Abstract: A system and method for measuring noise parameters of a linear device-under-test is provided. The system includes a noise source, an impedance generator, a receiver for measuring noise power of the device-under-test, and a processor and memory. The impedance generator has a plurality of impedance generator settings to generate a plurality of driving-port impedances over a plurality of frequencies. The processor is configured for identifying a plurality of stable driving-port impedances, calculating an aggregate driving-port impedance for each of the stable driving-port impedances, identifying a minimal set of impedance generator settings for a user-selected frequency range, and calculating the noise parameters of the device-under-test based on the noise power measured by the receiver. The minimal set of impedance generator settings provide at least one aggregate driving-port impedance located within each of four linearly independent regions of a Smith Chart over the user-selected frequency range.

Abstract: A system and method for measuring noise parameters of a linear device-under-test is provided. The system includes a noise source, an impedance generator, a receiver for measuring noise power of the device-under-test, and a processor and memory. The impedance generator has a plurality of impedance generator settings to generate a plurality of driving-port impedances over a plurality of frequencies. The processor is configured for identifying a plurality of stable driving-port impedances, calculating an aggregate driving-port impedance for each of the stable driving-port impedances, identifying a minimal set of impedance generator settings for a user-selected frequency range, and calculating the noise parameters of the device-under-test based on the noise power measured by the receiver. The minimal set of impedance generator settings provide at least one aggregate driving-port impedance located within each of four linearly independent regions of a Smith Chart over the user-selected frequency range.