Phase-Only Pattern Synthesis for Linear Antenna Arrays

Liang, Junli; Fan, Xiao Xu; Fan, Wen; Zhou, Deyun; Li, Jian

doi:10.1109/lawp.2017.2771380

Cited by 53 publications

(50 citation statements)

References 17 publications

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“…• PGPS-based algorithms in [32]- [34]: They exhibit similar form as that used in [40], which has been proved to be computed with complexity O{max{N, L ML + L SL } 4 N 0.5 log(1/ )} where ≈ 10 −8 . Since algorithm in [34] has a two-stage independent loop, its complexity is doubled in each single iteration.…”

Section: Computational Complexitymentioning

confidence: 99%

Wide-Beam Array Antenna Power Gain Maximization via ADMM Framework

Lei,

Tian,

Lin

et al. 2021

Preprint

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This paper proposes two algorithms to maximize the minimum array power gain in a wide-beam mainlobe by solving the power gain pattern synthesis (PGPS) problem with and without sidelobe constraints. Firstly, the nonconvex PGPS problem is transformed into a nonconvex linear inequality optimization problem and then converted to an augmented Lagrangian problem by introducing auxiliary variables via the Alternating Direction Method of Multipliers (ADMM) framework. Next, the original intractable problem is converted into a series of nonconvex and convex subproblems. The nonconvex subproblems are solved by dividing their solution space into a finite set of smaller ones, in which the solution would be obtained pseudoanalytically. In such a way, the proposed algorithms are superior to the existing PGPS-based ones as their convergence can be theoretically guaranteed with a lower computational burden. Numerical examples with both isotropic element pattern (IEP) and active element pattern (AEP) arrays are simulated to show the effectiveness and superiority of the proposed algorithms by comparing with the related existing algorithms.

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Section: Computational Complexitymentioning

confidence: 99%

Wide-Beam Array Antenna Power Gain Maximization via ADMM Framework

Lei,

Tian,

Lin

et al. 2021

Preprint

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“…While it is comparatively easy to design an array with required gain and pattern specifications if full control on the feeding is available, phase only synthesis, which is much more difficult, has major advantages in terms of DC to RF power efficiency and costs inasmuch all amplifiers are working close to their best conditions. 1 For the same reason phased arrays adopting a density tapering in the element positions instead of an amplitude tapering have been promoted for satellite applications. 2,3 Reflectarrays are another example of antennas exploiting mainly a phase-only tapering.…”

Section: Introductionmentioning

confidence: 99%

“…When considering satellite antennas, it is of paramount importance the efficient exploitation of the limited available DC power even if the performance might be slightly reduced. While it is comparatively easy to design an array with required gain and pattern specifications if full control on the feeding is available, phase only synthesis, which is much more difficult, has major advantages in terms of DC to RF power efficiency and costs inasmuch all amplifiers are working close to their best conditions 1 . For the same reason phased arrays adopting a density tapering in the element positions instead of an amplitude tapering have been promoted for satellite applications 2,3 .…”

Section: Introductionmentioning

confidence: 99%

A comparison between basis functions for the efficient invasive weed optimization‐based optimization of phase‐only linear array patterns

Angeletti

Berretti

Maddio

et al. 2021

Micro & Optical Tech Letters

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Synthesis of phased array antennas generating shaped patterns by exploiting phase tapering only is a challenging problem. A phase-only tapering permits maximizing the DC to RF power efficiency and results to be particularly useful in satellite applications with stringent constraints on the available power. Such a synthesis is a highly nonlinear problem most effectively addressed via stochastic optimization techniques. In this paper several basis functions to represent the phase distribution are traded-off and compared, within an invasive weed optimization paradigm.

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“…Null steering in the radiation patterns of the antenna arrays can effectively overcome this problem by placing some selected nulls toward those undesired signals directions. Generally, null steering can be achieved by controlling the amplitude-only weighting [1][2][3][4], phase-only weighting [5][6][7][8][9][10][11][12], and complex (both amplitude and phase) weighting [13][14][15][16][17][18] of array elements excitations. It can also be achieved by controlling the separation distances between array elements [19,20].…”

Section: Introductionmentioning

confidence: 99%

Phase-Only Nulling With Limited Number of Controllable Elements

Abdulqader¹,

Mohammed²,

Thaher³

2020

PIER C

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In this paper, the required array patterns with controlled nulls are obtained by optimizing only the excitation phases of a small number of elements on both sides of the array. A genetic algorithm is used to appropriately find which elements of the array to be optimized and also to find the required number of the excitation phases. The performance of the proposed phase-only method is compared with some other exciting methods, and it is found to be competitive, fulfil all the desired radiation characteristics, and represent a good solution for interference mitigation. Moreover, the proposed phaseonly array is designed and validated under realistic electromagnetic effects using CST full wave modeling. Experimental results are found in a good agreement with the theoretical ones and show realistic array patterns with accurate nulls.

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Phase-Only Pattern Synthesis for Linear Antenna Arrays

Cited by 53 publications

References 17 publications

Wide-Beam Array Antenna Power Gain Maximization via ADMM Framework

Wide-Beam Array Antenna Power Gain Maximization via ADMM Framework

A comparison between basis functions for the efficient invasive weed optimization‐based optimization of phase‐only linear array patterns

Phase-Only Nulling With Limited Number of Controllable Elements

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