Sidelobe Suppression with Null Steering by Independent Weight Control
A uniform linear array of n antenna elements can steer up to n-1 nulls. In situations where less than n-1 nulls are required to be steered, the existing algorithms have no criterion to utilize the remaining weights for sidelobe suppression. This work combines sidelobe suppression capability with nul...
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Format: | Article |
Language: | English |
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Wiley
2015-01-01
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Series: | International Journal of Antennas and Propagation |
Online Access: | http://dx.doi.org/10.1155/2015/136826 |
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author | Zafar-Ullah Khan Aqdas Naveed Malik Fawad Zaman Syed Azmat Hussain Abdul-Rehman Khan |
author_facet | Zafar-Ullah Khan Aqdas Naveed Malik Fawad Zaman Syed Azmat Hussain Abdul-Rehman Khan |
author_sort | Zafar-Ullah Khan |
collection | DOAJ |
description | A uniform linear array of n antenna elements can steer up to n-1 nulls. In situations where less than n-1 nulls are required to be steered, the existing algorithms have no criterion to utilize the remaining weights for sidelobe suppression. This work combines sidelobe suppression capability with null steering by independent weight control. For this purpose, the array factor is transformed as the product of two polynomials. One of the polynomials is used for null steering by independent weight control, while the second one is for sidelobe suppression whose coefficients or weights are determined by using convex optimization. Finally, a new structure is proposed to incorporate the product of two polynomials such that sidelobe suppression weights are decoupled from those of null steering weights. Simulation results validate the effectiveness of the proposed scheme. |
format | Article |
id | doaj-art-0d3d4a6f00b54499aaa7523c9953d317 |
institution | Kabale University |
issn | 1687-5869 1687-5877 |
language | English |
publishDate | 2015-01-01 |
publisher | Wiley |
record_format | Article |
series | International Journal of Antennas and Propagation |
spelling | doaj-art-0d3d4a6f00b54499aaa7523c9953d3172025-02-03T01:03:42ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772015-01-01201510.1155/2015/136826136826Sidelobe Suppression with Null Steering by Independent Weight ControlZafar-Ullah Khan0Aqdas Naveed Malik1Fawad Zaman2Syed Azmat Hussain3Abdul-Rehman Khan4Department of Electronic Engineering, IIU, H-10, Islamabad 44000, PakistanDepartment of Electronic Engineering, IIU, H-10, Islamabad 44000, PakistanDepartment of Electrical Engineering, COMSATS Institute of Information Technology, Attock Campus, Attock 43600, PakistanSchool of Engineering and Applied Sciences, ISRA University, Islamabad Campus, Islamabad 44000, PakistanDepartment of Electrical Engineering, COMSATS Institute of Information Technology, Attock Campus, Attock 43600, PakistanA uniform linear array of n antenna elements can steer up to n-1 nulls. In situations where less than n-1 nulls are required to be steered, the existing algorithms have no criterion to utilize the remaining weights for sidelobe suppression. This work combines sidelobe suppression capability with null steering by independent weight control. For this purpose, the array factor is transformed as the product of two polynomials. One of the polynomials is used for null steering by independent weight control, while the second one is for sidelobe suppression whose coefficients or weights are determined by using convex optimization. Finally, a new structure is proposed to incorporate the product of two polynomials such that sidelobe suppression weights are decoupled from those of null steering weights. Simulation results validate the effectiveness of the proposed scheme.http://dx.doi.org/10.1155/2015/136826 |
spellingShingle | Zafar-Ullah Khan Aqdas Naveed Malik Fawad Zaman Syed Azmat Hussain Abdul-Rehman Khan Sidelobe Suppression with Null Steering by Independent Weight Control International Journal of Antennas and Propagation |
title | Sidelobe Suppression with Null Steering by Independent Weight Control |
title_full | Sidelobe Suppression with Null Steering by Independent Weight Control |
title_fullStr | Sidelobe Suppression with Null Steering by Independent Weight Control |
title_full_unstemmed | Sidelobe Suppression with Null Steering by Independent Weight Control |
title_short | Sidelobe Suppression with Null Steering by Independent Weight Control |
title_sort | sidelobe suppression with null steering by independent weight control |
url | http://dx.doi.org/10.1155/2015/136826 |
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