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3CERN 51 Chemin du vieux chene 38240 Meylan, FRANCE CEN/G -BP 85 X F38041 A b s t r a c t : A new technique is presented to simulate noise. Traditionally noise is computed in the AC analysis. W e present here a new noise simulation technique f o r the transient analysis of the circuit. Our approach has been implemented in the electrical circuit simulator ELDO, and is particularly useful f o r noise simulation i n analog sampling circuits such a s CCD image sensors o r switched-capacitor c i r c u i t s . C o m p a r i s o n b e t w e e n s i m u l a t i o n s a n d experimental results has been made and i s shown f o r a 1 . 5~ CMOS Current Mode Amplifier designed f o r high-rate p a r t i c l e detectors.

International audienceA new method termed compressed time is presented to compute the steady-state response of nonlinear circuits with periodic or quasi-periodic excitation. It is different from standard or enhanced shooting method or harmonic balance (HB) and allows the simulation of large systems such as large circuits and large number of harmonics. It is based on a time domain formulation of HB equations written in a preconditioned form. The generated system is then solved with a nonlinear block relaxation algorithm. Performances and simulation results are shown for a typical RF circui

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