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Browsing School of Engineering by Author "Toukhtarian, Raffi"

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Browsing School of Engineering by Author "Toukhtarian, Raffi"

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  • Computation of a subset of X-parameters using the adjoint method 
    Sidhu, Karanvir S.; Kassis, Marco T.; Toukhtarian, Raffi; Tannir, Dani; Khazaka, Roni (IEEE, 2020-07-24)
    Sidhu, K. S., Kassis, M. T., Toukhtarian, R., Tannir, D., & Khazaka, R. (2018, October). Computation of a subset of x-parameters using the adjoint method. In 2018 IEEE 27th Conference on Electrical Performance of Electronic ...
  • Computation of the X-parameters of multi-tone circuits using multipoint moment expansion 
    Kassis, Marco T.; Tannir, Dani; Toukhtarian, Raffi; Khazaka, Roni (IEEE, 2020-07-23)
    The efficient generation of X-parameter macro-models for nonlinear RF circuit blocks that capture the essential nonlinear behavior of the system has become increasingly useful and even necessary. Recent work on X-parameter ...
  • Computation of x-parameters using multipoint moment expansion 
    Toukhtarian, Raffi; Kassis, Marco T.; Tannir, Dani; Khazaka, Roni (2020-07-17)
    Recently X-parameters 1 have been proposed as an extension to the concept of S-parameters in order to create a macromodel that captures nonlinear behavior. In this paper, we develop a relation between the X-parameters and ...
  • Impact of model-order reduction of a dc motor on control systems: An undergraduate laboratory module 
    Toukhtarian, Raffi; Saab, Samer (2019-08-06)
    The control lab module presented in this paper culminates with a hands-on experience of the basic theory given in an introductory control systems course. This module, whichisplaced during the last two sessions of an under ...
  • Learn while tracking. (c2013) 
    Toukhtarian, Raffi (2013-09-03)
    Controlling a plant and automatically driving its output to track a user-defined reference trajectory with sufficiently small error has been an important problem in control theory and application. This problem is referred ...
  • A MIMO Sampling-Rate-Dependent Controller 
    Saab, Samer S.; Toukhtarian, Raffi (2019-08-02)
    A sampling-rate-dependent (SRD) controller is proposed for the uniform output tracking problem of multiinput multioutput discrete time-varying linear systems. A proportional-integral-derivative (PID) controller is a special ...
  • Moments-based parametric sensitivity analysis of X-parameters 
    Kassis, Marco T.; Tannir, Dani; Toukhtarian, Raffi; Khazaka, Roni (2020-07-17)
    The polyharmonic distortion parameters of a nonlinear structure or circuit block, often referred to as X-parameters (X-parameters is a registered trademark of Agilent Technologies) relate the different harmonics of the ...
  • Moments-based sensitivity analysis of X-parameters with respect to linear and nonlinear circuit components 
    Kassis, Marco T.; Tannir, Dani; Toukhtarian, Raffi; Khazaka, Roni (IEEE, 2020-07-23)
    The X-parameters of a nonlinear structure or circuit block relate the different harmonics of the incident power waves to the reflected ones in the frequency domain. Recently, a moments based approach for the computation ...
  • On the model order reduction of a direct current motor 
    Toukhtarian, Raffi; Sanjab, Anibal; Saab, Samer S. (2019-08-02)
    Neglecting the armature inductance, La, is a common approach for model order reduction for a class of brush DC motors. Some authors, however, make a partial or incomplete interpretation for neglecting La, leading students ...
  • Sensitivity analysis of X-parameters using the harmonic balance derivative first moment 
    Kassis, Marco T.; Toukhtarian, Raffi; Tannir, Dani; Khazaka, Roni (IEEE, 2020-07-23)
    Sensitivity analysis is an important part of the design process and facilitates critical steps such as optimization, design centering and yield analysis. X-parameters are a recently proposed modeling and design tool for ...
  • Simulation based generation of X-parameters using the harmonic balance first moment 
    Toukhtarian, Raffi; Tannir, Dani; Nabki, Frederic; Khazaka, Roni (IEEE, 2020-07-23)
    As the complexity of radio frequency circuits increases, the generation of macromodels for circuit blocks that can be used in system simulations has become increasingly useful and even necessary. Recently X-parameters1 ...

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