Modeling of the six-port discriminator used in a microwave direct digital receiver

A model of six-port discriminator (SPD) is described. This model is specially designed to perform computer simulation of a new microwave direct digital receiver, in which a six-port discriminator is a key component. The model is based on S-parameter of the six-port circuit, which are readily obtainable from both analysis and measurement of the circuit. Simulations run on Alta group's SPW (signal processing workstation) prove the validity of the model.