Publications Repository - Gdańsk University of Technology

In the letter, a reliable procedure for expedited design optimization of antenna structures by means of trust-region adaptive response scaling (TR-ARS) is proposed. The presented approach exploits two-level electromagnetic (EM) simulation models. A predicted high-fidelity model response is obtained by applying nonlinear frequency and amplitude correction to the low-fidelity model. The surrogate created this way is iteratively rebuilt and optimized within the trust region framework. Utilization of the correlations between the EM models of various fidelities allows for significant reduction of the design optimization cost. The operation and performance of the algorithm are demonstrated using a dual-band patch antenna optimized for several scenarios. Comparative study reveals computational benefits of TR-ARS over direct optimization of the high-fidelity EM model. Reliability of the optimization process is further confirmed by experimental validation of the fabricated antenna prototypes.

Authors

• prof. dr inż. Sławomir Kozieł link open in new tab ,
• Unnsteinsson Sigmar