A new analytical model for square spiral inductors incorporating a magnetic layer

Embedding magnetic layer in inductors is an attractive option for increasing inductance density, which is a critical issue for radiofrequency applications. In this work, a magnetostatic model for square spiral inductors incorporating a magnetic layer is developed. This analytical model provides a fast and accurate calculation of inductance for integrated inductors with embedded magnetic layers either for regular cases or a singular case. In the presented model we replaced square spiral inductors with by square rings and we shown that this replacement gives accurately alike results. The results of the presented approach have been confirmed by already published data.