MATCHING NETWORK CHARACTERIZATION USING VARIABLE IMPEDANCE ANALYSIS

摘要

A method for characterizing a matching network is provided to improve a matching accuracy by preventing an RF(Radio Frequency) measuring accuracy level from affecting an accuracy of an ESR approximation. A method for characterizing a matching network(106) includes a connection process, which couples the matching network with a load(104). An output of the matching network is measured within a range of load impedance. An ESR(Equivalent Series Resistance) of the matching network is calculated based on a relation between the measured output and the load resistance. The load is a variable impedance surrogate load. The surrogate load includes a tunable circuit, which generates various impedances within a target range. Conditions of the matching network are evaluated based on the calculated ESR.