GHz conformal low-profile log-periodic array on a cylindrical conductor |
title_fullStr |
2-18 GHz conformal low-profile log-periodic array on a cylindrical conductor |
title_full_unstemmed |
2-18 GHz conformal low-profile log-periodic array on a cylindrical conductor |
title_sort |
2-18 ghz conformal low-profile log-periodic array on a cylindrical conductor |
publishDate |
2020 |
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https://hdl.handle.net/10356/137840 |
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1681056452235493376 |