A mixed-domain modeling method for RF systems

Abstract

This paper introduces a mixed domain event-driven modeling method for RF systems. The circuit behaviors are modeled in time/frequency domain adaptively combining with the equivalent baseband representation of each spectral component. Comparing to traditional baseband modeling methods or harmonic balance simulation techniques, this mixed domain method loose the requirements of relations among carrier frequencies of spectral components, and therefore can be widely used in mixed-signal circuit modeling. Furthermore, this method brings in a great simulation speed up over the simulation in passband signal abstraction, while the modeling accuracy can be guaranteed to meet the requirements of functional verifications.