Modeling of impedance of rectangular cross-section conductors

The frequency dependence of the per-unit-length parameters R, L, C, G of transmission lines often must be taken into account in transient simulations of interconnects in IC chips and packages. In the transient simulation of transmission lines, in order to achieve high simulation efficiency, empirical closed form models are often used to represent frequency-dependent resistance and inductance properties of metal conductors. This paper presents a new closed form model for the frequency-dependent resistance and internal inductance of rectangular cross-section conductors. The model is established from numerical computation results by the partial element equivalent circuit (PEEC) method and is found to be more accurate than existing closed form models.