Array aperture design using irregular polyomino subarrays

Mailloux, Robert J.; Santarelli, Scott; Roberts, Thomas M.

doi:10.1109/array.2010.5613282

Cited by 12 publications

(6 citation statements)

References 5 publications

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“…The array is built by using a single type of polyomino tile composed of elements [11] whose shape is selected such that the array aperture is fully filled [i.e., ] and the user-defined scanning/wideband performances are matched [16]. If the polyomino is symmetric, orientations are at hand, and they are obtained by rotating the subarray of multiples of , while different states exist in case of asymmetric polyomino shapes (Fig.…”

Section: A Ga-based Subarraying Approachmentioning

confidence: 99%

GA-Based Optimization of Irregular Subarray Layouts for Wideband Phased Arrays Design

Rocca

Mailloux

Toso

2015

Antennas Wirel. Propag. Lett.

114

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The design of phased arrays generating low sidelobes and grating-lobes-free patterns over wide frequency bandwidths is addressed. The array structure is decomposed in subarrays with irregular polyomino tiles whose locations and orientations are optimized by means of a genetic algorithms-based approach. A set of representative results is reported and discussed to give some insights on the performance of the proposed approach also in comparison to state-of-the-art solutions.

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Section: A Ga-based Subarraying Approachmentioning

confidence: 99%

GA-Based Optimization of Irregular Subarray Layouts for Wideband Phased Arrays Design

Rocca

Mailloux

Toso

2015

Antennas Wirel. Propag. Lett.

114

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“…Our recent studies [1], [2] have shown that using irregular subarrays can greatly reduce quantization lobes that would otherwise result from the use of contiguous rectangular subarrays. Moreover, array cost can be reduced by filling the array Manuscript with a single type of polyomino subarray that is rotated in increments of 90 and flipped, to occupy eight different states, and by choosing the subarray size to be a power of two so that the subarrays can be fed using lossless, orthogonal power dividers.…”

Section: Introductionmentioning

confidence: 99%

Mutual Coupling Effects and Their Compensation in a Time-Delay Scanned Array of Irregular Subarrays

Mailloux¹,

Santarelli

2013

Antennas Wirel. Propag. Lett.

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A well-known array broadbanding technique employs rectangular subarrays to introduce time delay into phase scanned arrays. This practice results in large quantization lobes that grow with scan and frequency offset. Previous studies have shown that in the absence of mutual coupling, the use of irregular subarrays can eliminate these quantization lobes without significantly increasing the average sidelobe level. However, there has remained some concern that the phase discontinuity between subarrays would, through mutual coupling, further distort the aperture distribution and increase array sidelobes and reflections. This letter addresses the effect of mutual coupling in arrays of time-delayed subarrays and shows that the pattern distortion caused by mutual coupling in bandwidth systems is relatively small compared to the quantization lobes and can be completely eliminated at any one frequency (for "single mode" radiating elements) by selecting the proper incident voltage to compensate for the coupling. After compensation, any remaining sidelobes are due to the subarray phase discontinuity and are identical to those with mutual coupling neglected.

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“…Recently, subarray technology has attracted considerable interests in radar and communication systems, because it can greatly reduce the cost and complexity of the system by reducing the number of antenna splitters and phase shifters [1]. Currently, the subarray partition and optimization problem remains to be a large barrier in the development of subarray technology.…”

Section: Introductionmentioning

confidence: 99%

Advanced Fruit Fly Optimization Algorithm and Its Application to Irregular Subarray Phased Array Antenna Synthesis

Zhang

Shi

2019

IEEE Access

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In this paper, an advanced fruit fly algorithm (FOA) is proposed and applied in subarray phased array antenna synthesis. The proposed algorithm introduces orthogonal crossover, quantum selection and simulated annealing operations on the individuals, and then combines them by using an adaptive expansion-contraction factor. Accordingly, a linear generation mechanism of candidate solution based fruit fly algorithm (LGMS-FOA) is generated, in which individuals are selected in a highly balanced way, and the poor solutions are still accepted with a varying probability during the iteration. These mechanisms help the proposed algorithm enhance the population diversity and global searching capability but avoid falling into local optimum. Numerical classical unimodel benchmark functions are provided to test the proposed algorithm (OLFOA) in comparison with other advanced algorithms. In addition, to further validate its superiority, the proposed algorithm is applied to handle the subarray array synthesis of several tough planar and circular apertures with different array sizes and subarray shapes. Simulation results show that the proposed OLFOA can achieve better performance than other improved evolutionary algorithms.

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Array aperture design using irregular polyomino subarrays

Cited by 12 publications

References 5 publications

GA-Based Optimization of Irregular Subarray Layouts for Wideband Phased Arrays Design

GA-Based Optimization of Irregular Subarray Layouts for Wideband Phased Arrays Design

Mutual Coupling Effects and Their Compensation in a Time-Delay Scanned Array of Irregular Subarrays

Advanced Fruit Fly Optimization Algorithm and Its Application to Irregular Subarray Phased Array Antenna Synthesis

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