Comparison of reconfigurable methods of active phased array antenna

Bu, Suliang; Daryoush, A.S.

doi:10.1109/aps.1993.385365

Cited by 3 publications

(1 citation statement)

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“…Peters proposed a method to reconfigure the amplitude and phase distribution of the remaining elements for minimizing the average SLL via a conjugate gradient method. Bu and Daryoush used the biquadratic programming method in reconfiguring the array by changing the phase of each of the remaining active elements. Mailloux used the method of replacing the signals from failed elements in a digital beamforming receiving array.…”

Section: Introductionmentioning

confidence: 99%

Limits of compensation in a failed antenna array

Acharya

Sinha

2014

Int J RF and Microwave Comp Aid Eng

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In large antenna arrays, the possibility of occurrence of faults in some of the radiating elements cannot be precluded at all times. In such situations, the radiation pattern of the array gets distorted, mostly with an increase in sidelobe level and decrease in gain. Although it is not possible to restore the pattern fully by rearranging the excitations of the functioning elements, compensation methods have been reported in the literature for restoring one performance parameter of the array and making a trade‐off on some other parameter. In this article, we have made a study on the tolerance level of this compensation process. One part of the study deals with the thinning in the failed array, that is, to find a limit on the minimum number of functioning elements of the array that can restore the digital beamforming of the failed array. The second part of study deals with finding the maximum number of element failures that can be compensated. The study was carried out by optimizing the amplitude excitations of the failed array. Instead of classical optimization techniques, particle swarm optimization was used for the compensation process. © 2014 Wiley Periodicals, Inc. Int J RF and Microwave CAE 24:635–645, 2014.

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Section: Introductionmentioning

confidence: 99%