Wideband gain enhancement of high-isolation and quasi-omnidirectional metamaterial MIMO antenna for vehicular radar
In this article, a gain-enhanced wideband multiple-input multiple-output (MIMO) antenna with high isolation and quasi-omnidirectional radiation is proposed. It is a hexagonal structure and includes six identical endfire log-periodic dipole array (LPDA) elements. These antenna elements are distribute...
| Príomhchruthaitheoirí: | , , , , , |
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| Rannpháirtithe: | |
| Formáid: | Journal Article |
| Teanga: | English |
| Foilsithe / Cruthaithe: |
2023
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| Ábhair: | |
| Rochtain ar líne: | https://hdl.handle.net/10356/164510 |
| _version_ | 1826109776617013248 |
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| author | Wang, Ping Liu, Jie Huang, Guilan Wu, Qi Zhou, Chao Wang, Wensong |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Wang, Ping Liu, Jie Huang, Guilan Wu, Qi Zhou, Chao Wang, Wensong |
| author_sort | Wang, Ping |
| collection | NTU |
| description | In this article, a gain-enhanced wideband multiple-input multiple-output (MIMO) antenna with high isolation and quasi-omnidirectional radiation is proposed. It is a hexagonal structure and includes six identical endfire log-periodic dipole array (LPDA) elements. These antenna elements are distributed in the same plane and uniformly placed in a rotating arrangement with an angle difference of 60°, and then are suspended over a large metallic plate (LMP). To enhance the wideband gain, a different metasurface (MS) lens with a high refractive index is deployed around the endfire log-periodic dipole. The uniform MS lens makes electromagnetic waves deflect toward the array axis of the LPDA, whereas the gradient MS lens could form focused plane electromagnetic waves in the endfire direction. Furthermore, these antenna elements are isolated with a complementary split ring resonator (CSRR)-based electromagnetic band-gap (EBG) structure owing to its wide bandstop frequency and small-size characteristics. To validate the design concept, the prototype is fabricated and measured. The measured -10-dB impedance bandwidth covers 2.85-10.9 GHz (FBW 117.1%) and the gain varies from 10.37 to 14.82 dBi. Moreover, high isolation of better than 22.4 dB and low envelope correlation coefficient (ECC) of less than -62.3 dB is achieved between antenna elements. The proposed wideband MIMO antenna could be suitable for vehicular radar. |
| first_indexed | 2024-10-01T02:23:51Z |
| format | Journal Article |
| id | ntu-10356/164510 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:23:51Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1645102023-01-30T04:58:55Z Wideband gain enhancement of high-isolation and quasi-omnidirectional metamaterial MIMO antenna for vehicular radar Wang, Ping Liu, Jie Huang, Guilan Wu, Qi Zhou, Chao Wang, Wensong School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering High Isolation Metasurface Lens In this article, a gain-enhanced wideband multiple-input multiple-output (MIMO) antenna with high isolation and quasi-omnidirectional radiation is proposed. It is a hexagonal structure and includes six identical endfire log-periodic dipole array (LPDA) elements. These antenna elements are distributed in the same plane and uniformly placed in a rotating arrangement with an angle difference of 60°, and then are suspended over a large metallic plate (LMP). To enhance the wideband gain, a different metasurface (MS) lens with a high refractive index is deployed around the endfire log-periodic dipole. The uniform MS lens makes electromagnetic waves deflect toward the array axis of the LPDA, whereas the gradient MS lens could form focused plane electromagnetic waves in the endfire direction. Furthermore, these antenna elements are isolated with a complementary split ring resonator (CSRR)-based electromagnetic band-gap (EBG) structure owing to its wide bandstop frequency and small-size characteristics. To validate the design concept, the prototype is fabricated and measured. The measured -10-dB impedance bandwidth covers 2.85-10.9 GHz (FBW 117.1%) and the gain varies from 10.37 to 14.82 dBi. Moreover, high isolation of better than 22.4 dB and low envelope correlation coefficient (ECC) of less than -62.3 dB is achieved between antenna elements. The proposed wideband MIMO antenna could be suitable for vehicular radar. This work was supported in part by the Open Fund of Key Laboratory of Flight Techniques and Flight Safety, Civil Aviation Administration of China (CAAC), under Grant FZ2021KF08; and in part by the National Natural Science Foundation of China under Grant 61601074. 2023-01-30T04:58:55Z 2023-01-30T04:58:55Z 2022 Journal Article Wang, P., Liu, J., Huang, G., Wu, Q., Zhou, C. & Wang, W. (2022). Wideband gain enhancement of high-isolation and quasi-omnidirectional metamaterial MIMO antenna for vehicular radar. IEEE Transactions On Instrumentation and Measurement, 71, 5502912-. https://dx.doi.org/10.1109/TIM.2022.3210989 0018-9456 https://hdl.handle.net/10356/164510 10.1109/TIM.2022.3210989 2-s2.0-85139467149 71 5502912 en IEEE Transactions on Instrumentation and Measurement © 2022 IEEE. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering High Isolation Metasurface Lens Wang, Ping Liu, Jie Huang, Guilan Wu, Qi Zhou, Chao Wang, Wensong Wideband gain enhancement of high-isolation and quasi-omnidirectional metamaterial MIMO antenna for vehicular radar |
| title | Wideband gain enhancement of high-isolation and quasi-omnidirectional metamaterial MIMO antenna for vehicular radar |
| title_full | Wideband gain enhancement of high-isolation and quasi-omnidirectional metamaterial MIMO antenna for vehicular radar |
| title_fullStr | Wideband gain enhancement of high-isolation and quasi-omnidirectional metamaterial MIMO antenna for vehicular radar |
| title_full_unstemmed | Wideband gain enhancement of high-isolation and quasi-omnidirectional metamaterial MIMO antenna for vehicular radar |
| title_short | Wideband gain enhancement of high-isolation and quasi-omnidirectional metamaterial MIMO antenna for vehicular radar |
| title_sort | wideband gain enhancement of high isolation and quasi omnidirectional metamaterial mimo antenna for vehicular radar |
| topic | Engineering::Electrical and electronic engineering High Isolation Metasurface Lens |
| url | https://hdl.handle.net/10356/164510 |
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