Behaviour of minimum excess-noise figure and maximum transducer gain in a linear 2 port

In order to minimise the excess-noise figure (excess-noise figure = noise figure ¿ 1) of a linear 2 port, the source conductance gs must have an optimum value of gso. It is shown that this value of gso does not necessarily correspond to the condition for maximum transducer gain. Considering the excess-noise figure and transducer gain, a compromise value of gs is found for the minimum noise measure.