Optimization of Array Boundaries for Arbitrary Footprint Patterns

Fondevila-Gómez, J.; Rodríguez‐González, J. A.; Trastoy, A.; Ares‐Pena, F.

doi:10.1109/tap.2004.823997

Cited by 13 publications

(12 citation statements)

References 6 publications

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“…In recent years, there is growing interest of using 4D antenna arrays to synthesize the satellite footprint patterns (Chou et al, 2004;Villegas, 2007;Brégains et al, 2002;Yang et al, 2013;Chen et al, 2008;Zheng et al, 2010;Fondevila et al, 2004). In these proposed synthesis methods, the RPLs and DRR can be well decreased.…”

Section: Introductionmentioning

confidence: 99%

Efficient Synthesis of Irregularly Shaped Radiation Patterns Based on Four-Dimensional Planar Arrays and Post-Processing

Yang

Nie

2015

Electromagnetics

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An efficient approach based on the combination of two-dimensional Woodward-Lawson analytical method and differential evolution optimization algorithm is developed for the synthesis of irregularly shaped radiation patterns based on four-dimensional planar arrays. Owing to the time-modulation of four-dimensional arrays, the ripples in the coverage area and the side-lobe levels are suppressed effectively. By combining the two-dimensional Woodward-Lawson method and differential evolution algorithm, the optimized time sequences and element excitations can be obtained. Radiation efficiency of time-modulated planar arrays also has been optimized and a significant improvement is achieved. Considering a practical application scenario where six-bit phase shifters are employed, the peak side-lobes have been suppressed significantly by employing the genetic algorithm. Numerical examples are presented to demonstrate the effectiveness and flexibility of the proposed approach.

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Section: Introductionmentioning

confidence: 99%

Efficient Synthesis of Irregularly Shaped Radiation Patterns Based on Four-Dimensional Planar Arrays and Post-Processing

Yang

Nie

2015

Electromagnetics

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“…J. Fondevila‐Gómez et al . proposed a method in which a rectangular footprint pattern can be obtained by optimization of the array boundary followed by optimization of element excitations. J.…”

Section: Introductionmentioning

confidence: 99%

“…The beam pattern of antenna arrays involving in satellite applications must have a low dynamic range ratio (DRR) in order to minimize the effect of mutual coupling among the elements. However, synthesis of footprint pattern from planar arrays is a challenging task and several approaches are reported in the literature for obtaining a footprint pattern [1][2][3][4][5][6][7] with different design specifications.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of satellite footprint patterns from rectangular planar array antenna by using swarm‐based optimization algorithms

Chatterjee

Mahanti

Ghatak

2013

Satell Commun Network

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SUMMARY A pattern synthesis method based on Firefly Algorithm (FA) and Artificial Bee Colony (ABC) optimization has been presented to generate satellite footprint patterns from a rectangular planar array of isotropic antennas by modifying the amplitude, phase, and the state of the array elements. Three cases comprising three different footprints of rectangular, square, and circular boundary are generated from the same array by using two different swarm‐based optimization algorithms FA and ABC. Both the algorithms, following the proposed procedures are able to generate the three different footprint patterns while maintaining a satisfactory lower peak side lobe level and ripple. A comparative analysis has been carried out between FA, ABC, and Genetic Algorithm (GA) for the presented problem in terms of fitness value for the three different cases. The superiority of FA and ABC over GA has been established in terms of finding better solutions for all the three cases of the proposed problem. Copyright © 2013 John Wiley & Sons, Ltd.

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“…The inherent limitations in this method are a complete lack of control over the SLLs and RPLs. Another kinds of methods based on angle-dependent homothetic transformation (ADHT) [7] were developed, which are capable of to synthesize footprint patterns from arrays with any particular lattice. However, the synthesized SLLs in [7] were rather high (about À20 dB) for some applications.…”

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confidence: 99%

Synthesis of satellite footprint patterns from time‐modulated planar arrays with very low dynamic range ratios

Chen

Yang

Nie

2008

Int J Numerical Modelling

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SUMMARYAn efficient pattern synthesis approach has been developed for the synthesis of satellite footprint patterns using time-modulated planar arrays. The approach can be used to effectively control both the ripples in the coverage zone and the sidelobe levels, due to the adoption of time-modulated antenna arrays. The optimized time sequences and element excitations are obtained by the method based on a combination of a differential evolution strategy (DES) and a modified 2D Woodward-Lawson method. Normally, planar array synthesis is rather time consuming, partly due to the inherently large number of optimization variables and partly due to the fact that the calculation of fitness function is also time consuming. A fast computation approach based on the 2D fast Fourier transform (FFT) is thus applied in the DES for the planar array pattern computation. Several representative examples are presented to show the flexibility and effectiveness of the proposed approach.

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Optimization of Array Boundaries for Arbitrary Footprint Patterns

Cited by 13 publications

References 6 publications

Efficient Synthesis of Irregularly Shaped Radiation Patterns Based on Four-Dimensional Planar Arrays and Post-Processing

Efficient Synthesis of Irregularly Shaped Radiation Patterns Based on Four-Dimensional Planar Arrays and Post-Processing

Synthesis of satellite footprint patterns from rectangular planar array antenna by using swarm‐based optimization algorithms

Synthesis of satellite footprint patterns from time‐modulated planar arrays with very low dynamic range ratios

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