This paper presents an original phase-domain analysis of the diffusion process which occurs in oscillators due to small-signal white and colored-noise sources. It is shown that the proposed analysis is able to predict correctly the oscillator's power spectrum also very closely to the fundamental harmonic. The correctness of the analysis is verified through comparisons with commercially available tools.

This work describes an efficient method to estimate and compare the locking range of Injection-Locked-Frequency-Dividers. The method can be exploited during the design phase to explore rapidly how the locking range varies for many possible parameter settings and injection strategies.

This paper presents a hybrid numerical-analytical approach to evaluate and quantify injection pulling effects in RF oscillators. The method employs the Floquet nu1(t) eigenvector to project the perturbation signal into the phase domain. An original closed-form expression for the frequency shift induced by small-signal harmonic perturbations is derived. It is shown that such closed-form expression accurately predicts frequency shift under weak pulling, quasi-lock, as well as locked conditions. An estimation of the main spectrum components of the pulled response is also derived. The proposed macromodeling approach has the peculiarity to be applicable to any oscillator topology.

This paper describes an efficient technique for simulating the huge and mildly-nonlinear thermal networks modeling thermal dynamics in modern integrated systems. The method exploits a special semi-implicit integration technique that allows avoiding the refactorization of Jacobian matrix over a large number of time steps. In the paper a proper implementation of the method is described.

This paper presents a novel time-domain technique for the steady-state analysis of nonlinear oscillators. The method arises from the employment of a high-order implicit RK formula into the context of the Envelope Following technique. The proposed method is very accurate and efficient and exhibits the key peculiarity to be applicable also to harsh-nonlinear oscillator topologies.

A novel approach is proposed for generating parametric compact models of passive linear electrical networks. The resulting method removes the main drawbacks of previous techniques

This paper addresses the accurate time-domain simulation of closed-loop switched circuits. It is known that for such systems, conventional analog simulation can be critical due to the presence of strongly nonlinear switching devices. In order to overcome the drawback, in this paper, an in-depth investigation of the weakness points of analog simulation is first presented. On the basis of the achieved understanding, a novel accurate and efficient simulation technique that combines conventional analog simulation with a suited event-driven management of internally controlled commutations is presented. The proposed method employs a novel algorithm for locating commutation time instants and a regionwise evaluation of critical switching devices. The method is general and can be easily inserted into analog simulator tools

Computer simulation of periodically switched power circuits is an important step of the design; however it is an heavy task that takes a lot of cpu time. This paper presents an algorithm that reduces the cpu time required and improves simulation efficiency.