S-Parameters Allow High-Frequency Verification of RF Switch Models

S- (scattering) parameters characterize electrical networks using matched impedances. Scattering refers to the way traveling currents or voltages are affected when they meet a discontinuity in a transmission line. S-parameters allow a device to be treated as a “black box” with inputs and outputs, enabling a system to be modeled without having to deal with the complex details of its actual structure.