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Browsing Articole științifice/Scientific articles by Author "Gál, János"

Browsing Articole științifice/Scientific articles by Author "Gál, János"

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  • Electrically tunable CMOS biquad cells implementation of high-order filters [articol] 
    Câmpeanu, Andrei; Gál, János (Timişoara : Editura Politehnica, 2008)
    This paper presents a new design approach which generates high-order electrically tunable HF ICcompatible filters. The realized circuits are composed only from CMOS linear transconductance elements and grounded capacitors. ...
  • Estimation of chirp signals by extended Kalman filtering [articol] 
    Gál, János; Câmpeanu, Andrei; Naforniţă, Ioan (Timişoara: Editura Politehnica, 2009)
    The paper addresses the problem of estimating the parameters of chirp signals embedded in Gaussian noise. We consider an estimation method based on an approximate linear state space representation of the polynomial ...
  • Estimation of noisy sinusoids instantaneous frequency by Kalman filtering [articol] 
    Gál, János; Câmpeanu, Andrei; Naforniţă, Ioan (Timişoara:Editura Politehnica, 2006)
    The paper adresses the problem of estimating the instantaneous frequency of discrete time sinusoids imbedded in Gaussian noise. The proposed method is based on a model of the signal phase as a polynomial. This approach ...
  • A Kalman filtering algorithm for the estimation of chirp signals in Gaussian noise [articol] 
    Gál, János; Câmpeanu, Andrei; Naforniţă, Ioan (Timişoara : Editura Politehnica, 2007)
    The paper addresses the problem of estimating the parameters of polynomial phase signals (PPS) embedded in Gaussian noise. We consider an estimation method based on an approximate linear state space representation of ...
  • Lowpass active filter synthesis based on mesh current emulation of LC ladder structures [articol] 
    Gál, János; Naforniță, Corina Alda; Câmpeanu, Andrei (Timişoara : Editura Politehnica, 2004)
    In a series of papers, [1]-[3], A. Câmpeanu and M. Naforniţă proposed a new active RC filter synthesis method based on mesh current emulation of LC ladder filter networks. Initially, the method was successfully applied to ...
  • OTA-C biquad cells emulation of LC ladder filters [articol] 
    Câmpeanu, Andrei; Gál, János (Timişoara: Editura Politehnica, 2006)
    The paper presents a method to design continuos-time filter based on the node-voltage simulation of LC ladder structures. The node voltages are used as variables to generate transfer functions. The OTA-C biquad cells are ...
  • Parameter estimation of the chirp signal [articol] 
    Chioncel, Cristian Paul; Gál, János (Timişoara : Editura Politehnica, 2004)
    The paper presents the characteristics of the parameters of the chirp signal, and the situations where this signal intervene. Using Kalman filtering, a few parameters of the chirp signal will be estimated, such as frequency ...

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