Abstract

The optimum design of microwave active mixers has been accomplished using powerful and advanced design-oriented non-linear techniques. Optimum loads at all relevant frequencies (RF, IF, LO, Image) are determined, using a combination of a frequency-domain (Spectral Balance) non­linear algorithm and a numerical scheme for optimum load determination. Moreover, a simplified and fairly accurate quasi-linear method has been developed for a fast and inexpensive preliminary evaluation of mixer's performances.