Importance of retardation in PEEC models for electrical interconnect and package (EIP) applications

Partial Element Equivalent Circuit (PEEC) models have been employed in both the EMI (Electro-Magnetic Interference) as well as the EIP (Electrical Interconnect and Package) areas. It is generally assumed that the retardation between the circuit elements can be ignored for EIP problems since the radiated fields are not of interest for this application. In this paper, we give some insight into the importance of retardation for EIP problems.