Improved adapters for the accurate calibration of LISN input impedance

The paper deals with the accurate calibration of LISN impedance at the EUT port, focusing on the effects of parasitic parameters at the EUT side and their effects on calibration. The goal is to improve the calibration accuracy and repeatability by adopting a standardized external adapter, used to connect the measurement system to the LISN. Different models are analysed, both theoretically and experimentally, through meaningful experimental examples.