An accurate compact model with skin and proximity effects for high coupling-coefficient transformers

An accurate wide-band compact model with proximity effects for on-chip transformers has been developed. According to the physical origin of the elements, method to determine parameters of these elements are offered. Furthermore, a new structure for transformers with high k (coupling coefficient) value has been proposed. Model verification with EM-simulation data of this structure demonstrates the accurate prediction for transformer performance in a wide band.