Fast Antenna Optimization Using Gradient Monitoring and Variable-Fidelity EM Models

Authors

  • Slawomir Koziel School of Science and Engineering, Reykjavik University, Reykjavik, Iceland,
  • Anna Pietrenko-Dabrowska Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80-233 Gdansk, Poland

Keywords:

antenna optimization, EM-driven design, trustregion framework, variable-fidelity EM simulations

Abstract

Accelerated simulation-driven design optimization of antenna structures is proposed. Variable-fidelity electromagnetic (EM) analysis is used as well as the trust-region framework with limited sensitivity updates. The latter are controlled by monitoring the changes of the antenna response gradients. Our methodology is verified using three compact wideband antennas. Comprehensive benchmarking demonstrates its superiority over both conventional and surrogate-assisted algorithms.

References

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S. Koziel and A. Bekasiewicz, “Low-cost multi-objective optimization of antennas using Pareto front exploration and response features,” IEEE Int. Symp. Ant. Prop., Fajardo, Puerto-Rico, 2016.

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M. A. Haq, S. Koziel, and Q. S. Cheng, “EM-driven size reduction of UWB antennas with ground plane modifications,” Int. Applied Comp. Electromagnetics Society (ACES China) Symposium, 2017.

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Published

2020-11-07

Issue

Section

Articles