Automated Hierarchical Synthesis of Radio-Frequency Integrated Circuits and Systems by Fábio Passos & Elisenda Roca & Rafael Castro-López & Francisco V. Fernández

Author:Fábio Passos & Elisenda Roca & Rafael Castro-López & Francisco V. Fernández
Language: eng
Format: epub
ISBN: 9783030472474
Publisher: Springer International Publishing

The hypervolume of the Pareto front obtained now with the OFFSONF approach (after electromagnetically simulating the final results) was HV, which is clearly inferior to the EMO and OFFSO approaches. Regarding the set coverage, the calculated figures were

that indicates that the quality of the surrogate model has clearly decreased. It is possible to conclude that the application of surrogate modeling strategies can enhance the efficiency-accuracy trade-off of conventional analytical or EM-based inductor optimization techniques for RF integrated circuits. The two-step surrogate modeling strategy dramatically improves the modeling accuracy of integrated inductors.

It can be concluded that prescreening techniques can be used in surrogate-assisted optimization techniques in order to achieve similar results to EM-based approaches with a significantly lower computation time. However, it is also found that similar or better results are obtained if offline surrogate models with a sufficient number of inductor samples are created following the proposed modeling strategy. Much lower CPU times must be invested during the optimization process since expensive EM simulations are not performed during the optimization stage. The quality of the results of the proposed strategy is also competitive in multi-objective optimization problems, whereas orders of magnitude computation time is saved.

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