The measured and predicted noise figure of a GaAs heterojunction bipolar transistor mixer

An analytical technique is developed to predict the noise performance of the GaAs Heterojunction Bipolar transistor (HBT) mixer. The measured versus modelled data shows good agreement. The measured noise figure of the HBT mixer is 15.7 dB with an associated conversion gain of +13 dB (RF=950 MHz IF=50 MHz).