Patent ID: 8269508

Claim:
A method of determining an optimal source impedance at an input of a device under testing (DUT) in a measurement bench, comprising the steps of: calibrating a source pull type bench as a measurement bench, adjusting a load impedance and continuous bias of the DUT, generating an electric power signal by a source and injected in the DUT, acquiring input impedances at the DUT and corresponding transducer power gain performances, wherein: adjusting a theoretically-defined source impedance over a measured input impedance of the DUT, determining the acquisition of transducer power gain performances according to the theoretically-defined source impedance, to the input impedance measured in the plane of the DUT, as well as a net power injected at the DUT input and an output power of the DUT, determining a deviation in performance according to simulated mismatchings between the theoretically-defined source impedance and the input impedances of the DUT, and in the case where the deviation is higher than a reference value, theoretically defining at least one new source impedance until iteratively obtaining a deviation lower than the reference value, and determining transducer power gain performances of the DUT based on this source impedance.