Coils are far more than wire wound around a bobbin On their inside, a complex interaction between electrical, magnetic and thermal effects takes place. In view of their function as basic components, the miniaturization of the coils is of particular interest for many applications. However, there are usually conflicts between practical demands for high inductivity and current-carrying capacity and low resistance, volume and capacitive effects. At the same time, the cost pressure for passive components is considerable. While today's active electronic devices - in terms of the functionality they offer - are already greatly miniaturized, this state has not been reached so far for the majority of passive electrical components, with the miniaturization of coils being least advanced. Therefore, it is very important to develop strategies for miniaturizing passive electronic components, also, for use in the smart system integration, with important functional parameters being improved and parasitic effects being reduced at the same time.
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