Fast EM-Driven Size Reduction of Antenna Structures by Means of Adjoint Sensitivities and Trust Regions

Koziel, Slawomir; Bekasiewicz, Adrian

doi:10.1109/lawp.2015.2418336

Cited by 78 publications

(55 citation statements)

References 16 publications

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“…Combining physics-based modelling with data-driven modelling may also produce promising results [1,5]. In terms of conventional optimization methods, only gradient-based search seems to ensure comparable efficiency if derivative data are obtained through cheap adjoint sensitivities [15,16].…”

Section: Introductionmentioning

confidence: 99%

Rapid Design Optimization of Multi-Band Antennas by Means of Response Features

Kozieł

Bekasiewicz

2017

Metrology and Measurement Systems

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This work examines the reduced-cost design optimization of dual-and multi-band antennas. The primary challenge is independent yet simultaneous control of the antenna responses at two or more frequency bands. In order to handle this task, a feature-based optimization approach is adopted where the design objectives are formulated on the basis of the coordinates of so-called characteristic points (or response features) of the antenna response. Due to only slightly nonlinear dependence of the feature points on antenna geometry parameters, optimization can be attained at a low computational cost. Our approach is demonstrated using two antenna structures with the optimum designs obtained in just a few dozen of EM simulations of the respective structure.

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Section: Introductionmentioning

confidence: 99%

Rapid Design Optimization of Multi-Band Antennas by Means of Response Features

Kozieł

Bekasiewicz

2017

Metrology and Measurement Systems

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“…Adjoint sensitivity [16,17] is one of technologies that allow speeding up EM-driven optimization process [18,19] by providing information about the system response and its gradients at little extra computational cost. Unfortunately, this technology is not yet widely used in computational electromagnetic community and commercially only available through a few EM solvers [20,21].…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of expensive electromagnetic simulation models

Koziel

Bekasiewicz

2016

Applied Soft Computing

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“…The state of the art analysis indicates that considerable reduction of the simulation-driven design effort can be obtained either through gradient search with adjoint sensitivities [11], [12], or by employing fast surrogate models [13], [14]. The first option is conceptually simpler and with strong theoretical foundations, although commercial availability of adjoint technology in EM solvers is still very limited.…”

Section: Introductionmentioning

confidence: 99%

Optimization-driven design of compact UWB MIMO antenna

Bekasiewicz

Koziel

Dhaene

2016

2016 10th European Conference on Antennas and Propagation (EuCAP)

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Abstract-In the paper, a concept and design of a compact MIMO antenna is presented. In our approach, an improved space filling is obtained by constraining an individual antenna layout and optimizing it for minimum size. The MIMO design is constructed by composing the two of previously designed structures. Because the design problem is heavily constrained both in terms of geometry and electrical performance objectives, surrogate-based optimization techniques are used to accomplish the design process in reasonable timeframe. The final MIMO design features a small size of only 565 mm 2 and exhibits good isolation in the entire UWB band.Index Terms-UWB antennas, MIMO antennas, computeraided design, EM-driven design, topology optimization, surrogate-based optimization.

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Fast EM-Driven Size Reduction of Antenna Structures by Means of Adjoint Sensitivities and Trust Regions

Cited by 78 publications

References 16 publications

Rapid Design Optimization of Multi-Band Antennas by Means of Response Features

Rapid Design Optimization of Multi-Band Antennas by Means of Response Features

Multi-objective optimization of expensive electromagnetic simulation models

Optimization-driven design of compact UWB MIMO antenna

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