JISE


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Journal of Information Science and Engineering, Vol. 32 No. 3, pp. 611-624


Recovery of Failed Element Signal with a Digitally Beamforming Using Linear Symmetrical Array Antenna

SHAFQAT ULLAH KLHAN1, IJAZ MANSOOR QURESHI2, BILAL SHOAIB3 AND AQDAS NAVEED3 
1School of Engineering and Applied Sciences 
ISRA University 
Islamabad, 44000 Pakistan 
2Department of Electrical Engineering 
Air University 
Islamabad, 44000 Pakistan 
3Department of Electronic Engineering 
International Islamic University 
Islamabad, 44000 Pakistan 
E-mail: shafqatphy@yahoo.com; imqureshi@mail.au.edu.pk; {anaveed; bilal.phd42}@iiu.edu.pk

    An antenna array element failure problem is one of the practical and challenging issues in the field of adaptive beamforming. The complete radiation pattern of the array is distorted when any one of the elements fails. Sidelobes level increases, nulls are shifted and null depth is also decreased tremendously. In order to mitigate the problem, we have given a new and easy approach coined as conjugate symmetry approach of the array. In this, the failed element is given a conjugate of the output from its symmetrical counterpart element in the array. The Classical Dolph-Chebyshev and Taylor pattern are taken as the test antenna. The simulation results of both patterns show the validity and presentation of the proposed approach.

Keywords: linear symmetrical array, failure correction, array factor, beamforming, sidelobes level

  Retrieve PDF document (JISE_201603_06.pdf)