@article{SeligerFaltlhauser2023, author = {Seliger, Norbert and Faltlhauser, Georg}, title = {Progressive Expansion Sampling of Quasi-Static Magnetic Fields in Unconfined Regions}, series = {IEEE Transactions on Components, Packaging and Manufacturing Technology}, journal = {IEEE Transactions on Components, Packaging and Manufacturing Technology}, doi = {10.1109/TCPMT.2023.3283285}, pages = {9}, year = {2023}, abstract = {We present a fast and accurate measurement technique for quasi-static magnetic fields by employing a progressive sampling method in an unconfined input space. The proposed machine learning algorithm is tested against uniform sampling on printed circuit board test structures and a buck converter. We prove allocation of multiple, separated regions with predefined lateral field limits at MHz frequencies. The feasibility of equivalent magnetic dipole source modeling based on a small number of samples is demonstrated. Compared to uniform testing, progressive expansion sampling identifies contours of given field limits in less than 3\% of the reference measurement time.}, language = {en} }