TITLE

Langevin approach to noise modelling of bipolar microwave transistors

AUTHOR(S)
Patti, F.; Miceli, V.; Spagnolo, B.
PUB. DATE
April 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 513 Issue 1, p198
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present a new approach to study the complete stochastic properties of fluctuations of the output current of microwave transistors. We obtain the π-hybrid model of bipolar microwave transistors with the noise internal sources starting from experimental on-wafer measurements of the scattering and noise parameters. We derive the stochastic differential equations of the Giacoletto model for different loads and source admittances. We give the analytical temporal behavior of the second moment of the output current, assuming particular given correlation functions between the internal noise sources. © 2000 American Institute of Physics.
ACCESSION #
6028454

 

Related Articles

  • Fluctuation-Response Relation and modeling in systems with fast and slow dynamics. Lacorata, G.; Vulpiani, A. // Nonlinear Processes in Geophysics;2007, Vol. 14 Issue 5, p681 

    We show how a general formulation of the Fluctuation-Response Relation is able to describe in detail the connection between response properties to external perturbations and spontaneous fluctuations in systems with fast and slow variables. The method is tested by using the 360-variable Lorenz-96...

  • A stochastic model of torques in von Karman swirling flow. Leprovost, N.; Mari�, L.; Dubrulle, B. // European Physical Journal B -- Condensed Matter;May2004, Vol. 39 Issue 1, p121 

    A stochastic model is derived to predict the turbulent torque produced by a swirling flow. It is a simple Langevin process, with a colored noise. Using the unified colored noise approximation, we derive analytically the PDF of the fluctuations of injected power in two forcing regimes: constant...

  • Extended stochastic description of the new phase formation kinetics. Manankova, A. V. // Journal of Chemical Physics;2/15/1995, Vol. 102 Issue 7, p2928 

    The effect of equilibrium fluctuations of stable variables of state of a new phase nucleus on nucleation kinetics in addition to fluctuations of the unstable variable is reconsidered. For a description of kinetics of the process, we use the stochastic differential equations (the Langevin...

  • Dynamical disorder: Passage through a fluctuating bottleneck. Zwanzig, Robert // Journal of Chemical Physics;9/1/1992, Vol. 97 Issue 5, p3587 

    A model is proposed for a rate process that is controlled by passage through a fluctuating bottleneck. The rate of passage is proportional to the cross-sectional area of the bottleneck. The radius of the bottleneck fluctuates in time according to a Langevin equation with a decay constant λ....

  • Fluctuation theorems and orbital magnetism in nonequilibrium state. Jayannavar, A. M.; Sahoo, Mamata // Pramana: Journal of Physics;Feb2008, Vol. 70 Issue 2, p201 

    We study Langevin dynamics of a driven charged particle in the presence as well as in the absence of magnetic field. We discuss the validity of various work fluctuation theorems using different model potentials and external drives. We also show that one can generate an orbital magnetic moment in...

  • Nonequilibrium Work Theorem for Simple Models with and without Memory. Akimoto, Mitsuhiro; Endo, Kei-ichi // AIP Conference Proceedings;2/21/2008, Vol. 982 Issue 1, p736 

    This study investigates the validity of the nonequilibrium equality called the Jarzynski equality or the work fluctuation theorem for a simple stochastic model of a Brownian particle in a trap harmonic potential. A viscoelastic fluid is adopted as well as a purely viscous fluid for the ambient...

  • Self-oscillations and critical fluctuations. Vaganova, N. I.; Rumanov, É. N. // Journal of Experimental & Theoretical Physics;Feb2009, Vol. 108 Issue 2, p349 

    An active system is analyzed whose parameter space contains a bistable region of stationary states bounded by a cuspidal point. This point is somewhat analogous to the critical point of a non-symmetry-breaking phase transition (in terms of high low-frequency susceptibility, fluctuation growth,...

  • On the bicoherence analysis of plasma turbulence. Itoh, K.; Nagashima, Y.; Itoh, S.-I.; Diamond, P. H.; Fujisawa, A.; Yagi, M.; Fukuyama, A. // Physics of Plasmas;Oct2005, Vol. 12 Issue 10, p102301 

    The bicoherence of fluctuations in a system of drift waves and zonal flows is discussed. In strong drift-wave turbulence, where broadband fluctuations are excited, the bicoherence is examined. A Langevin equation formalism of turbulent interactions allows us to relate the bicoherence coefficient...

  • Langevin approach to hysteresis and Barkhausen jump modeling in steel. McMichael, R. D.; Swartzendruber, L. J.; Bennett, L. H. // Journal of Applied Physics;5/15/1993, Vol. 73 Issue 10, p5848 

    Deals with a study which described the fluctuations in the domain-wall energies, in terms of an ensemble of stochastic Langevin functions, to represent the multiplicity of metastable states in a bulk ferromagnetic materials with domain-wall pinning effects. Experimental and computational...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics