The simulation of modern microwave circuits is achieved using a variety of tools, chief amongst these are full-wave field solvers and behavioral circuit simulators. While the latter has the advantage of simplicity, field phenomena such as multiple random external noise sources, and complex device coupling are difficult to include. A full-wave model on the other hand incorporates these effects, but is computationally expensive to operate. This paper demonstrates the application of behavioral models embedded into a full-wave field solver, which removes the computational overhead of simulating complex ICs using field solvers, while maintaining the generality and simplicity associated with the behavioral model.