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...

Full description

Saved in:
Bibliographic Details
Main Authors: Zafar-Ullah Khan, Aqdas Naveed Malik, Fawad Zaman, Syed Azmat Hussain, Abdul-Rehman Khan
Format: Article
Language:English
Published: Wiley 2015-01-01
Series:International Journal of Antennas and Propagation
Online Access:http://dx.doi.org/10.1155/2015/136826
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1832566592250052608
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
work_keys_str_mv AT zafarullahkhan sidelobesuppressionwithnullsteeringbyindependentweightcontrol
AT aqdasnaveedmalik sidelobesuppressionwithnullsteeringbyindependentweightcontrol
AT fawadzaman sidelobesuppressionwithnullsteeringbyindependentweightcontrol
AT syedazmathussain sidelobesuppressionwithnullsteeringbyindependentweightcontrol
AT abdulrehmankhan sidelobesuppressionwithnullsteeringbyindependentweightcontrol