Augmented improved nested array with enhanced degrees of freedom and reduced mutual coupling effect
Abstract To reduce mutual coupling of an improved nested array (INA), the authors propose an augmented improved nested array (AINA) by splitting the dense subarray of the INA into two parts and rearranging one of them on the right side of the last element in the INA, which enhances the number of uni...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-11-01
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| Series: | Electronics Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/ell2.13002 |
| _version_ | 1797632529449091072 |
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| author | Weichuang Yu Peiyu He Huiheng Liu Da Qiu |
| author_facet | Weichuang Yu Peiyu He Huiheng Liu Da Qiu |
| author_sort | Weichuang Yu |
| collection | DOAJ |
| description | Abstract To reduce mutual coupling of an improved nested array (INA), the authors propose an augmented improved nested array (AINA) by splitting the dense subarray of the INA into two parts and rearranging one of them on the right side of the last element in the INA, which enhances the number of unique lags in difference coarray and reduces the number of element pairs with small separations. The closed‐form expressions for the physical element locations, the range of consecutive lags and the number of unique lags are derived for any given element number. It is indicated that the AINA possesses higher degrees of freedom and less mutual coupling than the common sparse arrays. Numerical simulations verify the superiority of the proposed configuration. |
| first_indexed | 2024-03-11T11:39:18Z |
| format | Article |
| id | doaj.art-24e2e0caf87c41eeb5f0573a4cc78f46 |
| institution | Directory Open Access Journal |
| issn | 0013-5194 1350-911X |
| language | English |
| last_indexed | 2024-03-11T11:39:18Z |
| publishDate | 2023-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Electronics Letters |
| spelling | doaj.art-24e2e0caf87c41eeb5f0573a4cc78f462023-11-10T08:20:32ZengWileyElectronics Letters0013-51941350-911X2023-11-015921n/an/a10.1049/ell2.13002Augmented improved nested array with enhanced degrees of freedom and reduced mutual coupling effectWeichuang Yu0Peiyu He1Huiheng Liu2Da Qiu3School of Physics and Electronic Engineering Hubei University of Arts and Science Xiangyang ChinaCollege of Electronics and Information Engineering Sichuan University Chengdu ChinaSchool of Physics and Electronic Engineering Hubei University of Arts and Science Xiangyang ChinaCollege of Electronics and Information Engineering Sichuan University Chengdu ChinaAbstract To reduce mutual coupling of an improved nested array (INA), the authors propose an augmented improved nested array (AINA) by splitting the dense subarray of the INA into two parts and rearranging one of them on the right side of the last element in the INA, which enhances the number of unique lags in difference coarray and reduces the number of element pairs with small separations. The closed‐form expressions for the physical element locations, the range of consecutive lags and the number of unique lags are derived for any given element number. It is indicated that the AINA possesses higher degrees of freedom and less mutual coupling than the common sparse arrays. Numerical simulations verify the superiority of the proposed configuration.https://doi.org/10.1049/ell2.13002array signal processingdegrees of freedomdifference coarraydirection of arrival estimationmutual coupling |
| spellingShingle | Weichuang Yu Peiyu He Huiheng Liu Da Qiu Augmented improved nested array with enhanced degrees of freedom and reduced mutual coupling effect Electronics Letters array signal processing degrees of freedom difference coarray direction of arrival estimation mutual coupling |
| title | Augmented improved nested array with enhanced degrees of freedom and reduced mutual coupling effect |
| title_full | Augmented improved nested array with enhanced degrees of freedom and reduced mutual coupling effect |
| title_fullStr | Augmented improved nested array with enhanced degrees of freedom and reduced mutual coupling effect |
| title_full_unstemmed | Augmented improved nested array with enhanced degrees of freedom and reduced mutual coupling effect |
| title_short | Augmented improved nested array with enhanced degrees of freedom and reduced mutual coupling effect |
| title_sort | augmented improved nested array with enhanced degrees of freedom and reduced mutual coupling effect |
| topic | array signal processing degrees of freedom difference coarray direction of arrival estimation mutual coupling |
| url | https://doi.org/10.1049/ell2.13002 |
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